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commit 63c022739be1810316e2504f4abeaa4ca144ef46
Author: hubodao <[email protected]>
Date: Tue Jun 8 07:44:36 2021 +0000
numa-aware implementation
diff --git a/hotspot/src/os/bsd/vm/os_bsd.cpp b/hotspot/src/os/bsd/vm/os_bsd.cpp
index 3e4d8c7e6..340334c47 100644
--- a/hotspot/src/os/bsd/vm/os_bsd.cpp
+++ b/hotspot/src/os/bsd/vm/os_bsd.cpp
@@ -2290,6 +2290,10 @@ size_t os::numa_get_leaf_groups(int *ids, size_t size) {
return 0;
}
+int os::numa_get_group_id_for_address(const void* address) {
+ return 0;
+}
+
bool os::get_page_info(char *start, page_info* info) {
return false;
}
diff --git a/hotspot/src/os/linux/vm/os_linux.cpp b/hotspot/src/os/linux/vm/os_linux.cpp
index 621316b99..f700335a3 100644
--- a/hotspot/src/os/linux/vm/os_linux.cpp
+++ b/hotspot/src/os/linux/vm/os_linux.cpp
@@ -2908,6 +2908,19 @@ int os::numa_get_group_id() {
return 0;
}
+int os::numa_get_group_id_for_address(const void* address) {
+ void** pages = const_cast<void**>(&address);
+ int id = -1;
+
+ if (os::Linux::numa_move_pages(0, 1, pages, NULL, &id, 0) == -1) {
+ return -1;
+ }
+ if (id < 0) {
+ return -1;
+ }
+ return id;
+}
+
int os::Linux::get_existing_num_nodes() {
size_t node;
size_t highest_node_number = Linux::numa_max_node();
@@ -2930,7 +2943,7 @@ size_t os::numa_get_leaf_groups(int *ids, size_t size) {
// not always consecutively available, i.e. available from 0 to the highest
// node number.
for (size_t node = 0; node <= highest_node_number; node++) {
- if (Linux::isnode_in_configured_nodes(node)) {
+ if (Linux::isnode_in_bound_nodes(node)) {
ids[i++] = node;
}
}
@@ -3023,11 +3036,21 @@ bool os::Linux::libnuma_init() {
libnuma_dlsym(handle, "numa_bitmask_isbitset")));
set_numa_distance(CAST_TO_FN_PTR(numa_distance_func_t,
libnuma_dlsym(handle, "numa_distance")));
+ set_numa_get_membind(CAST_TO_FN_PTR(numa_get_membind_func_t,
+ libnuma_v2_dlsym(handle, "numa_get_membind")));
+ set_numa_get_interleave_mask(CAST_TO_FN_PTR(numa_get_interleave_mask_func_t,
+ libnuma_v2_dlsym(handle, "numa_get_interleave_mask")));
+ set_numa_move_pages(CAST_TO_FN_PTR(numa_move_pages_func_t,
+ libnuma_dlsym(handle, "numa_move_pages")));
+ set_numa_run_on_node(CAST_TO_FN_PTR(numa_run_on_node_func_t,
+ libnuma_dlsym(handle, "numa_run_on_node")));
if (numa_available() != -1) {
set_numa_all_nodes((unsigned long*)libnuma_dlsym(handle, "numa_all_nodes"));
set_numa_all_nodes_ptr((struct bitmask **)libnuma_dlsym(handle, "numa_all_nodes_ptr"));
set_numa_nodes_ptr((struct bitmask **)libnuma_dlsym(handle, "numa_nodes_ptr"));
+ set_numa_interleave_bitmask(_numa_get_interleave_mask());
+ set_numa_membind_bitmask(_numa_get_membind());
// Create an index -> node mapping, since nodes are not always consecutive
_nindex_to_node = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<int>(0, true);
rebuild_nindex_to_node_map();
@@ -3081,12 +3104,15 @@ void os::Linux::rebuild_cpu_to_node_map() {
for (size_t i = 0; i < node_num; i++) {
// Check if node is configured (not a memory-less node). If it is not, find
// the closest configured node.
- if (!isnode_in_configured_nodes(nindex_to_node()->at(i))) {
+ if (!isnode_in_configured_nodes(nindex_to_node()->at(i)) ||
+ !isnode_in_bound_nodes(nindex_to_node()->at(i))) {
closest_distance = INT_MAX;
// Check distance from all remaining nodes in the system. Ignore distance
// from itself and from another non-configured node.
for (size_t m = 0; m < node_num; m++) {
- if (m != i && isnode_in_configured_nodes(nindex_to_node()->at(m))) {
+ if (m != i &&
+ isnode_in_configured_nodes(nindex_to_node()->at(m)) &&
+ isnode_in_bound_nodes(nindex_to_node()->at(m))) {
distance = numa_distance(nindex_to_node()->at(i), nindex_to_node()->at(m));
// If a closest node is found, update. There is always at least one
// configured node in the system so there is always at least one node
@@ -3140,9 +3166,16 @@ os::Linux::numa_interleave_memory_v2_func_t os::Linux::_numa_interleave_memory_v
os::Linux::numa_set_bind_policy_func_t os::Linux::_numa_set_bind_policy;
os::Linux::numa_bitmask_isbitset_func_t os::Linux::_numa_bitmask_isbitset;
os::Linux::numa_distance_func_t os::Linux::_numa_distance;
+os::Linux::numa_get_membind_func_t os::Linux::_numa_get_membind;
+os::Linux::numa_get_interleave_mask_func_t os::Linux::_numa_get_interleave_mask;
+os::Linux::numa_move_pages_func_t os::Linux::_numa_move_pages;
+os::Linux::numa_run_on_node_func_t os::Linux::_numa_run_on_node;
+os::Linux::NumaAllocationPolicy os::Linux::_current_numa_policy;
unsigned long* os::Linux::_numa_all_nodes;
struct bitmask* os::Linux::_numa_all_nodes_ptr;
struct bitmask* os::Linux::_numa_nodes_ptr;
+struct bitmask* os::Linux::_numa_interleave_bitmask;
+struct bitmask* os::Linux::_numa_membind_bitmask;
bool os::pd_uncommit_memory(char* addr, size_t size) {
uintptr_t res = (uintptr_t) ::mmap(addr, size, PROT_NONE,
@@ -5195,9 +5228,11 @@ jint os::init_2(void)
if (!Linux::libnuma_init()) {
UseNUMA = false;
} else {
- if ((Linux::numa_max_node() < 1)) {
+ if ((Linux::numa_max_node() < 1) || Linux::isbound_to_single_node()) {
// There's only one node(they start from 0), disable NUMA.
UseNUMA = false;
+ } else {
+ Linux::set_configured_numa_policy(Linux::identify_numa_policy());
}
}
// With SHM and HugeTLBFS large pages we cannot uncommit a page, so there's no way
diff --git a/hotspot/src/os/linux/vm/os_linux.hpp b/hotspot/src/os/linux/vm/os_linux.hpp
index 79a9f39ab..c6748824e 100644
--- a/hotspot/src/os/linux/vm/os_linux.hpp
+++ b/hotspot/src/os/linux/vm/os_linux.hpp
@@ -260,6 +260,10 @@ private:
typedef int (*numa_tonode_memory_func_t)(void *start, size_t size, int node);
typedef void (*numa_interleave_memory_func_t)(void *start, size_t size, unsigned long *nodemask);
typedef void (*numa_interleave_memory_v2_func_t)(void *start, size_t size, struct bitmask* mask);
+ typedef struct bitmask* (*numa_get_membind_func_t)(void);
+ typedef struct bitmask* (*numa_get_interleave_mask_func_t)(void);
+ typedef long (*numa_move_pages_func_t)(int pid, unsigned long count, void **pages, const int *nodes, int *status, int flags);
+ typedef int (*numa_run_on_node_func_t)(int node);
typedef void (*numa_set_bind_policy_func_t)(int policy);
typedef int (*numa_bitmask_isbitset_func_t)(struct bitmask *bmp, unsigned int n);
@@ -276,9 +280,16 @@ private:
static numa_set_bind_policy_func_t _numa_set_bind_policy;
static numa_bitmask_isbitset_func_t _numa_bitmask_isbitset;
static numa_distance_func_t _numa_distance;
+ static numa_get_membind_func_t _numa_get_membind;
+ static numa_get_interleave_mask_func_t _numa_get_interleave_mask;
+ static numa_move_pages_func_t _numa_move_pages;
+ static numa_run_on_node_func_t _numa_run_on_node;
+
static unsigned long* _numa_all_nodes;
static struct bitmask* _numa_all_nodes_ptr;
static struct bitmask* _numa_nodes_ptr;
+ static struct bitmask* _numa_interleave_bitmask;
+ static struct bitmask* _numa_membind_bitmask;
static void set_sched_getcpu(sched_getcpu_func_t func) { _sched_getcpu = func; }
static void set_numa_node_to_cpus(numa_node_to_cpus_func_t func) { _numa_node_to_cpus = func; }
@@ -291,10 +302,24 @@ private:
static void set_numa_set_bind_policy(numa_set_bind_policy_func_t func) { _numa_set_bind_policy = func; }
static void set_numa_bitmask_isbitset(numa_bitmask_isbitset_func_t func) { _numa_bitmask_isbitset = func; }
static void set_numa_distance(numa_distance_func_t func) { _numa_distance = func; }
+ static void set_numa_get_membind(numa_get_membind_func_t func) { _numa_get_membind = func; }
+ static void set_numa_get_interleave_mask(numa_get_interleave_mask_func_t func) { _numa_get_interleave_mask = func; }
+ static void set_numa_move_pages(numa_move_pages_func_t func) { _numa_move_pages = func; }
+ static void set_numa_run_on_node(numa_run_on_node_func_t func) { _numa_run_on_node = func; }
static void set_numa_all_nodes(unsigned long* ptr) { _numa_all_nodes = ptr; }
static void set_numa_all_nodes_ptr(struct bitmask **ptr) { _numa_all_nodes_ptr = (ptr == NULL ? NULL : *ptr); }
static void set_numa_nodes_ptr(struct bitmask **ptr) { _numa_nodes_ptr = (ptr == NULL ? NULL : *ptr); }
+ static void set_numa_interleave_bitmask(struct bitmask* ptr) { _numa_interleave_bitmask = ptr ; }
+ static void set_numa_membind_bitmask(struct bitmask* ptr) { _numa_membind_bitmask = ptr ; }
static int sched_getcpu_syscall(void);
+
+ enum NumaAllocationPolicy{
+ NotInitialized,
+ Membind,
+ Interleave
+ };
+ static NumaAllocationPolicy _current_numa_policy;
+
public:
static int sched_getcpu() { return _sched_getcpu != NULL ? _sched_getcpu() : -1; }
static int numa_node_to_cpus(int node, unsigned long *buffer, int bufferlen) {
@@ -308,6 +333,20 @@ public:
static int numa_tonode_memory(void *start, size_t size, int node) {
return _numa_tonode_memory != NULL ? _numa_tonode_memory(start, size, node) : -1;
}
+
+ static void set_configured_numa_policy(NumaAllocationPolicy numa_policy) {
+ _current_numa_policy = numa_policy;
+ }
+
+ static NumaAllocationPolicy identify_numa_policy() {
+ for (int node = 0; node <= Linux::numa_max_node(); node++) {
+ if (Linux::_numa_bitmask_isbitset(Linux::_numa_interleave_bitmask, node)) {
+ return Interleave;
+ }
+ }
+ return Membind;
+ }
+
static void numa_interleave_memory(void *start, size_t size) {
// Use v2 api if available
if (_numa_interleave_memory_v2 != NULL && _numa_all_nodes_ptr != NULL) {
@@ -324,6 +363,14 @@ public:
static int numa_distance(int node1, int node2) {
return _numa_distance != NULL ? _numa_distance(node1, node2) : -1;
}
+ static int numa_run_on_node(int node) {
+ return _numa_run_on_node != NULL ? _numa_run_on_node(node) : -1;
+ }
+
+ static long numa_move_pages(int pid, unsigned long count, void **pages, const int *nodes, int *status, int flags) {
+ return _numa_move_pages != NULL ? _numa_move_pages(pid, count, pages, nodes, status, flags) : -1;
+ }
+
static int get_node_by_cpu(int cpu_id);
static int get_existing_num_nodes();
// Check if numa node is configured (non-zero memory node).
@@ -352,6 +399,39 @@ public:
} else
return 0;
}
+ // Check if node is in bound node set.
+ static bool isnode_in_bound_nodes(int node) {
+ if (_numa_membind_bitmask != NULL && _numa_bitmask_isbitset != NULL) {
+ return _numa_bitmask_isbitset(_numa_membind_bitmask, node);
+ } else {
+ return false;
+ }
+ }
+ // Check if bound to only one numa node.
+ // Returns true if bound to a single numa node, otherwise returns false.
+ static bool isbound_to_single_node() {
+ int nodes = 0;
+ unsigned int node = 0;
+ unsigned int highest_node_number = 0;
+
+ if (_numa_membind_bitmask != NULL && _numa_max_node != NULL && _numa_bitmask_isbitset != NULL) {
+ highest_node_number = _numa_max_node();
+ } else {
+ return false;
+ }
+
+ for (node = 0; node <= highest_node_number; node++) {
+ if (_numa_bitmask_isbitset(_numa_membind_bitmask, node)) {
+ nodes++;
+ }
+ }
+
+ if (nodes == 1) {
+ return true;
+ } else {
+ return false;
+ }
+ }
};
diff --git a/hotspot/src/os/solaris/vm/os_solaris.cpp b/hotspot/src/os/solaris/vm/os_solaris.cpp
index 732538434..d995f51e3 100644
--- a/hotspot/src/os/solaris/vm/os_solaris.cpp
+++ b/hotspot/src/os/solaris/vm/os_solaris.cpp
@@ -2788,6 +2788,10 @@ int os::numa_get_group_id() {
return ids[os::random() % r];
}
+int os::numa_get_group_id_for_address(const void* address) {
+ return 0;
+}
+
// Request information about the page.
bool os::get_page_info(char *start, page_info* info) {
const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE };
diff --git a/hotspot/src/os/windows/vm/os_windows.cpp b/hotspot/src/os/windows/vm/os_windows.cpp
index e7ff202af..39f5410d1 100644
--- a/hotspot/src/os/windows/vm/os_windows.cpp
+++ b/hotspot/src/os/windows/vm/os_windows.cpp
@@ -3532,6 +3532,10 @@ size_t os::numa_get_leaf_groups(int *ids, size_t size) {
}
}
+int os::numa_get_group_id_for_address(const void* address) {
+ return 0;
+}
+
bool os::get_page_info(char *start, page_info* info) {
return false;
}
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1AllocRegion.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1AllocRegion.cpp
index f92ae1102..0f9bc3f81 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1AllocRegion.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1AllocRegion.cpp
@@ -235,15 +235,16 @@ void G1AllocRegion::trace(const char* str, size_t word_size, HeapWord* result) {
#endif // G1_ALLOC_REGION_TRACING
G1AllocRegion::G1AllocRegion(const char* name,
- bool bot_updates)
- : _name(name), _bot_updates(bot_updates),
+ bool bot_updates,
+ uint node_index)
+ : _name(name), _bot_updates(bot_updates), _node_index(node_index),
_alloc_region(NULL), _count(0), _used_bytes_before(0),
_allocation_context(AllocationContext::system()) { }
HeapRegion* MutatorAllocRegion::allocate_new_region(size_t word_size,
bool force) {
- return _g1h->new_mutator_alloc_region(word_size, force);
+ return _g1h->new_mutator_alloc_region(word_size, force, _node_index);
}
void MutatorAllocRegion::retire_region(HeapRegion* alloc_region,
@@ -254,7 +255,7 @@ void MutatorAllocRegion::retire_region(HeapRegion* alloc_region,
HeapRegion* SurvivorGCAllocRegion::allocate_new_region(size_t word_size,
bool force) {
assert(!force, "not supported for GC alloc regions");
- return _g1h->new_gc_alloc_region(word_size, count(), InCSetState::Young);
+ return _g1h->new_gc_alloc_region(word_size, count(), InCSetState::Young, _node_index);
}
void SurvivorGCAllocRegion::retire_region(HeapRegion* alloc_region,
@@ -265,7 +266,7 @@ void SurvivorGCAllocRegion::retire_region(HeapRegion* alloc_region,
HeapRegion* OldGCAllocRegion::allocate_new_region(size_t word_size,
bool force) {
assert(!force, "not supported for GC alloc regions");
- return _g1h->new_gc_alloc_region(word_size, count(), InCSetState::Old);
+ return _g1h->new_gc_alloc_region(word_size, count(), InCSetState::Old, _node_index);
}
void OldGCAllocRegion::retire_region(HeapRegion* alloc_region,
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1AllocRegion.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1AllocRegion.hpp
index 2edc6545c..bc1c65d5a 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1AllocRegion.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1AllocRegion.hpp
@@ -26,6 +26,7 @@
#define SHARE_VM_GC_IMPLEMENTATION_G1_G1ALLOCREGION_HPP
#include "gc_implementation/g1/heapRegion.hpp"
+#include "gc_implementation/g1/g1NUMA.hpp"
class G1CollectedHeap;
@@ -133,7 +134,9 @@ protected:
virtual void retire_region(HeapRegion* alloc_region,
size_t allocated_bytes) = 0;
- G1AllocRegion(const char* name, bool bot_updates);
+ G1AllocRegion(const char* name, bool bot_updates, uint node_index);
+ // The memory node index this allocation region belongs to.
+ uint _node_index;
public:
static void setup(G1CollectedHeap* g1h, HeapRegion* dummy_region);
@@ -197,8 +200,8 @@ protected:
virtual HeapRegion* allocate_new_region(size_t word_size, bool force);
virtual void retire_region(HeapRegion* alloc_region, size_t allocated_bytes);
public:
- MutatorAllocRegion()
- : G1AllocRegion("Mutator Alloc Region", false /* bot_updates */) { }
+ MutatorAllocRegion(uint node_index)
+ : G1AllocRegion("Mutator Alloc Region", false /* bot_updates */, node_index) { }
};
class SurvivorGCAllocRegion : public G1AllocRegion {
@@ -206,8 +209,8 @@ protected:
virtual HeapRegion* allocate_new_region(size_t word_size, bool force);
virtual void retire_region(HeapRegion* alloc_region, size_t allocated_bytes);
public:
- SurvivorGCAllocRegion()
- : G1AllocRegion("Survivor GC Alloc Region", false /* bot_updates */) { }
+ SurvivorGCAllocRegion(uint node_index)
+ : G1AllocRegion("Survivor GC Alloc Region", false /* bot_updates */, node_index) { }
};
class OldGCAllocRegion : public G1AllocRegion {
@@ -216,7 +219,7 @@ protected:
virtual void retire_region(HeapRegion* alloc_region, size_t allocated_bytes);
public:
OldGCAllocRegion()
- : G1AllocRegion("Old GC Alloc Region", true /* bot_updates */) { }
+ : G1AllocRegion("Old GC Alloc Region", true /* bot_updates */, G1NUMA::AnyNodeIndex) { }
// This specialization of release() makes sure that the last card that has
// been allocated into has been completely filled by a dummy object. This
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1Allocator.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1Allocator.cpp
index 0d1ab8411..f6fb2cdee 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1Allocator.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1Allocator.cpp
@@ -26,19 +26,73 @@
#include "gc_implementation/g1/g1Allocator.hpp"
#include "gc_implementation/g1/g1CollectedHeap.hpp"
#include "gc_implementation/g1/g1CollectorPolicy.hpp"
+#include "gc_implementation/g1/g1NUMA.hpp"
#include "gc_implementation/g1/heapRegion.inline.hpp"
#include "gc_implementation/g1/heapRegionSet.inline.hpp"
-void G1DefaultAllocator::init_mutator_alloc_region() {
- assert(_mutator_alloc_region.get() == NULL, "pre-condition");
- _mutator_alloc_region.init();
+void G1DefaultAllocator::init_mutator_alloc_regions() {
+ for (uint i = 0; i < _num_alloc_regions; i++) {
+ assert(mutator_alloc_region(i)->get() == NULL, "pre-condition");
+ mutator_alloc_region(i)->init();
+ }
+}
+
+void G1DefaultAllocator::release_mutator_alloc_regions() {
+ for (uint i = 0; i < _num_alloc_regions; i++) {
+ mutator_alloc_region(i)->release();
+ assert(mutator_alloc_region(i)->get() == NULL, "post-condition");
+ }
+}
+
+inline HeapWord* G1DefaultAllocator::attempt_allocation_locked(size_t word_size, bool bot_updates, uint &node_index) {
+ node_index = current_node_index();
+ HeapWord* result = mutator_alloc_region(node_index)->attempt_allocation_locked(word_size, bot_updates);
+ assert(result != NULL || mutator_alloc_region(node_index)->get() == NULL,
+ err_msg("Must not have a mutator alloc region if there is no memory, but is " PTR_FORMAT, p2i(mutator_alloc_region(node_index)->get())));
+ return result;
+}
+
+inline HeapWord* G1DefaultAllocator::attempt_allocation_force(size_t word_size, bool bot_updates, uint node_index) {
+ if (node_index == G1NUMA::AnyNodeIndex) {
+ return NULL;
+ }
+ assert(node_index < _num_alloc_regions, err_msg("Invalid index: %u", node_index));
+ return mutator_alloc_region(node_index)->attempt_allocation_force(word_size, bot_updates);
}
-void G1DefaultAllocator::release_mutator_alloc_region() {
- _mutator_alloc_region.release();
- assert(_mutator_alloc_region.get() == NULL, "post-condition");
+G1DefaultAllocator::G1DefaultAllocator(G1CollectedHeap* heap) :
+ G1Allocator(heap),
+ _numa(heap->numa()),
+ _num_alloc_regions(_numa->num_active_nodes()),
+ _mutator_alloc_regions(NULL),
+ _survivor_gc_alloc_regions(NULL),
+ _old_gc_alloc_region(),
+ _retained_old_gc_alloc_region(NULL) {
+
+ _mutator_alloc_regions = NEW_C_HEAP_ARRAY(MutatorAllocRegion, _num_alloc_regions, mtGC);
+ _survivor_gc_alloc_regions = NEW_C_HEAP_ARRAY(SurvivorGCAllocRegion, _num_alloc_regions, mtGC);
+ for (uint i = 0; i < _num_alloc_regions; i++) {
+ ::new(_mutator_alloc_regions + i) MutatorAllocRegion(i);
+ ::new(_survivor_gc_alloc_regions + i) SurvivorGCAllocRegion(i);
+ }
}
+G1DefaultAllocator::~G1DefaultAllocator() {
+ for (uint i = 0; i < _num_alloc_regions; i++) {
+ _mutator_alloc_regions[i].~MutatorAllocRegion();
+ _survivor_gc_alloc_regions[i].~SurvivorGCAllocRegion();
+ }
+ FREE_C_HEAP_ARRAY(MutatorAllocRegion, _mutator_alloc_regions, mtGC);
+ FREE_C_HEAP_ARRAY(SurvivorGCAllocRegion, _survivor_gc_alloc_regions, mtGC);
+}
+
+#ifdef ASSERT
+bool G1Allocator::has_mutator_alloc_region() {
+ uint node_index = current_node_index();
+ return mutator_alloc_region(node_index)->get() != NULL;
+}
+#endif
+
void G1Allocator::reuse_retained_old_region(EvacuationInfo& evacuation_info,
OldGCAllocRegion* old,
HeapRegion** retained_old) {
@@ -76,7 +130,9 @@ void G1Allocator::reuse_retained_old_region(EvacuationInfo& evacuation_info,
void G1DefaultAllocator::init_gc_alloc_regions(EvacuationInfo& evacuation_info) {
assert_at_safepoint(true /* should_be_vm_thread */);
- _survivor_gc_alloc_region.init();
+ for (uint i = 0; i < _num_alloc_regions; i++) {
+ survivor_gc_alloc_region(i)->init();
+ }
_old_gc_alloc_region.init();
reuse_retained_old_region(evacuation_info,
&_old_gc_alloc_region,
@@ -85,9 +141,13 @@ void G1DefaultAllocator::init_gc_alloc_regions(EvacuationInfo& evacuation_info)
void G1DefaultAllocator::release_gc_alloc_regions(uint no_of_gc_workers, EvacuationInfo& evacuation_info) {
AllocationContext_t context = AllocationContext::current();
- evacuation_info.set_allocation_regions(survivor_gc_alloc_region(context)->count() +
+ uint survivor_region_count = 0;
+ for (uint node_index = 0; node_index < _num_alloc_regions; node_index++) {
+ survivor_region_count += survivor_gc_alloc_region(node_index)->count();
+ survivor_gc_alloc_region(node_index)->release();
+ }
+ evacuation_info.set_allocation_regions(survivor_region_count +
old_gc_alloc_region(context)->count());
- survivor_gc_alloc_region(context)->release();
// If we have an old GC alloc region to release, we'll save it in
// _retained_old_gc_alloc_region. If we don't
// _retained_old_gc_alloc_region will become NULL. This is what we
@@ -105,7 +165,9 @@ void G1DefaultAllocator::release_gc_alloc_regions(uint no_of_gc_workers, Evacuat
}
void G1DefaultAllocator::abandon_gc_alloc_regions() {
- assert(survivor_gc_alloc_region(AllocationContext::current())->get() == NULL, "pre-condition");
+ for (uint i = 0; i < _num_alloc_regions; i++) {
+ assert(survivor_gc_alloc_region(i)->get() == NULL, "pre-condition");
+ }
assert(old_gc_alloc_region(AllocationContext::current())->get() == NULL, "pre-condition");
_retained_old_gc_alloc_region = NULL;
}
@@ -113,16 +175,24 @@ void G1DefaultAllocator::abandon_gc_alloc_regions() {
G1ParGCAllocBuffer::G1ParGCAllocBuffer(size_t gclab_word_size) :
ParGCAllocBuffer(gclab_word_size), _retired(true) { }
+G1ParGCAllocator::G1ParGCAllocator(G1CollectedHeap* g1h) :
+ _g1h(g1h), _survivor_alignment_bytes(calc_survivor_alignment_bytes()),
+ _numa(g1h->numa()),
+ _num_alloc_regions(_numa->num_active_nodes()),
+ _alloc_buffer_waste(0), _undo_waste(0) {
+}
+
HeapWord* G1ParGCAllocator::allocate_direct_or_new_plab(InCSetState dest,
size_t word_sz,
- AllocationContext_t context) {
+ AllocationContext_t context,
+ uint node_index) {
size_t gclab_word_size = _g1h->desired_plab_sz(dest);
if (word_sz * 100 < gclab_word_size * ParallelGCBufferWastePct) {
- G1ParGCAllocBuffer* alloc_buf = alloc_buffer(dest, context);
+ G1ParGCAllocBuffer* alloc_buf = alloc_buffer(dest, context, node_index);
add_to_alloc_buffer_waste(alloc_buf->words_remaining());
alloc_buf->retire(false /* end_of_gc */, false /* retain */);
- HeapWord* buf = _g1h->par_allocate_during_gc(dest, gclab_word_size, context);
+ HeapWord* buf = _g1h->par_allocate_during_gc(dest, gclab_word_size, context, node_index);
if (buf == NULL) {
return NULL; // Let caller handle allocation failure.
}
@@ -134,29 +204,47 @@ HeapWord* G1ParGCAllocator::allocate_direct_or_new_plab(InCSetState dest,
assert(obj != NULL, "buffer was definitely big enough...");
return obj;
} else {
- return _g1h->par_allocate_during_gc(dest, word_sz, context);
+ return _g1h->par_allocate_during_gc(dest, word_sz, context, node_index);
}
}
G1DefaultParGCAllocator::G1DefaultParGCAllocator(G1CollectedHeap* g1h) :
- G1ParGCAllocator(g1h),
- _surviving_alloc_buffer(g1h->desired_plab_sz(InCSetState::Young)),
- _tenured_alloc_buffer(g1h->desired_plab_sz(InCSetState::Old)) {
+ G1ParGCAllocator(g1h) {
for (uint state = 0; state < InCSetState::Num; state++) {
_alloc_buffers[state] = NULL;
+ uint length = alloc_buffers_length(state);
+ _alloc_buffers[state] = NEW_C_HEAP_ARRAY(G1ParGCAllocBuffer*, length, mtGC);
+ for (uint node_index = 0; node_index < length; node_index++) {
+ _alloc_buffers[state][node_index] = new G1ParGCAllocBuffer(_g1h->desired_plab_sz(state));
+ }
+ }
+}
+
+G1DefaultParGCAllocator::~G1DefaultParGCAllocator() {
+ for (in_cset_state_t state = 0; state < InCSetState::Num; state++) {
+ uint length = alloc_buffers_length(state);
+ for (uint node_index = 0; node_index < length; node_index++) {
+ delete _alloc_buffers[state][node_index];
+ }
+ FREE_C_HEAP_ARRAY(G1ParGCAllocBuffer*, _alloc_buffers[state], mtGC);
}
- _alloc_buffers[InCSetState::Young] = &_surviving_alloc_buffer;
- _alloc_buffers[InCSetState::Old] = &_tenured_alloc_buffer;
}
void G1DefaultParGCAllocator::retire_alloc_buffers() {
for (uint state = 0; state < InCSetState::Num; state++) {
- G1ParGCAllocBuffer* const buf = _alloc_buffers[state];
- if (buf != NULL) {
- add_to_alloc_buffer_waste(buf->words_remaining());
- buf->flush_stats_and_retire(_g1h->alloc_buffer_stats(state),
+ uint length = alloc_buffers_length(state);
+ for (uint node_index = 0; node_index < length; node_index++) {
+ G1ParGCAllocBuffer* const buf = _alloc_buffers[state][node_index];
+ if (buf != NULL) {
+ add_to_alloc_buffer_waste(buf->words_remaining());
+ buf->flush_stats_and_retire(_g1h->alloc_buffer_stats(state),
true /* end_of_gc */,
false /* retain */);
+ }
}
}
}
+
+uint G1DefaultAllocator::current_node_index() const {
+ return _numa->index_of_current_thread();
+}
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1Allocator.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1Allocator.hpp
index 04628b7de..9b26168a8 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1Allocator.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1Allocator.hpp
@@ -30,6 +30,8 @@
#include "gc_implementation/g1/g1InCSetState.hpp"
#include "gc_implementation/shared/parGCAllocBuffer.hpp"
+class G1NUMA;
+
// Base class for G1 allocators.
class G1Allocator : public CHeapObj<mtGC> {
friend class VMStructs;
@@ -44,17 +46,27 @@ public:
G1Allocator(G1CollectedHeap* heap) :
_g1h(heap), _summary_bytes_used(0) { }
+ // Node index of current thread.
+ virtual uint current_node_index() const = 0;
+
static G1Allocator* create_allocator(G1CollectedHeap* g1h);
- virtual void init_mutator_alloc_region() = 0;
- virtual void release_mutator_alloc_region() = 0;
+ virtual void init_mutator_alloc_regions() = 0;
+ virtual void release_mutator_alloc_regions() = 0;
virtual void init_gc_alloc_regions(EvacuationInfo& evacuation_info) = 0;
virtual void release_gc_alloc_regions(uint no_of_gc_workers, EvacuationInfo& evacuation_info) = 0;
virtual void abandon_gc_alloc_regions() = 0;
- virtual MutatorAllocRegion* mutator_alloc_region(AllocationContext_t context) = 0;
- virtual SurvivorGCAllocRegion* survivor_gc_alloc_region(AllocationContext_t context) = 0;
+#ifdef ASSERT
+ // Do we currently have an active mutator region to allocate into?
+ bool has_mutator_alloc_region();
+#endif
+
+ virtual MutatorAllocRegion* mutator_alloc_region(uint node_index) = 0;
+ virtual SurvivorGCAllocRegion* survivor_gc_alloc_region(uint node_index) = 0;
+ virtual MutatorAllocRegion* mutator_alloc_region() = 0;
+ virtual SurvivorGCAllocRegion* survivor_gc_alloc_region() = 0;
virtual OldGCAllocRegion* old_gc_alloc_region(AllocationContext_t context) = 0;
virtual size_t used() = 0;
virtual bool is_retained_old_region(HeapRegion* hr) = 0;
@@ -63,6 +75,9 @@ public:
OldGCAllocRegion* old,
HeapRegion** retained);
+ virtual HeapWord* attempt_allocation_locked(size_t word_size, bool bot_updates, uint &node) = 0;
+ virtual HeapWord* attempt_allocation_force(size_t word_size, bool bot_updates, uint node = G1NUMA::AnyNodeIndex) = 0;
+
size_t used_unlocked() const {
return _summary_bytes_used;
}
@@ -93,37 +108,58 @@ public:
class G1DefaultAllocator : public G1Allocator {
protected:
// Alloc region used to satisfy mutator allocation requests.
- MutatorAllocRegion _mutator_alloc_region;
+ MutatorAllocRegion* _mutator_alloc_regions;
// Alloc region used to satisfy allocation requests by the GC for
// survivor objects.
- SurvivorGCAllocRegion _survivor_gc_alloc_region;
+ SurvivorGCAllocRegion* _survivor_gc_alloc_regions;
// Alloc region used to satisfy allocation requests by the GC for
// old objects.
OldGCAllocRegion _old_gc_alloc_region;
HeapRegion* _retained_old_gc_alloc_region;
+
+ G1NUMA* _numa;
+ // The number of MutatorAllocRegions used, one per memory node.
+ size_t _num_alloc_regions;
+
public:
- G1DefaultAllocator(G1CollectedHeap* heap) : G1Allocator(heap), _retained_old_gc_alloc_region(NULL) { }
+ G1DefaultAllocator(G1CollectedHeap* heap);
+ ~G1DefaultAllocator();
- virtual void init_mutator_alloc_region();
- virtual void release_mutator_alloc_region();
+ uint current_node_index() const;
+ uint num_nodes() { return (uint)_num_alloc_regions; }
+
+ virtual void init_mutator_alloc_regions();
+ virtual void release_mutator_alloc_regions();
virtual void init_gc_alloc_regions(EvacuationInfo& evacuation_info);
virtual void release_gc_alloc_regions(uint no_of_gc_workers, EvacuationInfo& evacuation_info);
virtual void abandon_gc_alloc_regions();
+ virtual HeapWord* attempt_allocation_locked(size_t word_size, bool bot_updates, uint &node);
+ virtual HeapWord* attempt_allocation_force(size_t word_size, bool bot_updates, uint node = G1NUMA::AnyNodeIndex);
virtual bool is_retained_old_region(HeapRegion* hr) {
return _retained_old_gc_alloc_region == hr;
}
- virtual MutatorAllocRegion* mutator_alloc_region(AllocationContext_t context) {
- return &_mutator_alloc_region;
+ virtual MutatorAllocRegion* mutator_alloc_region() {
+ return &_mutator_alloc_regions[current_node_index()];
+ }
+
+ virtual SurvivorGCAllocRegion* survivor_gc_alloc_region() {
+ return &_survivor_gc_alloc_regions[current_node_index()];
}
- virtual SurvivorGCAllocRegion* survivor_gc_alloc_region(AllocationContext_t context) {
- return &_survivor_gc_alloc_region;
+ virtual MutatorAllocRegion* mutator_alloc_region(uint node_index) {
+ assert(node_index < _num_alloc_regions, err_msg("Invalid index: %u", node_index));
+ return &_mutator_alloc_regions[node_index];
+ }
+
+ virtual SurvivorGCAllocRegion* survivor_gc_alloc_region(uint node_index) {
+ assert(node_index < _num_alloc_regions, err_msg("Invalid index: %u", node_index));
+ return &_survivor_gc_alloc_regions[node_index];
}
virtual OldGCAllocRegion* old_gc_alloc_region(AllocationContext_t context) {
@@ -136,9 +172,11 @@ public:
size_t result = _summary_bytes_used;
// Read only once in case it is set to NULL concurrently
- HeapRegion* hr = mutator_alloc_region(AllocationContext::current())->get();
- if (hr != NULL) {
- result += hr->used();
+ for (uint i = 0; i < _num_alloc_regions; i++) {
+ HeapRegion* hr = mutator_alloc_region(i)->get();
+ if (hr != NULL) {
+ result += hr->used();
+ }
}
return result;
}
@@ -173,6 +211,7 @@ class G1ParGCAllocator : public CHeapObj<mtGC> {
protected:
G1CollectedHeap* _g1h;
+ typedef InCSetState::in_cset_state_t in_cset_state_t;
// The survivor alignment in effect in bytes.
// == 0 : don't align survivors
// != 0 : align survivors to that alignment
@@ -187,7 +226,12 @@ protected:
void add_to_undo_waste(size_t waste) { _undo_waste += waste; }
virtual void retire_alloc_buffers() = 0;
- virtual G1ParGCAllocBuffer* alloc_buffer(InCSetState dest, AllocationContext_t context) = 0;
+ virtual G1ParGCAllocBuffer* alloc_buffer(InCSetState dest, AllocationContext_t context, uint node_index) = 0;
+
+ // Returns the number of allocation buffers for the given dest.
+ // There is only 1 buffer for Old while Young may have multiple buffers depending on
+ // active NUMA nodes.
+ inline uint alloc_buffers_length(in_cset_state_t dest) const;
// Calculate the survivor space object alignment in bytes. Returns that or 0 if
// there are no restrictions on survivor alignment.
@@ -203,30 +247,34 @@ protected:
}
}
+ G1NUMA* _numa;
+ // The number of MutatorAllocRegions used, one per memory node.
+ size_t _num_alloc_regions;
+
public:
- G1ParGCAllocator(G1CollectedHeap* g1h) :
- _g1h(g1h), _survivor_alignment_bytes(calc_survivor_alignment_bytes()),
- _alloc_buffer_waste(0), _undo_waste(0) {
- }
+ G1ParGCAllocator(G1CollectedHeap* g1h);
static G1ParGCAllocator* create_allocator(G1CollectedHeap* g1h);
size_t alloc_buffer_waste() { return _alloc_buffer_waste; }
size_t undo_waste() {return _undo_waste; }
+ uint num_nodes() const { return (uint)_num_alloc_regions; }
// Allocate word_sz words in dest, either directly into the regions or by
// allocating a new PLAB. Returns the address of the allocated memory, NULL if
// not successful.
HeapWord* allocate_direct_or_new_plab(InCSetState dest,
size_t word_sz,
- AllocationContext_t context);
+ AllocationContext_t context,
+ uint node_index);
// Allocate word_sz words in the PLAB of dest. Returns the address of the
// allocated memory, NULL if not successful.
HeapWord* plab_allocate(InCSetState dest,
size_t word_sz,
- AllocationContext_t context) {
- G1ParGCAllocBuffer* buffer = alloc_buffer(dest, context);
+ AllocationContext_t context,
+ uint node_index) {
+ G1ParGCAllocBuffer* buffer = alloc_buffer(dest, context, node_index);
if (_survivor_alignment_bytes == 0) {
return buffer->allocate(word_sz);
} else {
@@ -235,19 +283,19 @@ public:
}
HeapWord* allocate(InCSetState dest, size_t word_sz,
- AllocationContext_t context) {
- HeapWord* const obj = plab_allocate(dest, word_sz, context);
+ AllocationContext_t context, uint node_index) {
+ HeapWord* const obj = plab_allocate(dest, word_sz, context, node_index);
if (obj != NULL) {
return obj;
}
- return allocate_direct_or_new_plab(dest, word_sz, context);
+ return allocate_direct_or_new_plab(dest, word_sz, context, node_index);
}
- void undo_allocation(InCSetState dest, HeapWord* obj, size_t word_sz, AllocationContext_t context) {
- if (alloc_buffer(dest, context)->contains(obj)) {
- assert(alloc_buffer(dest, context)->contains(obj + word_sz - 1),
+ void undo_allocation(InCSetState dest, HeapWord* obj, size_t word_sz, AllocationContext_t context, uint node_index) {
+ if (alloc_buffer(dest, context, node_index)->contains(obj)) {
+ assert(alloc_buffer(dest, context, node_index)->contains(obj + word_sz - 1),
"should contain whole object");
- alloc_buffer(dest, context)->undo_allocation(obj, word_sz);
+ alloc_buffer(dest, context, node_index)->undo_allocation(obj, word_sz);
} else {
CollectedHeap::fill_with_object(obj, word_sz);
add_to_undo_waste(word_sz);
@@ -256,19 +304,38 @@ public:
};
class G1DefaultParGCAllocator : public G1ParGCAllocator {
- G1ParGCAllocBuffer _surviving_alloc_buffer;
- G1ParGCAllocBuffer _tenured_alloc_buffer;
- G1ParGCAllocBuffer* _alloc_buffers[InCSetState::Num];
+ G1ParGCAllocBuffer** _alloc_buffers[InCSetState::Num];
public:
G1DefaultParGCAllocator(G1CollectedHeap* g1h);
+ ~G1DefaultParGCAllocator();
- virtual G1ParGCAllocBuffer* alloc_buffer(InCSetState dest, AllocationContext_t context) {
+ virtual G1ParGCAllocBuffer* alloc_buffer(InCSetState dest, AllocationContext_t context, uint node_index) {
assert(dest.is_valid(),
err_msg("Allocation buffer index out-of-bounds: " CSETSTATE_FORMAT, dest.value()));
assert(_alloc_buffers[dest.value()] != NULL,
err_msg("Allocation buffer is NULL: " CSETSTATE_FORMAT, dest.value()));
- return _alloc_buffers[dest.value()];
+ return alloc_buffer(dest.value(), node_index);
+ }
+
+ inline G1ParGCAllocBuffer* alloc_buffer(in_cset_state_t dest, uint node_index) const {
+ assert(dest < InCSetState::Num, err_msg("Allocation buffer index out of bounds: %u", dest));
+
+ if (dest == InCSetState::Young) {
+ assert(node_index < alloc_buffers_length(dest),
+ err_msg("Allocation buffer index out of bounds: %u, %u", dest, node_index));
+ return _alloc_buffers[dest][node_index];
+ } else {
+ return _alloc_buffers[dest][0];
+ }
+ }
+
+ inline uint alloc_buffers_length(in_cset_state_t dest) const {
+ if (dest == InCSetState::Young) {
+ return num_nodes();
+ } else {
+ return 1;
+ }
}
virtual void retire_alloc_buffers() ;
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
index 5cb135354..57dcff3f5 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
@@ -75,6 +75,9 @@ size_t G1CollectedHeap::_humongous_object_threshold_in_words = 0;
// to-be-collected) are printed at "strategic" points before / during
// / after the collection --- this is useful for debugging
#define YOUNG_LIST_VERBOSE 0
+
+#define THREAD_MIGRATION_MAX_TIMES 1
+
// CURRENT STATUS
// This file is under construction. Search for "FIXME".
@@ -515,7 +518,7 @@ G1CollectedHeap* G1CollectedHeap::_g1h;
// Private methods.
HeapRegion*
-G1CollectedHeap::new_region_try_secondary_free_list(bool is_old) {
+G1CollectedHeap::new_region_try_secondary_free_list(bool is_old, uint node_index) {
MutexLockerEx x(SecondaryFreeList_lock, Mutex::_no_safepoint_check_flag);
while (!_secondary_free_list.is_empty() || free_regions_coming()) {
if (!_secondary_free_list.is_empty()) {
@@ -531,7 +534,7 @@ G1CollectedHeap::new_region_try_secondary_free_list(bool is_old) {
assert(_hrm.num_free_regions() > 0, "if the secondary_free_list was not "
"empty we should have moved at least one entry to the free_list");
- HeapRegion* res = _hrm.allocate_free_region(is_old);
+ HeapRegion* res = _hrm.allocate_free_region(is_old, node_index);
if (G1ConcRegionFreeingVerbose) {
gclog_or_tty->print_cr("G1ConcRegionFreeing [region alloc] : "
"allocated " HR_FORMAT " from secondary_free_list",
@@ -553,7 +556,7 @@ G1CollectedHeap::new_region_try_secondary_free_list(bool is_old) {
return NULL;
}
-HeapRegion* G1CollectedHeap::new_region(size_t word_size, bool is_old, bool do_expand) {
+HeapRegion* G1CollectedHeap::new_region(size_t word_size, bool is_old, bool do_expand, uint node_index) {
assert(!isHumongous(word_size) || word_size <= HeapRegion::GrainWords,
"the only time we use this to allocate a humongous region is "
"when we are allocating a single humongous region");
@@ -565,21 +568,21 @@ HeapRegion* G1CollectedHeap::new_region(size_t word_size, bool is_old, bool do_e
gclog_or_tty->print_cr("G1ConcRegionFreeing [region alloc] : "
"forced to look at the secondary_free_list");
}
- res = new_region_try_secondary_free_list(is_old);
+ res = new_region_try_secondary_free_list(is_old, node_index);
if (res != NULL) {
return res;
}
}
}
- res = _hrm.allocate_free_region(is_old);
+ res = _hrm.allocate_free_region(is_old, node_index);
if (res == NULL) {
if (G1ConcRegionFreeingVerbose) {
gclog_or_tty->print_cr("G1ConcRegionFreeing [region alloc] : "
"res == NULL, trying the secondary_free_list");
}
- res = new_region_try_secondary_free_list(is_old);
+ res = new_region_try_secondary_free_list(is_old, node_index);
}
if (res == NULL && do_expand && _expand_heap_after_alloc_failure) {
// Currently, only attempts to allocate GC alloc regions set
@@ -593,12 +596,12 @@ HeapRegion* G1CollectedHeap::new_region(size_t word_size, bool is_old, bool do_e
ergo_format_reason("region allocation request failed")
ergo_format_byte("allocation request"),
word_size * HeapWordSize);
- if (expand(word_size * HeapWordSize)) {
+ if (expand_single_region(node_index)) {
// Given that expand() succeeded in expanding the heap, and we
// always expand the heap by an amount aligned to the heap
// region size, the free list should in theory not be empty.
// In either case allocate_free_region() will check for NULL.
- res = _hrm.allocate_free_region(is_old);
+ res = _hrm.allocate_free_region(is_old, node_index);
} else {
_expand_heap_after_alloc_failure = false;
}
@@ -919,22 +922,29 @@ HeapWord* G1CollectedHeap::attempt_allocation_slow(size_t word_size,
{
MutexLockerEx x(Heap_lock);
- result = _allocator->mutator_alloc_region(context)->attempt_allocation_locked(word_size,
- false /* bot_updates */);
+ uint node_idx_by_locked_alloc = G1NUMA::AnyNodeIndex;
+ result = _allocator->attempt_allocation_locked(word_size,
+ false /* bot_updates */,
+ node_idx_by_locked_alloc);
if (result != NULL) {
return result;
}
- // If we reach here, attempt_allocation_locked() above failed to
- // allocate a new region. So the mutator alloc region should be NULL.
- assert(_allocator->mutator_alloc_region(context)->get() == NULL, "only way to get here");
-
if (GC_locker::is_active_and_needs_gc()) {
if (g1_policy()->can_expand_young_list()) {
// No need for an ergo verbose message here,
// can_expand_young_list() does this when it returns true.
- result = _allocator->mutator_alloc_region(context)->attempt_allocation_force(word_size,
- false /* bot_updates */);
+ uint curr_node_index = _allocator->current_node_index();
+ uint thread_migration_times = 0;
+ while (curr_node_index != node_idx_by_locked_alloc && thread_migration_times < THREAD_MIGRATION_MAX_TIMES) {
+ result = _allocator->attempt_allocation_locked(word_size, false, node_idx_by_locked_alloc);
+ if (result != NULL) {
+ return result;
+ }
+ thread_migration_times++;
+ curr_node_index = _allocator->current_node_index();
+ }
+ result = _allocator->attempt_allocation_force(word_size, false /* bot_updates */, node_idx_by_locked_alloc);
if (result != NULL) {
return result;
}
@@ -994,7 +1004,7 @@ HeapWord* G1CollectedHeap::attempt_allocation_slow(size_t word_size,
// first attempt (without holding the Heap_lock) here and the
// follow-on attempt will be at the start of the next loop
// iteration (after taking the Heap_lock).
- result = _allocator->mutator_alloc_region(context)->attempt_allocation(word_size,
+ result = _allocator->mutator_alloc_region()->attempt_allocation(word_size,
false /* bot_updates */);
if (result != NULL) {
return result;
@@ -1134,12 +1144,12 @@ HeapWord* G1CollectedHeap::attempt_allocation_at_safepoint(size_t word_size,
AllocationContext_t context,
bool expect_null_mutator_alloc_region) {
assert_at_safepoint(true /* should_be_vm_thread */);
- assert(_allocator->mutator_alloc_region(context)->get() == NULL ||
+ assert(!_allocator->has_mutator_alloc_region() ||
!expect_null_mutator_alloc_region,
"the current alloc region was unexpectedly found to be non-NULL");
if (!isHumongous(word_size)) {
- return _allocator->mutator_alloc_region(context)->attempt_allocation_locked(word_size,
+ return _allocator->mutator_alloc_region()->attempt_allocation_locked(word_size,
false /* bot_updates */);
} else {
HeapWord* result = humongous_obj_allocate(word_size, context);
@@ -1341,7 +1351,7 @@ bool G1CollectedHeap::do_collection(bool explicit_gc,
concurrent_mark()->abort();
// Make sure we'll choose a new allocation region afterwards.
- _allocator->release_mutator_alloc_region();
+ _allocator->release_mutator_alloc_regions();
_allocator->abandon_gc_alloc_regions();
g1_rem_set()->cleanupHRRS();
@@ -1517,7 +1527,7 @@ bool G1CollectedHeap::do_collection(bool explicit_gc,
clear_cset_fast_test();
- _allocator->init_mutator_alloc_region();
+ _allocator->init_mutator_alloc_regions();
double end = os::elapsedTime();
g1_policy()->record_full_collection_end();
@@ -1792,6 +1802,18 @@ bool G1CollectedHeap::expand(size_t expand_bytes) {
return regions_to_expand > 0;
}
+bool G1CollectedHeap::expand_single_region(uint node_index) {
+ uint expanded_by = _hrm.expand_on_preferred_node(node_index);
+
+ if (expanded_by == 0) {
+ assert(is_maximal_no_gc(), err_msg("Should be no regions left, available: %u", _hrm.available()));
+ return false;
+ }
+
+ g1_policy()->record_new_heap_size(num_regions());
+ return true;
+}
+
void G1CollectedHeap::shrink_helper(size_t shrink_bytes) {
size_t aligned_shrink_bytes =
ReservedSpace::page_align_size_down(shrink_bytes);
@@ -1853,6 +1875,7 @@ G1CollectedHeap::G1CollectedHeap(G1CollectorPolicy* policy_) :
_ref_processor_cm(NULL),
_ref_processor_stw(NULL),
_bot_shared(NULL),
+ _numa(G1NUMA::numa()),
_evac_failure_scan_stack(NULL),
_mark_in_progress(false),
_cg1r(NULL),
@@ -2015,10 +2038,11 @@ jint G1CollectedHeap::initialize() {
// Carve out the G1 part of the heap.
ReservedSpace g1_rs = heap_rs.first_part(max_byte_size);
+ size_t page_size = UseLargePages ? os::large_page_size() : os::vm_page_size();
G1RegionToSpaceMapper* heap_storage =
G1RegionToSpaceMapper::create_mapper(g1_rs,
g1_rs.size(),
- UseLargePages ? os::large_page_size() : os::vm_page_size(),
+ page_size,
HeapRegion::GrainBytes,
1,
mtJavaHeap);
@@ -2077,6 +2101,7 @@ jint G1CollectedHeap::initialize() {
_humongous_reclaim_candidates.initialize(start, end, granularity);
}
+ _numa->set_region_info(HeapRegion::GrainBytes, page_size);
// Create the ConcurrentMark data structure and thread.
// (Must do this late, so that "max_regions" is defined.)
_cm = new ConcurrentMark(this, prev_bitmap_storage, next_bitmap_storage);
@@ -2145,7 +2170,7 @@ jint G1CollectedHeap::initialize() {
dummy_region->set_top(dummy_region->end());
G1AllocRegion::setup(this, dummy_region);
- _allocator->init_mutator_alloc_region();
+ _allocator->init_mutator_alloc_regions();
// Do create of the monitoring and management support so that
// values in the heap have been properly initialized.
@@ -2975,8 +3000,7 @@ size_t G1CollectedHeap::unsafe_max_tlab_alloc(Thread* ignored) const {
// Also, this value can be at most the humongous object threshold,
// since we can't allow tlabs to grow big enough to accommodate
// humongous objects.
-
- HeapRegion* hr = _allocator->mutator_alloc_region(AllocationContext::current())->get();
+ HeapRegion* hr = _allocator->mutator_alloc_region()->get();
size_t max_tlab = max_tlab_size() * wordSize;
if (hr == NULL) {
return max_tlab;
@@ -3535,6 +3559,15 @@ void G1CollectedHeap::print_on(outputStream* st) const {
st->print("%u survivors (" SIZE_FORMAT "K)", survivor_regions,
(size_t) survivor_regions * HeapRegion::GrainBytes / K);
st->cr();
+ if (_numa->is_enabled()) {
+ uint num_nodes = _numa->num_active_nodes();
+ st->print(" remaining free region(s) on each NUMA node: ");
+ const int* node_ids = _numa->node_ids();
+ for (uint node_index = 0; node_index < num_nodes; node_index++) {
+ st->print("%d=%u ", node_ids[node_index], _hrm.num_free_regions(node_index));
+ }
+ st->cr();
+ }
MetaspaceAux::print_on(st);
}
@@ -4032,6 +4065,8 @@ void G1CollectedHeap::log_gc_footer(double pause_time_sec) {
g1_policy()->phase_times()->note_gc_end();
g1_policy()->phase_times()->print(pause_time_sec);
g1_policy()->print_detailed_heap_transition();
+ // Print NUMA statistics.
+ _numa->print_statistics();
} else {
if (evacuation_failed()) {
gclog_or_tty->print("--");
@@ -4042,6 +4077,14 @@ void G1CollectedHeap::log_gc_footer(double pause_time_sec) {
gclog_or_tty->flush();
}
+void G1CollectedHeap::verify_numa_regions(const char* desc) {
+ if (G1Log::finer()) {
+ // Iterate all heap regions to print matching between preferred numa id and actual numa id.
+ G1NodeIndexCheckClosure cl(desc, _numa);
+ heap_region_iterate(&cl);
+ }
+}
+
bool
G1CollectedHeap::do_collection_pause_at_safepoint(double target_pause_time_ms) {
assert_at_safepoint(true /* should_be_vm_thread */);
@@ -4149,7 +4192,7 @@ G1CollectedHeap::do_collection_pause_at_safepoint(double target_pause_time_ms) {
verify_before_gc();
check_bitmaps("GC Start");
-
+ verify_numa_regions("GC Start");
COMPILER2_PRESENT(DerivedPointerTable::clear());
// Please see comment in g1CollectedHeap.hpp and
@@ -4169,7 +4212,7 @@ G1CollectedHeap::do_collection_pause_at_safepoint(double target_pause_time_ms) {
// Forget the current alloc region (we might even choose it to be part
// of the collection set!).
- _allocator->release_mutator_alloc_region();
+ _allocator->release_mutator_alloc_regions();
// We should call this after we retire the mutator alloc
// region(s) so that all the ALLOC / RETIRE events are generated
@@ -4223,7 +4266,6 @@ G1CollectedHeap::do_collection_pause_at_safepoint(double target_pause_time_ms) {
#endif // YOUNG_LIST_VERBOSE
g1_policy()->finalize_cset(target_pause_time_ms, evacuation_info);
-
// Make sure the remembered sets are up to date. This needs to be
// done before register_humongous_regions_with_cset(), because the
// remembered sets are used there to choose eager reclaim candidates.
@@ -4327,7 +4369,7 @@ G1CollectedHeap::do_collection_pause_at_safepoint(double target_pause_time_ms) {
g1_policy()->print_collection_set(g1_policy()->inc_cset_head(), gclog_or_tty);
#endif // YOUNG_LIST_VERBOSE
- _allocator->init_mutator_alloc_region();
+ _allocator->init_mutator_alloc_regions();
{
size_t expand_bytes = g1_policy()->expansion_amount();
@@ -4388,7 +4430,7 @@ G1CollectedHeap::do_collection_pause_at_safepoint(double target_pause_time_ms) {
verify_after_gc();
check_bitmaps("GC End");
-
+ verify_numa_regions("GC End");
assert(!ref_processor_stw()->discovery_enabled(), "Postcondition");
ref_processor_stw()->verify_no_references_recorded();
@@ -4744,6 +4786,7 @@ class G1KlassScanClosure : public KlassClosure {
class G1ParTask : public AbstractGangTask {
protected:
G1CollectedHeap* _g1h;
+ G1ParScanThreadStateSet* _per_thread_states;
RefToScanQueueSet *_queues;
G1RootProcessor* _root_processor;
TaskTerminator _terminator;
@@ -4753,9 +4796,10 @@ protected:
Mutex* stats_lock() { return &_stats_lock; }
public:
- G1ParTask(G1CollectedHeap* g1h, RefToScanQueueSet *task_queues, G1RootProcessor* root_processor)
+ G1ParTask(G1CollectedHeap* g1h, G1ParScanThreadStateSet* per_thread_states, RefToScanQueueSet *task_queues, G1RootProcessor* root_processor)
: AbstractGangTask("G1 collection"),
_g1h(g1h),
+ _per_thread_states(per_thread_states),
_queues(task_queues),
_root_processor(root_processor),
_terminator(0, _queues),
@@ -4816,26 +4860,26 @@ public:
ReferenceProcessor* rp = _g1h->ref_processor_stw();
- G1ParScanThreadState pss(_g1h, worker_id, rp);
- G1ParScanHeapEvacFailureClosure evac_failure_cl(_g1h, &pss, rp);
+ G1ParScanThreadState* pss = _per_thread_states->state_for_worker(worker_id, rp);
+ G1ParScanHeapEvacFailureClosure evac_failure_cl(_g1h, pss, rp);
- pss.set_evac_failure_closure(&evac_failure_cl);
+ pss->set_evac_failure_closure(&evac_failure_cl);
bool only_young = _g1h->g1_policy()->gcs_are_young();
// Non-IM young GC.
- G1ParCopyClosure<G1BarrierNone, G1MarkNone> scan_only_root_cl(_g1h, &pss, rp);
+ G1ParCopyClosure<G1BarrierNone, G1MarkNone> scan_only_root_cl(_g1h, pss, rp);
G1CLDClosure<G1MarkNone> scan_only_cld_cl(&scan_only_root_cl,
only_young, // Only process dirty klasses.
false); // No need to claim CLDs.
// IM young GC.
// Strong roots closures.
- G1ParCopyClosure<G1BarrierNone, G1MarkFromRoot> scan_mark_root_cl(_g1h, &pss, rp);
+ G1ParCopyClosure<G1BarrierNone, G1MarkFromRoot> scan_mark_root_cl(_g1h, pss, rp);
G1CLDClosure<G1MarkFromRoot> scan_mark_cld_cl(&scan_mark_root_cl,
false, // Process all klasses.
true); // Need to claim CLDs.
// Weak roots closures.
- G1ParCopyClosure<G1BarrierNone, G1MarkPromotedFromRoot> scan_mark_weak_root_cl(_g1h, &pss, rp);
+ G1ParCopyClosure<G1BarrierNone, G1MarkPromotedFromRoot> scan_mark_weak_root_cl(_g1h, pss, rp);
G1CLDClosure<G1MarkPromotedFromRoot> scan_mark_weak_cld_cl(&scan_mark_weak_root_cl,
false, // Process all klasses.
true); // Need to claim CLDs.
@@ -4866,7 +4910,7 @@ public:
weak_cld_cl = &scan_only_cld_cl;
}
- pss.start_strong_roots();
+ pss->start_strong_roots();
_root_processor->evacuate_roots(strong_root_cl,
weak_root_cl,
@@ -4875,31 +4919,31 @@ public:
trace_metadata,
worker_id);
- G1ParPushHeapRSClosure push_heap_rs_cl(_g1h, &pss);
+ G1ParPushHeapRSClosure push_heap_rs_cl(_g1h, pss);
_root_processor->scan_remembered_sets(&push_heap_rs_cl,
weak_root_cl,
worker_id);
- pss.end_strong_roots();
+ pss->end_strong_roots();
{
double start = os::elapsedTime();
- G1ParEvacuateFollowersClosure evac(_g1h, &pss, _queues, _terminator.terminator());
+ G1ParEvacuateFollowersClosure evac(_g1h, pss, _queues, _terminator.terminator());
evac.do_void();
double elapsed_sec = os::elapsedTime() - start;
- double term_sec = pss.term_time();
+ double term_sec = pss->term_time();
_g1h->g1_policy()->phase_times()->add_time_secs(G1GCPhaseTimes::ObjCopy, worker_id, elapsed_sec - term_sec);
_g1h->g1_policy()->phase_times()->record_time_secs(G1GCPhaseTimes::Termination, worker_id, term_sec);
- _g1h->g1_policy()->phase_times()->record_thread_work_item(G1GCPhaseTimes::Termination, worker_id, pss.term_attempts());
+ _g1h->g1_policy()->phase_times()->record_thread_work_item(G1GCPhaseTimes::Termination, worker_id, pss->term_attempts());
}
- _g1h->g1_policy()->record_thread_age_table(pss.age_table());
- _g1h->update_surviving_young_words(pss.surviving_young_words()+1);
+ _g1h->g1_policy()->record_thread_age_table(pss->age_table());
+ _g1h->update_surviving_young_words(pss->surviving_young_words()+1);
if (ParallelGCVerbose) {
MutexLocker x(stats_lock());
- pss.print_termination_stats(worker_id);
+ pss->print_termination_stats(worker_id);
}
- assert(pss.queue_is_empty(), "should be empty");
+ assert(pss->queue_is_empty(), "should be empty");
// Close the inner scope so that the ResourceMark and HandleMark
// destructors are executed here and are included as part of the
@@ -5890,8 +5934,9 @@ void G1CollectedHeap::evacuate_collection_set(EvacuationInfo& evacuation_info) {
double end_par_time_sec;
{
+ G1ParScanThreadStateSet per_thread_states(this, workers()->active_workers());
G1RootProcessor root_processor(this);
- G1ParTask g1_par_task(this, _task_queues, &root_processor);
+ G1ParTask g1_par_task(this, &per_thread_states, _task_queues, &root_processor);
// InitialMark needs claim bits to keep track of the marked-through CLDs.
if (g1_policy()->during_initial_mark_pause()) {
ClassLoaderDataGraph::clear_claimed_marks();
@@ -5916,6 +5961,8 @@ void G1CollectedHeap::evacuate_collection_set(EvacuationInfo& evacuation_info) {
// elapsed time before closing the scope so that time
// taken for the destructor is NOT included in the
// reported parallel time.
+
+ per_thread_states.flush();
}
G1GCPhaseTimes* phase_times = g1_policy()->phase_times();
@@ -6325,7 +6372,6 @@ void G1CollectedHeap::free_collection_set(HeapRegion* cs_head, EvacuationInfo& e
// all we need to do to clear the young list is clear its
// head and length, and unlink any young regions in the code below
_young_list->clear();
-
G1CollectorPolicy* policy = g1_policy();
double start_sec = os::elapsedTime();
@@ -6803,7 +6849,8 @@ bool G1CollectedHeap::is_in_closed_subset(const void* p) const {
// Methods for the mutator alloc region
HeapRegion* G1CollectedHeap::new_mutator_alloc_region(size_t word_size,
- bool force) {
+ bool force,
+ uint node_index) {
assert_heap_locked_or_at_safepoint(true /* should_be_vm_thread */);
assert(!force || g1_policy()->can_expand_young_list(),
"if force is true we should be able to expand the young list");
@@ -6811,7 +6858,8 @@ HeapRegion* G1CollectedHeap::new_mutator_alloc_region(size_t word_size,
if (force || !young_list_full) {
HeapRegion* new_alloc_region = new_region(word_size,
false /* is_old */,
- false /* do_expand */);
+ false /* do_expand */,
+ node_index);
if (new_alloc_region != NULL) {
set_region_short_lived_locked(new_alloc_region);
_hr_printer.alloc(new_alloc_region, G1HRPrinter::Eden, young_list_full);
@@ -6856,14 +6904,16 @@ void G1CollectedHeap::set_par_threads() {
HeapRegion* G1CollectedHeap::new_gc_alloc_region(size_t word_size,
uint count,
- InCSetState dest) {
+ InCSetState dest,
+ uint node_index) {
assert(FreeList_lock->owned_by_self(), "pre-condition");
if (count < g1_policy()->max_regions(dest)) {
const bool is_survivor = (dest.is_young());
HeapRegion* new_alloc_region = new_region(word_size,
!is_survivor,
- true /* do_expand */);
+ true /* do_expand */,
+ node_index);
if (new_alloc_region != NULL) {
// We really only need to do this for old regions given that we
// should never scan survivors. But it doesn't hurt to do it
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
index f8c52e681..61d5aad2d 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
@@ -268,6 +268,9 @@ private:
// Callback for region mapping changed events.
G1RegionMappingChangedListener _listener;
+ // Handle G1 NUMA support.
+ G1NUMA* _numa;
+
// The sequence of all heap regions in the heap.
HeapRegionManager _hrm;
@@ -468,14 +471,14 @@ protected:
// check whether there's anything available on the
// secondary_free_list and/or wait for more regions to appear on
// that list, if _free_regions_coming is set.
- HeapRegion* new_region_try_secondary_free_list(bool is_old);
+ HeapRegion* new_region_try_secondary_free_list(bool is_old, uint node_index);
// Try to allocate a single non-humongous HeapRegion sufficient for
// an allocation of the given word_size. If do_expand is true,
// attempt to expand the heap if necessary to satisfy the allocation
// request. If the region is to be used as an old region or for a
// humongous object, set is_old to true. If not, to false.
- HeapRegion* new_region(size_t word_size, bool is_old, bool do_expand);
+ HeapRegion* new_region(size_t word_size, bool is_old, bool do_expand, uint node_index = G1NUMA::AnyNodeIndex);
// Initialize a contiguous set of free regions of length num_regions
// and starting at index first so that they appear as a single
@@ -573,14 +576,16 @@ protected:
// may not be a humongous - it must fit into a single heap region.
inline HeapWord* par_allocate_during_gc(InCSetState dest,
size_t word_size,
- AllocationContext_t context);
+ AllocationContext_t context,
+ uint node_index);
// Ensure that no further allocations can happen in "r", bearing in mind
// that parallel threads might be attempting allocations.
void par_allocate_remaining_space(HeapRegion* r);
// Allocation attempt during GC for a survivor object / PLAB.
inline HeapWord* survivor_attempt_allocation(size_t word_size,
- AllocationContext_t context);
+ AllocationContext_t context,
+ uint node_index);
// Allocation attempt during GC for an old object / PLAB.
inline HeapWord* old_attempt_allocation(size_t word_size,
@@ -589,13 +594,13 @@ protected:
// These methods are the "callbacks" from the G1AllocRegion class.
// For mutator alloc regions.
- HeapRegion* new_mutator_alloc_region(size_t word_size, bool force);
+ HeapRegion* new_mutator_alloc_region(size_t word_size, bool force, uint node_index);
void retire_mutator_alloc_region(HeapRegion* alloc_region,
size_t allocated_bytes);
// For GC alloc regions.
HeapRegion* new_gc_alloc_region(size_t word_size, uint count,
- InCSetState dest);
+ InCSetState dest, uint node_index);
void retire_gc_alloc_region(HeapRegion* alloc_region,
size_t allocated_bytes, InCSetState dest);
@@ -641,6 +646,8 @@ protected:
// after processing.
void enqueue_discovered_references(uint no_of_gc_workers);
+ void verify_numa_regions(const char* desc);
+
public:
G1Allocator* allocator() {
@@ -654,11 +661,13 @@ public:
return _g1mm;
}
+ G1NUMA* numa() const { return _numa; }
// Expand the garbage-first heap by at least the given size (in bytes!).
// Returns true if the heap was expanded by the requested amount;
// false otherwise.
// (Rounds up to a HeapRegion boundary.)
bool expand(size_t expand_bytes);
+ bool expand_single_region(uint node_index);
// Returns the PLAB statistics for a given destination.
inline PLABStats* alloc_buffer_stats(InCSetState dest);
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp
index c8b270aa3..9350c7bac 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp
@@ -58,10 +58,11 @@ size_t G1CollectedHeap::desired_plab_sz(InCSetState dest) {
HeapWord* G1CollectedHeap::par_allocate_during_gc(InCSetState dest,
size_t word_size,
- AllocationContext_t context) {
+ AllocationContext_t context,
+ uint node_index) {
switch (dest.value()) {
case InCSetState::Young:
- return survivor_attempt_allocation(word_size, context);
+ return survivor_attempt_allocation(word_size, context, node_index);
case InCSetState::Old:
return old_attempt_allocation(word_size, context);
default:
@@ -138,7 +139,7 @@ inline HeapWord* G1CollectedHeap::attempt_allocation(size_t word_size,
"be called for humongous allocation requests");
AllocationContext_t context = AllocationContext::current();
- HeapWord* result = _allocator->mutator_alloc_region(context)->attempt_allocation(word_size,
+ HeapWord* result = _allocator->mutator_alloc_region()->attempt_allocation(word_size,
false /* bot_updates */);
if (result == NULL) {
result = attempt_allocation_slow(word_size,
@@ -154,15 +155,16 @@ inline HeapWord* G1CollectedHeap::attempt_allocation(size_t word_size,
}
inline HeapWord* G1CollectedHeap::survivor_attempt_allocation(size_t word_size,
- AllocationContext_t context) {
+ AllocationContext_t context,
+ uint node_index) {
assert(!isHumongous(word_size),
"we should not be seeing humongous-size allocations in this path");
- HeapWord* result = _allocator->survivor_gc_alloc_region(context)->attempt_allocation(word_size,
+ HeapWord* result = _allocator->survivor_gc_alloc_region(node_index)->attempt_allocation(word_size,
false /* bot_updates */);
if (result == NULL) {
MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag);
- result = _allocator->survivor_gc_alloc_region(context)->attempt_allocation_locked(word_size,
+ result = _allocator->survivor_gc_alloc_region(node_index)->attempt_allocation_locked(word_size,
false /* bot_updates */);
}
if (result != NULL) {
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1InCSetState.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1InCSetState.hpp
index 50639c330..cbeb93f34 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1InCSetState.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1InCSetState.hpp
@@ -58,10 +58,10 @@ struct InCSetState {
// or not, which is encoded by values < 0.
// The other values are simply encoded in increasing generation order, which
// makes getting the next generation fast by a simple increment.
- Humongous = -1, // The region is humongous - note that actually any value < 0 would be possible here.
- NotInCSet = 0, // The region is not in the collection set.
- Young = 1, // The region is in the collection set and a young region.
- Old = 2, // The region is in the collection set and an old region.
+ Humongous = -2, // The region is humongous - note that actually any value < 0 would be possible here.
+ NotInCSet = -1, // The region is not in the collection set.
+ Young = 0, // The region is in the collection set and a young region.
+ Old = 1, // The region is in the collection set and an old region.
Num
};
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1NUMA.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1NUMA.cpp
new file mode 100644
index 000000000..05b4d8989
--- /dev/null
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1NUMA.cpp
@@ -0,0 +1,311 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "gc_implementation/g1/g1Log.hpp"
+#include "gc_implementation/g1/g1NUMA.hpp"
+#include "memory/allocation.hpp"
+#include "runtime/globals.hpp"
+#include "runtime/os.hpp"
+#include "utilities/align.hpp"
+
+G1NUMA* G1NUMA::_inst = NULL;
+
+size_t G1NUMA::region_size() const {
+ assert(_region_size > 0, "Heap region size is not yet set");
+ return _region_size;
+}
+
+size_t G1NUMA::page_size() const {
+ assert(_page_size > 0, "Page size not is yet set");
+ return _page_size;
+}
+
+bool G1NUMA::is_enabled() const { return num_active_nodes() > 1; }
+
+G1NUMA* G1NUMA::create() {
+ guarantee(_inst == NULL, "Should be called once.");
+ _inst = new G1NUMA();
+
+ // NUMA only supported on Linux.
+#ifdef LINUX
+ _inst->initialize(UseNUMA);
+#else
+ _inst->initialize(false);
+#endif /* LINUX */
+
+ return _inst;
+}
+
+ // Returns memory node ids
+const int* G1NUMA::node_ids() const {
+ return _node_ids;
+}
+
+uint G1NUMA::index_of_node_id(int node_id) const {
+ assert(node_id >= 0, err_msg("invalid node id %d", node_id));
+ assert(node_id < _len_node_id_to_index_map, err_msg("invalid node id %d", node_id));
+ uint node_index = _node_id_to_index_map[node_id];
+ assert(node_index != G1NUMA::UnknownNodeIndex,
+ err_msg("invalid node id %d", node_id));
+ return node_index;
+}
+
+G1NUMA::G1NUMA() :
+ _node_id_to_index_map(NULL), _len_node_id_to_index_map(0),
+ _node_ids(NULL), _num_active_node_ids(0),
+ _region_size(0), _page_size(0), _stats(NULL) {
+}
+
+void G1NUMA::initialize_without_numa() {
+ // If NUMA is not enabled or supported, initialize as having a singel node.
+ _num_active_node_ids = 1;
+ _node_ids = NEW_C_HEAP_ARRAY(int, _num_active_node_ids, mtGC);
+ _node_ids[0] = 0;
+ // Map index 0 to node 0
+ _len_node_id_to_index_map = 1;
+ _node_id_to_index_map = NEW_C_HEAP_ARRAY(uint, _len_node_id_to_index_map, mtGC);
+ _node_id_to_index_map[0] = 0;
+}
+
+void G1NUMA::initialize(bool use_numa) {
+ if (!use_numa) {
+ initialize_without_numa();
+ return;
+ }
+
+ assert(UseNUMA, "Invariant");
+ size_t num_node_ids = os::numa_get_groups_num();
+
+ // Create an array of active node ids.
+ _node_ids = NEW_C_HEAP_ARRAY(int, num_node_ids, mtGC);
+ _num_active_node_ids = (uint)os::numa_get_leaf_groups(_node_ids, num_node_ids);
+
+ int max_node_id = 0;
+ for (uint i = 0; i < _num_active_node_ids; i++) {
+ max_node_id = MAX2(max_node_id, _node_ids[i]);
+ }
+
+ // Create a mapping between node_id and index.
+ _len_node_id_to_index_map = max_node_id + 1;
+ _node_id_to_index_map = NEW_C_HEAP_ARRAY(uint, _len_node_id_to_index_map, mtGC);
+
+ // Set all indices with unknown node id.
+ for (int i = 0; i < _len_node_id_to_index_map; i++) {
+ _node_id_to_index_map[i] = G1NUMA::UnknownNodeIndex;
+ }
+
+ // Set the indices for the actually retrieved node ids.
+ for (uint i = 0; i < _num_active_node_ids; i++) {
+ _node_id_to_index_map[_node_ids[i]] = i;
+ }
+
+ _stats = new G1NUMAStats(_node_ids, _num_active_node_ids);
+}
+
+G1NUMA::~G1NUMA() {
+ delete _stats;
+ FREE_C_HEAP_ARRAY(int, _node_id_to_index_map, mtGC);
+ FREE_C_HEAP_ARRAY(int, _node_ids, mtGC);
+}
+
+void G1NUMA::set_region_info(size_t region_size, size_t page_size) {
+ _region_size = region_size;
+ _page_size = page_size;
+}
+
+uint G1NUMA::num_active_nodes() const {
+ assert(_num_active_node_ids > 0, "just checking");
+ return _num_active_node_ids;
+}
+
+uint G1NUMA::index_of_current_thread() const {
+ if (!is_enabled()) {
+ return 0;
+ }
+ return index_of_node_id(os::numa_get_group_id());
+}
+
+uint G1NUMA::preferred_node_index_for_index(uint region_index) const {
+ if (region_size() >= page_size()) {
+ // Simple case, pages are smaller than the region so we
+ // can just alternate over the nodes.
+ return region_index % _num_active_node_ids;
+ } else {
+ // Multiple regions in one page, so we need to make sure the
+ // regions within a page is preferred on the same node.
+ size_t regions_per_page = page_size() / region_size();
+ return (region_index / regions_per_page) % _num_active_node_ids;
+ }
+}
+
+int G1NUMA::numa_id(int index) const {
+ assert(index < _len_node_id_to_index_map, err_msg("Index %d out of range: [0,%d)",
+ index, _len_node_id_to_index_map));
+ return _node_ids[index];
+}
+
+uint G1NUMA::index_of_address(HeapWord *address) const {
+ int numa_id = os::numa_get_group_id_for_address((const void*)address);
+ if (numa_id == -1) {
+ return UnknownNodeIndex;
+ } else {
+ return index_of_node_id(numa_id);
+ }
+}
+
+uint G1NUMA::index_for_region(HeapRegion* hr) const {
+ if (!is_enabled()) {
+ return 0;
+ }
+
+ if (AlwaysPreTouch) {
+ // If we already pretouched, we can check actual node index here.
+ // However, if node index is still unknown, use preferred node index.
+ uint node_index = index_of_address(hr->bottom());
+ if (node_index != UnknownNodeIndex) {
+ return node_index;
+ }
+ }
+
+ return preferred_node_index_for_index(hr->hrm_index());
+}
+
+// Request to spread the given memory evenly across the available NUMA
+// nodes. Which node to request for a given address is given by the
+// region size and the page size. Below are two examples on 4 NUMA nodes system:
+// 1. G1HeapRegionSize(_region_size) is larger than or equal to page size.
+// * Page #: |-0--||-1--||-2--||-3--||-4--||-5--||-6--||-7--||-8--||-9--||-10-||-11-||-12-||-13-||-14-||-15-|
+// * HeapRegion #: |----#0----||----#1----||----#2----||----#3----||----#4----||----#5----||----#6----||----#7----|
+// * NUMA node #: |----#0----||----#1----||----#2----||----#3----||----#0----||----#1----||----#2----||----#3----|
+// 2. G1HeapRegionSize(_region_size) is smaller than page size.
+// Memory will be touched one page at a time because G1RegionToSpaceMapper commits
+// pages one by one.
+// * Page #: |-----0----||-----1----||-----2----||-----3----||-----4----||-----5----||-----6----||-----7----|
+// * HeapRegion #: |-#0-||-#1-||-#2-||-#3-||-#4-||-#5-||-#6-||-#7-||-#8-||-#9-||#10-||#11-||#12-||#13-||#14-||#15-|
+// * NUMA node #: |----#0----||----#1----||----#2----||----#3----||----#0----||----#1----||----#2----||----#3----|
+void G1NUMA::request_memory_on_node(void* aligned_address, size_t size_in_bytes, uint region_index) {
+ if (!is_enabled()) {
+ return;
+ }
+
+ if (size_in_bytes == 0) {
+ return;
+ }
+
+ uint node_index = preferred_node_index_for_index(region_index);
+
+ assert(is_aligned(aligned_address, page_size()), err_msg("Given address (" PTR_FORMAT ") should be aligned.", p2i(aligned_address)));
+ assert(is_aligned(size_in_bytes, page_size()), err_msg("Given size (" SIZE_FORMAT ") should be aligned.", size_in_bytes));
+
+ if (G1Log::finer()) {
+ gclog_or_tty->print_cr("Request memory [" PTR_FORMAT ", " PTR_FORMAT ") to be NUMA id (%d)",
+ p2i(aligned_address), p2i((char*)aligned_address + size_in_bytes), _node_ids[node_index]);
+ }
+ os::numa_make_local((char*)aligned_address, size_in_bytes, _node_ids[node_index]);
+}
+
+uint G1NUMA::max_search_depth() const {
+ // Multiple of 3 is just random number to limit iterations.
+ // There would be some cases that 1 page may be consisted of multiple HeapRegions.
+ return 3 * MAX2((uint)(page_size() / region_size()), (uint)1) * num_active_nodes();
+}
+
+void G1NUMA::update_statistics(G1NUMAStats::NodeDataItems phase,
+ uint requested_node_index,
+ uint allocated_node_index) {
+ if (_stats == NULL) {
+ return;
+ }
+
+ uint converted_req_index;
+ if(requested_node_index < _num_active_node_ids) {
+ converted_req_index = requested_node_index;
+ } else {
+ assert(requested_node_index == AnyNodeIndex,
+ err_msg("Requested node index %u should be AnyNodeIndex.", requested_node_index));
+ converted_req_index = _num_active_node_ids;
+ }
+ _stats->update(phase, converted_req_index, allocated_node_index);
+}
+
+void G1NUMA::copy_statistics(G1NUMAStats::NodeDataItems phase,
+ uint requested_node_index,
+ size_t* allocated_stat) {
+ if (_stats == NULL) {
+ return;
+ }
+
+ _stats->copy(phase, requested_node_index, allocated_stat);
+}
+
+void G1NUMA::print_statistics() const {
+ if (_stats == NULL) {
+ return;
+ }
+
+ _stats->print_statistics();
+}
+
+G1NodeIndexCheckClosure::G1NodeIndexCheckClosure(const char* desc, G1NUMA* numa) :
+ _desc(desc), _numa(numa) {
+
+ uint num_nodes = _numa->num_active_nodes();
+ _matched = NEW_C_HEAP_ARRAY(uint, num_nodes, mtGC);
+ _mismatched = NEW_C_HEAP_ARRAY(uint, num_nodes, mtGC);
+ _total = NEW_C_HEAP_ARRAY(uint, num_nodes, mtGC);
+ memset(_matched, 0, sizeof(uint) * num_nodes);
+ memset(_mismatched, 0, sizeof(uint) * num_nodes);
+ memset(_total, 0, sizeof(uint) * num_nodes);
+}
+
+G1NodeIndexCheckClosure::~G1NodeIndexCheckClosure() {
+ if (G1Log::finer()) {
+ gclog_or_tty->print("%s: NUMA region verification (id: matched/mismatched/total): ", _desc);
+ const int* numa_ids = _numa->node_ids();
+ for (uint i = 0; i < _numa->num_active_nodes(); i++) {
+ gclog_or_tty->print("%d: %u/%u/%u ", numa_ids[i], _matched[i], _mismatched[i], _total[i]);
+ }
+ gclog_or_tty->print_cr(" ");
+ }
+ FREE_C_HEAP_ARRAY(uint, _matched, mtGC);
+ FREE_C_HEAP_ARRAY(uint, _mismatched, mtGC);
+ FREE_C_HEAP_ARRAY(uint, _total, mtGC);
+}
+
+bool G1NodeIndexCheckClosure::doHeapRegion(HeapRegion* hr) {
+ // Preferred node index will only have valid node index.
+ uint preferred_node_index = _numa->preferred_node_index_for_index(hr->hrm_index());
+ // Active node index may have UnknownNodeIndex.
+ uint active_node_index = _numa->index_of_address(hr->bottom());
+
+ if (preferred_node_index == active_node_index) {
+ _matched[preferred_node_index]++;
+ } else if (active_node_index != G1NUMA::UnknownNodeIndex) {
+ _mismatched[preferred_node_index]++;
+ }
+ _total[preferred_node_index]++;
+
+ return false;
+}
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1NUMA.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1NUMA.hpp
new file mode 100644
index 000000000..30a03dd6d
--- /dev/null
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1NUMA.hpp
@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_GC_G1_NUMA_HPP
+#define SHARE_VM_GC_G1_NUMA_HPP
+
+#include "gc_implementation/g1/g1NUMAStats.hpp"
+#include "gc_implementation/g1/heapRegion.hpp"
+#include "memory/allocation.hpp"
+#include "runtime/os.hpp"
+
+class G1NUMA: public CHeapObj<mtGC> {
+ // Mapping of available node ids to 0-based index which can be used for
+ // fast resource management. I.e. for every node id provides a unique value in
+ // the range from [0, {# of nodes-1}].
+ // For invalid node id, return UnknownNodeIndex.
+ uint* _node_id_to_index_map;
+ // Length of _num_active_node_ids_id to index map.
+ int _len_node_id_to_index_map;
+
+ // Current active node ids.
+ int* _node_ids;
+ // Total number of node ids.
+ uint _num_active_node_ids;
+
+ // HeapRegion size
+ size_t _region_size;
+ // Necessary when touching memory.
+ size_t _page_size;
+
+ // Stores statistic data.
+ G1NUMAStats* _stats;
+
+ size_t region_size() const;
+ size_t page_size() const;
+
+ // Returns node index of the given node id.
+ // Precondition: node_id is an active node id.
+ inline uint index_of_node_id(int node_id) const;
+
+ // Creates node id and node index mapping table of _node_id_to_index_map.
+ void init_node_id_to_index_map(const int* node_ids, uint num_node_ids);
+
+ static G1NUMA* _inst;
+
+ G1NUMA();
+ void initialize(bool use_numa);
+ void initialize_without_numa();
+
+public:
+ static const uint UnknownNodeIndex = UINT_MAX;
+ static const uint AnyNodeIndex = UnknownNodeIndex - 1;
+
+ static G1NUMA* numa() { return _inst; }
+
+ static G1NUMA* create();
+
+ ~G1NUMA();
+
+ // Sets heap region size and page size after those values
+ // are determined at G1CollectedHeap::initialize().
+ void set_region_info(size_t region_size, size_t page_size);
+
+ // Returns active memory node count.
+ uint num_active_nodes() const;
+
+ bool is_enabled() const;
+
+ int numa_id(int index) const;
+
+ // Returns memory node ids
+ const int* node_ids() const;
+
+ // Returns node index of current calling thread.
+ uint index_of_current_thread() const;
+
+ // Returns the preferred index for the given HeapRegion index.
+ // This assumes that HeapRegions are evenly spit, so we can decide preferred index
+ // with the given HeapRegion index.
+ // Result is less than num_active_nodes().
+ uint preferred_node_index_for_index(uint region_index) const;
+
+ // Retrieves node index of the given address.
+ // Result is less than num_active_nodes() or is UnknownNodeIndex.
+ // Precondition: address is in reserved range for heap.
+ uint index_of_address(HeapWord* address) const;
+
+ // If AlwaysPreTouch is enabled, return actual node index via system call.
+ // If disabled, return preferred node index of the given heap region.
+ uint index_for_region(HeapRegion* hr) const;
+
+ // Requests the given memory area to be located at the given node index.
+ void request_memory_on_node(void* aligned_address, size_t size_in_bytes, uint region_index);
+
+ // Returns maximum search depth which is used to limit heap region search iterations.
+ // The number of active nodes, page size and heap region size are considered.
+ uint max_search_depth() const;
+
+ // Update the given phase of requested and allocated node index.
+ void update_statistics(G1NUMAStats::NodeDataItems phase, uint requested_node_index, uint allocated_node_index);
+
+ // Copy all allocated statistics of the given phase and requested node.
+ // Precondition: allocated_stat should have same length of active nodes.
+ void copy_statistics(G1NUMAStats::NodeDataItems phase, uint requested_node_index, size_t* allocated_stat);
+
+ // Print all statistics.
+ void print_statistics() const;
+};
+
+class G1NodeIndexCheckClosure : public HeapRegionClosure {
+ const char* _desc;
+ G1NUMA* _numa;
+ // Records matched count of each node.
+ uint* _matched;
+ // Records mismatched count of each node.
+ uint* _mismatched;
+ // Records total count of each node.
+ // Total = matched + mismatched + unknown.
+ uint* _total;
+
+public:
+ G1NodeIndexCheckClosure(const char* desc, G1NUMA* numa);
+ ~G1NodeIndexCheckClosure();
+
+ bool doHeapRegion(HeapRegion* hr);
+};
+
+#endif // SHARE_VM_GC_G1_NUMA_HPP
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1NUMAStats.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1NUMAStats.cpp
new file mode 100644
index 000000000..cfc3633f8
--- /dev/null
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1NUMAStats.cpp
@@ -0,0 +1,226 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "gc_implementation/g1/g1Log.hpp"
+#include "gc_implementation/g1/g1NUMAStats.hpp"
+#include "memory/allocation.inline.hpp"
+
+double G1NUMAStats::Stat::rate() const {
+ return _requested == 0 ? 0 : (double)_hit / _requested * 100;
+}
+
+G1NUMAStats::NodeDataArray::NodeDataArray(uint num_nodes) {
+ guarantee(num_nodes > 1, err_msg("Number of nodes (%u) should be set", num_nodes));
+
+ // The row represents the number of nodes.
+ _num_column = num_nodes;
+ // +1 for G1MemoryNodeManager::AnyNodeIndex.
+ _num_row = num_nodes + 1;
+
+ _data = NEW_C_HEAP_ARRAY(size_t*, _num_row, mtGC);
+ for (uint row = 0; row < _num_row; row++) {
+ _data[row] = NEW_C_HEAP_ARRAY(size_t, _num_column, mtGC);
+ }
+
+ clear();
+}
+
+G1NUMAStats::NodeDataArray::~NodeDataArray() {
+ for (uint row = 0; row < _num_row; row++) {
+ FREE_C_HEAP_ARRAY(size_t, _data[row], mtGC);
+ }
+ FREE_C_HEAP_ARRAY(size_t*, _data, mtGC);
+}
+
+void G1NUMAStats::NodeDataArray::create_hit_rate(Stat* result) const {
+ size_t requested = 0;
+ size_t hit = 0;
+
+ for (size_t row = 0; row < _num_row; row++) {
+ for (size_t column = 0; column < _num_column; column++) {
+ requested += _data[row][column];
+ if (row == column) {
+ hit += _data[row][column];
+ }
+ }
+ }
+
+ assert(result != NULL, "Invariant");
+ result->_hit = hit;
+ result->_requested = requested;
+}
+
+void G1NUMAStats::NodeDataArray::create_hit_rate(Stat* result, uint req_index) const {
+ size_t requested = 0;
+ size_t hit = _data[req_index][req_index];
+
+ for (size_t column = 0; column < _num_column; column++) {
+ requested += _data[req_index][column];
+ }
+
+ assert(result != NULL, "Invariant");
+ result->_hit = hit;
+ result->_requested = requested;
+}
+
+size_t G1NUMAStats::NodeDataArray::sum(uint req_index) const {
+ size_t sum = 0;
+ for (size_t column = 0; column < _num_column; column++) {
+ sum += _data[req_index][column];
+ }
+
+ return sum;
+}
+
+void G1NUMAStats::NodeDataArray::increase(uint req_index, uint alloc_index) {
+ assert(req_index < _num_row,
+ err_msg("Requested index %u should be less than the row size %u",
+ req_index, _num_row));
+ assert(alloc_index < _num_column,
+ err_msg("Allocated index %u should be less than the column size %u",
+ alloc_index, _num_column));
+ _data[req_index][alloc_index] += 1;
+}
+
+void G1NUMAStats::NodeDataArray::clear() {
+ for (uint row = 0; row < _num_row; row++) {
+ memset((void*)_data[row], 0, sizeof(size_t) * _num_column);
+ }
+}
+
+size_t G1NUMAStats::NodeDataArray::get(uint req_index, uint alloc_index) {
+ return _data[req_index][alloc_index];
+}
+
+void G1NUMAStats::NodeDataArray::copy(uint req_index, size_t* stat) {
+ assert(stat != NULL, "Invariant");
+
+ for (uint column = 0; column < _num_column; column++) {
+ _data[req_index][column] += stat[column];
+ }
+}
+
+G1NUMAStats::G1NUMAStats(const int* node_ids, uint num_node_ids) :
+ _node_ids(node_ids), _num_node_ids(num_node_ids), _node_data() {
+
+ assert(_num_node_ids > 1, err_msg("Should have more than one active memory nodes %u", _num_node_ids));
+
+ for (int i = 0; i < NodeDataItemsSentinel; i++) {
+ _node_data[i] = new NodeDataArray(_num_node_ids);
+ }
+}
+
+G1NUMAStats::~G1NUMAStats() {
+ for (int i = 0; i < NodeDataItemsSentinel; i++) {
+ delete _node_data[i];
+ }
+}
+
+void G1NUMAStats::clear(G1NUMAStats::NodeDataItems phase) {
+ _node_data[phase]->clear();
+}
+
+void G1NUMAStats::update(G1NUMAStats::NodeDataItems phase,
+ uint requested_node_index,
+ uint allocated_node_index) {
+ _node_data[phase]->increase(requested_node_index, allocated_node_index);
+}
+
+void G1NUMAStats::copy(G1NUMAStats::NodeDataItems phase,
+ uint requested_node_index,
+ size_t* allocated_stat) {
+ _node_data[phase]->copy(requested_node_index, allocated_stat);
+}
+
+static const char* phase_to_explanatory_string(G1NUMAStats::NodeDataItems phase) {
+ switch(phase) {
+ case G1NUMAStats::NewRegionAlloc:
+ return "Placement match ratio";
+ case G1NUMAStats::LocalObjProcessAtCopyToSurv:
+ return "Worker task locality match ratio";
+ default:
+ return "";
+ }
+}
+
+#define RATE_TOTAL_FORMAT "%0.0f%% " SIZE_FORMAT "/" SIZE_FORMAT
+
+void G1NUMAStats::print_info(G1NUMAStats::NodeDataItems phase) {
+ if (G1Log::finer()) {
+ Stat result;
+ size_t array_width = _num_node_ids;
+
+ _node_data[phase]->create_hit_rate(&result);
+ gclog_or_tty->print("%s: " RATE_TOTAL_FORMAT " (",
+ phase_to_explanatory_string(phase), result.rate(), result._hit, result._requested);
+
+ for (uint i = 0; i < array_width; i++) {
+ if (i != 0) {
+ gclog_or_tty->print(", ");
+ }
+ _node_data[phase]->create_hit_rate(&result, i);
+ gclog_or_tty->print("%d: " RATE_TOTAL_FORMAT,
+ _node_ids[i], result.rate(), result._hit, result._requested);
+ }
+ gclog_or_tty->print_cr(")");
+ }
+}
+
+void G1NUMAStats::print_mutator_alloc_stat_debug() {
+ uint array_width = _num_node_ids;
+
+ if (G1Log::finer()) {
+ gclog_or_tty->print("Allocated NUMA ids ");
+ for (uint i = 0; i < array_width; i++) {
+ gclog_or_tty->print("%8d", _node_ids[i]);
+ }
+ gclog_or_tty->print_cr(" Total");
+
+ gclog_or_tty->print("Requested NUMA id ");
+ for (uint req = 0; req < array_width; req++) {
+ gclog_or_tty->print("%3d ", _node_ids[req]);
+ for (uint alloc = 0; alloc < array_width; alloc++) {
+ gclog_or_tty->print(SIZE_FORMAT_W(8), _node_data[NewRegionAlloc]->get(req, alloc));
+ }
+ gclog_or_tty->print(SIZE_FORMAT_W(8), _node_data[NewRegionAlloc]->sum(req));
+ gclog_or_tty->print_cr(" ");
+ // Add padding to align with the string 'Requested NUMA id'.
+ gclog_or_tty->print(" ");
+ }
+ gclog_or_tty->print("Any ");
+ for (uint alloc = 0; alloc < array_width; alloc++) {
+ gclog_or_tty->print(SIZE_FORMAT_W(8), _node_data[NewRegionAlloc]->get(array_width, alloc));
+ }
+ gclog_or_tty->print(SIZE_FORMAT_W(8), _node_data[NewRegionAlloc]->sum(array_width));
+ gclog_or_tty->print_cr(" ");
+ }
+}
+
+void G1NUMAStats::print_statistics() {
+ print_info(NewRegionAlloc);
+ print_mutator_alloc_stat_debug();
+
+ print_info(LocalObjProcessAtCopyToSurv);
+}
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1NUMAStats.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1NUMAStats.hpp
new file mode 100644
index 000000000..fba9442c8
--- /dev/null
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1NUMAStats.hpp
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_GC_G1_NODE_TIMES_HPP
+#define SHARE_VM_GC_G1_NODE_TIMES_HPP
+
+#include "memory/allocation.hpp"
+
+// Manages statistics of multi nodes.
+class G1NUMAStats : public CHeapObj<mtGC> {
+ struct Stat {
+ // Hit count: if requested id equals to returned id.
+ size_t _hit;
+ // Total request count
+ size_t _requested;
+
+ // Hit count / total request count
+ double rate() const;
+ };
+
+ // Holds data array which has a size of (node count) * (node count + 1) to
+ // represent request node * allocated node. The request node includes any node case.
+ // All operations are NOT thread-safe.
+ // The row index indicates a requested node index while the column node index
+ // indicates an allocated node index. The last row is for any node index request.
+ // E.g. (req, alloc) = (0,0) (1,0) (2,0) (0,1) (Any, 3) (0,2) (0,3) (0,3) (3,3)
+ // Allocated node index 0 1 2 3 Total
+ // Requested node index 0 1 1 1 2 5
+ // 1 1 0 0 0 1
+ // 2 1 0 0 0 1
+ // 3 0 0 0 1 1
+ // Any 0 0 0 1 1
+ class NodeDataArray : public CHeapObj<mtGC> {
+ // The number of nodes.
+ uint _num_column;
+ // The number of nodes + 1 (for any node request)
+ uint _num_row;
+ // 2-dimension array that holds count of allocated / requested node index.
+ size_t** _data;
+
+ public:
+ NodeDataArray(uint num_nodes);
+ ~NodeDataArray();
+
+ // Create Stat result of hit count, requested count and hit rate.
+ // The result is copied to the given result parameter.
+ void create_hit_rate(Stat* result) const;
+ // Create Stat result of hit count, requested count and hit rate of the given index.
+ // The result is copied to the given result parameter.
+ void create_hit_rate(Stat* result, uint req_index) const;
+ // Return sum of the given index.
+ size_t sum(uint req_index) const;
+ // Increase at the request / allocated index.
+ void increase(uint req_index, uint alloc_index);
+ // Clear all data.
+ void clear();
+ // Return current value of the given request / allocated index.
+ size_t get(uint req_index, uint alloc_index);
+ // Copy values of the given request index.
+ void copy(uint req_index, size_t* stat);
+ };
+
+public:
+ enum NodeDataItems {
+ // Statistics of a new region allocation.
+ NewRegionAlloc,
+ // Statistics of object processing during copy to survivor region.
+ LocalObjProcessAtCopyToSurv,
+ NodeDataItemsSentinel
+ };
+
+private:
+ const int* _node_ids;
+ uint _num_node_ids;
+
+ NodeDataArray* _node_data[NodeDataItemsSentinel];
+
+ void print_info(G1NUMAStats::NodeDataItems phase);
+
+ void print_mutator_alloc_stat_debug();
+
+public:
+ G1NUMAStats(const int* node_ids, uint num_node_ids);
+ ~G1NUMAStats();
+
+ void clear(G1NUMAStats::NodeDataItems phase);
+
+ // Update the given phase of requested and allocated node index.
+ void update(G1NUMAStats::NodeDataItems phase, uint requested_node_index, uint allocated_node_index);
+
+ // Copy all allocated statistics of the given phase and requested node.
+ // Precondition: allocated_stat should have same length of active nodes.
+ void copy(G1NUMAStats::NodeDataItems phase, uint requested_node_index, size_t* allocated_stat);
+
+ void print_statistics();
+};
+
+#endif // SHARE_VM_GC_G1_NODE_TIMES_HPP
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.cpp
index 075217d60..7bc84bfe8 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.cpp
@@ -135,6 +135,11 @@ char* G1PageBasedVirtualSpace::page_start(size_t index) const {
return _low_boundary + index * _page_size;
}
+size_t G1PageBasedVirtualSpace::page_size() const {
+ assert(_page_size > 0, "Page size is not yet initialized.");
+ return _page_size;
+}
+
bool G1PageBasedVirtualSpace::is_after_last_page(size_t index) const {
guarantee(index <= _committed.size(),
err_msg("Given boundary page " SIZE_FORMAT " is beyond managed page count " SIZE_FORMAT, index, _committed.size()));
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.hpp
index 4d0b7b21b..f171bfcf1 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1PageBasedVirtualSpace.hpp
@@ -90,8 +90,6 @@ class G1PageBasedVirtualSpace VALUE_OBJ_CLASS_SPEC {
// Returns the index of the page which contains the given address.
uintptr_t addr_to_page_index(char* addr) const;
- // Returns the address of the given page index.
- char* page_start(size_t index) const;
// Is the given page index the last page?
bool is_last_page(size_t index) const { return index == (_committed.size() - 1); }
@@ -143,6 +141,10 @@ class G1PageBasedVirtualSpace VALUE_OBJ_CLASS_SPEC {
void check_for_contiguity() PRODUCT_RETURN;
+ // Returns the address of the given page index.
+ char* page_start(size_t index) const;
+ size_t page_size() const;
+
// Debugging
void print_on(outputStream* out) PRODUCT_RETURN;
void print();
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.cpp
index 394f20e82..a095abaf6 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.cpp
@@ -40,6 +40,8 @@ G1ParScanThreadState::G1ParScanThreadState(G1CollectedHeap* g1h, uint queue_num,
_term_attempts(0),
_tenuring_threshold(g1h->g1_policy()->tenuring_threshold()),
_age_table(false), _scanner(g1h, rp),
+ _numa(g1h->numa()),
+ _obj_alloc_stat(NULL),
_strong_roots_time(0), _term_time(0) {
_scanner.set_par_scan_thread_state(this);
// we allocate G1YoungSurvRateNumRegions plus one entries, since
@@ -60,19 +62,20 @@ G1ParScanThreadState::G1ParScanThreadState(G1CollectedHeap* g1h, uint queue_num,
_g1_par_allocator = G1ParGCAllocator::create_allocator(_g1h);
- _dest[InCSetState::NotInCSet] = InCSetState::NotInCSet;
// The dest for Young is used when the objects are aged enough to
// need to be moved to the next space.
_dest[InCSetState::Young] = InCSetState::Old;
_dest[InCSetState::Old] = InCSetState::Old;
_start = os::elapsedTime();
+ initialize_numa_stats();
}
G1ParScanThreadState::~G1ParScanThreadState() {
_g1_par_allocator->retire_alloc_buffers();
delete _g1_par_allocator;
FREE_C_HEAP_ARRAY(size_t, _surviving_young_words_base, mtGC);
+ FREE_C_HEAP_ARRAY(size_t, _obj_alloc_stat, mtGC);
}
void
@@ -162,7 +165,8 @@ void G1ParScanThreadState::trim_queue() {
HeapWord* G1ParScanThreadState::allocate_in_next_plab(InCSetState const state,
InCSetState* dest,
size_t word_sz,
- AllocationContext_t const context) {
+ AllocationContext_t const context,
+ uint node_index) {
assert(state.is_in_cset_or_humongous(), err_msg("Unexpected state: " CSETSTATE_FORMAT, state.value()));
assert(dest->is_in_cset_or_humongous(), err_msg("Unexpected dest: " CSETSTATE_FORMAT, dest->value()));
@@ -170,7 +174,7 @@ HeapWord* G1ParScanThreadState::allocate_in_next_plab(InCSetState const state,
// let's keep the logic here simple. We can generalize it when necessary.
if (dest->is_young()) {
HeapWord* const obj_ptr = _g1_par_allocator->allocate(InCSetState::Old,
- word_sz, context);
+ word_sz, context, node_index);
if (obj_ptr == NULL) {
return NULL;
}
@@ -190,8 +194,8 @@ HeapWord* G1ParScanThreadState::allocate_in_next_plab(InCSetState const state,
void G1ParScanThreadState::report_promotion_event(InCSetState const dest_state,
oop const old, size_t word_sz, uint age,
HeapWord * const obj_ptr,
- AllocationContext_t context) const {
- ParGCAllocBuffer* alloc_buf = _g1_par_allocator->alloc_buffer(dest_state, context);
+ AllocationContext_t context, uint node_index) const {
+ ParGCAllocBuffer* alloc_buf = _g1_par_allocator->alloc_buffer(dest_state, context, node_index);
if (alloc_buf->contains(obj_ptr)) {
_g1h->_gc_tracer_stw->report_promotion_in_new_plab_event(old->klass(), word_sz, age,
dest_state.value() == InCSetState::Old,
@@ -226,23 +230,25 @@ oop G1ParScanThreadState::copy_to_survivor_space(InCSetState const state,
uint age = 0;
InCSetState dest_state = next_state(state, old_mark, age);
- HeapWord* obj_ptr = _g1_par_allocator->plab_allocate(dest_state, word_sz, context);
+ uint node_index = from_region->node_index();
+ HeapWord* obj_ptr = _g1_par_allocator->plab_allocate(dest_state, word_sz, context, node_index);
// PLAB allocations should succeed most of the time, so we'll
// normally check against NULL once and that's it.
if (obj_ptr == NULL) {
- obj_ptr = _g1_par_allocator->allocate_direct_or_new_plab(dest_state, word_sz, context);
+ obj_ptr = _g1_par_allocator->allocate_direct_or_new_plab(dest_state, word_sz, context, node_index);
if (obj_ptr == NULL) {
- obj_ptr = allocate_in_next_plab(state, &dest_state, word_sz, context);
+ obj_ptr = allocate_in_next_plab(state, &dest_state, word_sz, context, node_index);
if (obj_ptr == NULL) {
// This will either forward-to-self, or detect that someone else has
// installed a forwarding pointer.
return _g1h->handle_evacuation_failure_par(this, old);
}
}
+ update_numa_stats(node_index);
if (_g1h->_gc_tracer_stw->should_report_promotion_events()) {
// The events are checked individually as part of the actual commit
- report_promotion_event(dest_state, old, word_sz, age, obj_ptr, context);
+ report_promotion_event(dest_state, old, word_sz, age, obj_ptr, context, node_index);
}
}
@@ -252,7 +258,7 @@ oop G1ParScanThreadState::copy_to_survivor_space(InCSetState const state,
if (_g1h->evacuation_should_fail()) {
// Doing this after all the allocation attempts also tests the
// undo_allocation() method too.
- _g1_par_allocator->undo_allocation(dest_state, obj_ptr, word_sz, context);
+ _g1_par_allocator->undo_allocation(dest_state, obj_ptr, word_sz, context, node_index);
return _g1h->handle_evacuation_failure_par(this, old);
}
#endif // !PRODUCT
@@ -314,7 +320,49 @@ oop G1ParScanThreadState::copy_to_survivor_space(InCSetState const state,
}
return obj;
} else {
- _g1_par_allocator->undo_allocation(dest_state, obj_ptr, word_sz, context);
+ _g1_par_allocator->undo_allocation(dest_state, obj_ptr, word_sz, context, node_index);
return forward_ptr;
}
}
+
+G1ParScanThreadState* G1ParScanThreadStateSet::state_for_worker(uint worker_id, ReferenceProcessor* rp) {
+ assert(worker_id < _n_workers, "out of bounds access");
+ if (_states[worker_id] == NULL) {
+ _states[worker_id] =
+ new G1ParScanThreadState(_g1h, worker_id, rp);
+ }
+ return _states[worker_id];
+}
+
+void G1ParScanThreadStateSet::flush() {
+ assert(!_flushed, "thread local state from the per thread states should be flushed once");
+
+ for (uint worker_index = 0; worker_index < _n_workers; ++worker_index) {
+ G1ParScanThreadState* pss = _states[worker_index];
+
+ if (pss == NULL) {
+ continue;
+ }
+
+ pss->flush_numa_stats();
+ delete pss;
+ _states[worker_index] = NULL;
+ }
+ _flushed = true;
+}
+
+G1ParScanThreadStateSet::G1ParScanThreadStateSet(G1CollectedHeap* g1h,
+ uint n_workers) :
+ _g1h(g1h),
+ _states(NEW_C_HEAP_ARRAY(G1ParScanThreadState*, n_workers, mtGC)),
+ _n_workers(n_workers),
+ _flushed(false) {
+ for (uint i = 0; i < n_workers; ++i) {
+ _states[i] = NULL;
+ }
+}
+
+G1ParScanThreadStateSet::~G1ParScanThreadStateSet() {
+ assert(_flushed, "thread local state from the per thread states should have been flushed");
+ FREE_C_HEAP_ARRAY(G1ParScanThreadState*, _states, mtGC);
+}
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.hpp
index 990b71d31..60c00b178 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.hpp
@@ -38,7 +38,7 @@
class HeapRegion;
class outputStream;
-class G1ParScanThreadState : public StackObj {
+class G1ParScanThreadState : public CHeapObj<mtGC> {
private:
G1CollectedHeap* _g1h;
RefToScanQueue* _refs;
@@ -91,6 +91,13 @@ class G1ParScanThreadState : public StackObj {
return _dest[original.value()];
}
+ G1NUMA* _numa;
+
+ // Records how many object allocations happened at each node during copy to survivor.
+ // Only starts recording when log of gc+heap+numa is enabled and its data is
+ // transferred when flushed.
+ size_t* _obj_alloc_stat;
+
public:
G1ParScanThreadState(G1CollectedHeap* g1h, uint queue_num, ReferenceProcessor* rp);
~G1ParScanThreadState();
@@ -208,13 +215,19 @@ class G1ParScanThreadState : public StackObj {
HeapWord* allocate_in_next_plab(InCSetState const state,
InCSetState* dest,
size_t word_sz,
- AllocationContext_t const context);
+ AllocationContext_t const context,
+ uint node_index);
void report_promotion_event(InCSetState const dest_state,
oop const old, size_t word_sz, uint age,
- HeapWord * const obj_ptr, AllocationContext_t context) const;
+ HeapWord * const obj_ptr, AllocationContext_t context, uint node_index) const;
inline InCSetState next_state(InCSetState const state, markOop const m, uint& age);
+
+ // NUMA statistics related methods.
+ inline void initialize_numa_stats();
+ inline void update_numa_stats(uint node_index);
+
public:
oop copy_to_survivor_space(InCSetState const state, oop const obj, markOop const old_mark);
@@ -222,6 +235,22 @@ class G1ParScanThreadState : public StackObj {
void trim_queue();
inline void steal_and_trim_queue(RefToScanQueueSet *task_queues);
+ inline void flush_numa_stats();
+};
+
+class G1ParScanThreadStateSet : public StackObj {
+ G1CollectedHeap* _g1h;
+ G1ParScanThreadState** _states;
+ uint _n_workers;
+ bool _flushed;
+
+ public:
+ G1ParScanThreadStateSet(G1CollectedHeap* g1h,
+ uint n_workers);
+ ~G1ParScanThreadStateSet();
+
+ void flush();
+ G1ParScanThreadState* state_for_worker(uint worker_id, ReferenceProcessor* rp);
};
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1PARSCANTHREADSTATE_HPP
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.inline.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.inline.hpp
index 7dedb1517..b3dc22b30 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.inline.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.inline.hpp
@@ -142,5 +142,27 @@ void G1ParScanThreadState::steal_and_trim_queue(RefToScanQueueSet *task_queues)
}
}
+void G1ParScanThreadState::initialize_numa_stats() {
+ if (_numa->is_enabled()) {
+ uint num_nodes = _numa->num_active_nodes();
+ // Record only if there are multiple active nodes.
+ _obj_alloc_stat = NEW_C_HEAP_ARRAY(size_t, num_nodes, mtGC);
+ memset(_obj_alloc_stat, 0, sizeof(size_t) * num_nodes);
+ }
+}
+
+void G1ParScanThreadState::flush_numa_stats() {
+ if (_obj_alloc_stat != NULL) {
+ uint node_index = _numa->index_of_current_thread();
+ _numa->copy_statistics(G1NUMAStats::LocalObjProcessAtCopyToSurv, node_index, _obj_alloc_stat);
+ }
+}
+
+void G1ParScanThreadState::update_numa_stats(uint node_index) {
+ if (_obj_alloc_stat != NULL) {
+ _obj_alloc_stat[node_index]++;
+ }
+}
+
#endif /* SHARE_VM_GC_IMPLEMENTATION_G1_G1PARSCANTHREADSTATE_INLINE_HPP */
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.cpp b/hotspot/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.cpp
index f07c27107..27ea0d7a1 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.cpp
@@ -24,6 +24,7 @@
#include "precompiled.hpp"
#include "gc_implementation/g1/g1BiasedArray.hpp"
+#include "gc_implementation/g1/g1NUMA.hpp"
#include "gc_implementation/g1/g1RegionToSpaceMapper.hpp"
#include "memory/allocation.inline.hpp"
#include "runtime/mutex.hpp"
@@ -40,6 +41,7 @@ G1RegionToSpaceMapper::G1RegionToSpaceMapper(ReservedSpace rs,
_storage(rs, used_size, page_size),
_region_granularity(region_granularity),
_listener(NULL),
+ _memory_type(type),
_commit_map() {
guarantee(is_power_of_2(page_size), "must be");
guarantee(is_power_of_2(region_granularity), "must be");
@@ -71,6 +73,14 @@ class G1RegionsLargerThanCommitSizeMapper : public G1RegionToSpaceMapper {
virtual void commit_regions(uint start_idx, size_t num_regions) {
bool zero_filled = _storage.commit((size_t)start_idx * _pages_per_region, num_regions * _pages_per_region);
_commit_map.par_set_range(start_idx, start_idx + num_regions, BitMap::unknown_range);
+ if (_memory_type == mtJavaHeap) {
+ for (uint region_index = start_idx; region_index < start_idx + num_regions; region_index++ ) {
+ void* address = _storage.page_start(region_index * _pages_per_region);
+ size_t size_in_bytes = _storage.page_size() * _pages_per_region;
+ G1NUMA::numa()->request_memory_on_node(address, size_in_bytes, region_index);
+ }
+ }
+
fire_on_commit(start_idx, num_regions, zero_filled);
}
@@ -106,7 +116,7 @@ class G1RegionsSmallerThanCommitSizeMapper : public G1RegionToSpaceMapper {
size_t commit_factor,
MemoryType type) :
G1RegionToSpaceMapper(rs, actual_size, page_size, alloc_granularity, type),
- _par_lock(Mutex::leaf, "G1RegionsSmallerThanCommitSizeMapper par lock"),
+ _par_lock(Mutex::leaf, "G1RegionsSmallerThanCommitSizeMapper par lock", true),
_regions_per_page((page_size * commit_factor) / alloc_granularity), _refcounts() {
guarantee((page_size * commit_factor) >= alloc_granularity, "allocation granularity smaller than commit granularity");
@@ -123,6 +133,11 @@ class G1RegionsSmallerThanCommitSizeMapper : public G1RegionToSpaceMapper {
bool zero_filled = false;
if (old_refcount == 0) {
zero_filled = _storage.commit(idx, 1);
+ if (_memory_type == mtJavaHeap) {
+ void* address = _storage.page_start(idx);
+ size_t size_in_bytes = _storage.page_size();
+ G1NUMA::numa()->request_memory_on_node(address, size_in_bytes, i);
+ }
}
_refcounts.set_by_index(idx, old_refcount + 1);
_commit_map.set_bit(i);
diff --git a/hotspot/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.hpp b/hotspot/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.hpp
index 6623a37f9..6eee4d309 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RegionToSpaceMapper.hpp
@@ -51,6 +51,8 @@ class G1RegionToSpaceMapper : public CHeapObj<mtGC> {
// Mapping management
BitMap _commit_map;
+ MemoryType _memory_type;
+
G1RegionToSpaceMapper(ReservedSpace rs, size_t used_size, size_t page_size, size_t region_granularity, MemoryType type);
void fire_on_commit(uint start_idx, size_t num_regions, bool zero_filled);
diff --git a/hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp b/hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp
index facd28948..131cdeacd 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp
@@ -26,6 +26,7 @@
#include "code/nmethod.hpp"
#include "gc_implementation/g1/g1BlockOffsetTable.inline.hpp"
#include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
+#include "gc_implementation/g1/g1NUMA.hpp"
#include "gc_implementation/g1/g1OopClosures.inline.hpp"
#include "gc_implementation/g1/heapRegion.inline.hpp"
#include "gc_implementation/g1/heapRegionBounds.inline.hpp"
@@ -313,7 +314,7 @@ HeapRegion::HeapRegion(uint hrm_index,
_in_uncommit_list(false),
_young_index_in_cset(-1), _surv_rate_group(NULL), _age_index(-1),
_rem_set(NULL), _recorded_rs_length(0), _predicted_elapsed_time_ms(0),
- _predicted_bytes_to_copy(0)
+ _predicted_bytes_to_copy(0), _node_index(G1NUMA::UnknownNodeIndex)
{
_rem_set = new HeapRegionRemSet(sharedOffsetArray, this);
assert(HeapRegionRemSet::num_par_rem_sets() > 0, "Invariant.");
@@ -704,6 +705,15 @@ void HeapRegion::print_on(outputStream* st) const {
st->print(" TS %5d", _gc_time_stamp);
st->print(" PTAMS " PTR_FORMAT " NTAMS " PTR_FORMAT,
prev_top_at_mark_start(), next_top_at_mark_start());
+ if (UseNUMA) {
+ G1NUMA* numa = G1NUMA::numa();
+ if (node_index() < numa->num_active_nodes()) {
+ st->print("|%d", numa->numa_id(node_index()));
+ } else {
+ st->print("|-");
+ }
+ }
+ st->print_cr(" ");
G1OffsetTableContigSpace::print_on(st);
}
diff --git a/hotspot/src/share/vm/gc_implementation/g1/heapRegion.hpp b/hotspot/src/share/vm/gc_implementation/g1/heapRegion.hpp
index 656d605ef..bc9527a87 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegion.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegion.hpp
@@ -295,7 +295,7 @@ class HeapRegion: public G1OffsetTableContigSpace {
// The RSet length that was added to the total value
// for the collection set.
size_t _recorded_rs_length;
-
+ uint _node_index;
// The predicted elapsed time that was added to total value
// for the collection set.
double _predicted_elapsed_time_ms;
@@ -768,6 +768,9 @@ class HeapRegion: public G1OffsetTableContigSpace {
// the strong code roots list for this region
void strong_code_roots_do(CodeBlobClosure* blk) const;
+ uint node_index() const { return _node_index; }
+ void set_node_index(uint node_index) { _node_index = node_index; }
+
// Verify that the entries on the strong code root list for this
// region are live and include at least one pointer into this region.
void verify_strong_code_roots(VerifyOption vo, bool* failures) const;
diff --git a/hotspot/src/share/vm/gc_implementation/g1/heapRegionManager.cpp b/hotspot/src/share/vm/gc_implementation/g1/heapRegionManager.cpp
index 842550d21..6ad85596d 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegionManager.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionManager.cpp
@@ -27,6 +27,7 @@
#include "gc_implementation/g1/heapRegionManager.inline.hpp"
#include "gc_implementation/g1/heapRegionSet.inline.hpp"
#include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
+#include "gc_implementation/g1/g1NUMA.hpp"
#include "gc_implementation/g1/concurrentG1Refine.hpp"
#include "memory/allocation.hpp"
@@ -72,6 +73,34 @@ bool HeapRegionManager::can_expand(uint region) const {
return !_available_map.at(region);
}
+HeapRegion* HeapRegionManager::allocate_free_region(bool is_old, uint requested_node_index) {
+ HeapRegion* hr = NULL;
+ bool from_head = is_old;
+ G1NUMA* numa = G1NUMA::numa();
+
+ if (requested_node_index != G1NUMA::AnyNodeIndex && numa->is_enabled()) {
+ // Try to allocate with requested node index.
+ hr = _free_list.remove_region_with_node_index(from_head, requested_node_index);
+ }
+
+ if (hr == NULL) {
+ // If there's a single active node or we did not get a region from our requested node,
+ // try without requested node index.
+ hr = _free_list.remove_region(from_head);
+ }
+
+ if (hr != NULL) {
+ assert(hr->next() == NULL, "Single region should not have next");
+ assert(is_available(hr->hrm_index()), "Must be committed");
+
+ if (numa->is_enabled() && hr->node_index() < numa->num_active_nodes()) {
+ numa->update_statistics(G1NUMAStats::NewRegionAlloc, requested_node_index, hr->node_index());
+ }
+ }
+
+ return hr;
+}
+
#ifdef ASSERT
bool HeapRegionManager::is_free(HeapRegion* hr) const {
return _free_list.contains(hr);
@@ -107,6 +136,10 @@ void HeapRegionManager::commit_regions(uint index, size_t num_regions) {
void HeapRegionManager::uncommit_regions(uint start, size_t num_regions) {
guarantee(num_regions >= 1, err_msg("Need to specify at least one region to uncommit, tried to uncommit zero regions at %u", start));
guarantee(_num_committed >= num_regions, "pre-condition");
+ // Reset node index to distinguish with committed regions.
+ for (uint i = start; i < start + num_regions; i++) {
+ at(i)->set_node_index(G1NUMA::UnknownNodeIndex);
+ }
// Print before uncommitting.
if (G1CollectedHeap::heap()->hr_printer()->is_active()) {
@@ -155,6 +188,7 @@ void HeapRegionManager::make_regions_available(uint start, uint num_regions) {
MemRegion mr(bottom, bottom + HeapRegion::GrainWords);
hr->initialize(mr);
+ hr->set_node_index(G1NUMA::numa()->index_for_region(hr));
insert_into_free_list(at(i));
}
}
@@ -204,6 +238,35 @@ uint HeapRegionManager::expand_at(uint start, uint num_regions) {
return expanded;
}
+uint HeapRegionManager::expand_on_preferred_node(uint preferred_index) {
+ uint expand_candidate = UINT_MAX;
+ for (uint i = 0; i < max_length(); i++) {
+ if (is_available(i)) {
+ // Already in use continue
+ continue;
+ }
+ // Always save the candidate so we can expand later on.
+ expand_candidate = i;
+ if (is_on_preferred_index(expand_candidate, preferred_index)) {
+ // We have found a candidate on the preffered node, break.
+ break;
+ }
+ }
+
+ if (expand_candidate == UINT_MAX) {
+ // No regions left, expand failed.
+ return 0;
+ }
+
+ make_regions_available(expand_candidate, 1);
+ return 1;
+}
+
+bool HeapRegionManager::is_on_preferred_index(uint region_index, uint preferred_node_index) {
+ uint region_node_index = G1NUMA::numa()->preferred_node_index_for_index(region_index);
+ return region_node_index == preferred_node_index;
+}
+
uint HeapRegionManager::find_contiguous(size_t num, bool empty_only) {
uint found = 0;
size_t length_found = 0;
diff --git a/hotspot/src/share/vm/gc_implementation/g1/heapRegionManager.hpp b/hotspot/src/share/vm/gc_implementation/g1/heapRegionManager.hpp
index 715122181..a06fa4f56 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegionManager.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionManager.hpp
@@ -120,6 +120,8 @@ class HeapRegionManager: public CHeapObj<mtGC> {
// the heap. Returns the length of the sequence found. If this value is zero, no
// sequence could be found, otherwise res_idx contains the start index of this range.
uint find_empty_from_idx_reverse(uint start_idx, uint* res_idx) const;
+ // Checks the G1MemoryNodeManager to see if this region is on the preferred node.
+ bool is_on_preferred_index(uint region_index, uint preferred_node_index);
// Allocate a new HeapRegion for the given index.
HeapRegion* new_heap_region(uint hrm_index);
#ifdef ASSERT
@@ -175,15 +177,7 @@ public:
_free_list.add_ordered(list);
}
- HeapRegion* allocate_free_region(bool is_old) {
- HeapRegion* hr = _free_list.remove_region(is_old);
-
- if (hr != NULL) {
- assert(hr->next() == NULL, "Single region should not have next");
- assert(is_available(hr->hrm_index()), "Must be committed");
- }
- return hr;
- }
+ virtual HeapRegion* allocate_free_region(bool is_old, uint requested_node_index);
inline void allocate_free_regions_starting_at(uint first, uint num_regions);
@@ -197,6 +191,10 @@ public:
return _free_list.length();
}
+ uint num_free_regions(uint node_index) const {
+ return _free_list.length(node_index);
+ }
+
size_t total_capacity_bytes() const {
return num_free_regions() * HeapRegion::GrainBytes;
}
@@ -225,6 +223,9 @@ public:
// this.
uint expand_at(uint start, uint num_regions);
+ // Try to expand on the given node index.
+ virtual uint expand_on_preferred_node(uint node_index);
+
// Find a contiguous set of empty regions of length num. Returns the start index of
// that set, or G1_NO_HRM_INDEX.
uint find_contiguous_only_empty(size_t num) { return find_contiguous(num, true); }
diff --git a/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.cpp b/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.cpp
index 09d12fd3f..881bab784 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.cpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.cpp
@@ -24,6 +24,7 @@
#include "precompiled.hpp"
#include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
+#include "gc_implementation/g1/g1NUMA.hpp"
#include "gc_implementation/g1/heapRegionRemSet.hpp"
#include "gc_implementation/g1/heapRegionSet.inline.hpp"
@@ -100,6 +101,12 @@ HeapRegionSetBase::HeapRegionSetBase(const char* name, bool humongous, bool free
_count()
{ }
+FreeRegionList::FreeRegionList(const char* name, HRSMtSafeChecker* mt_safety_checker):
+ HeapRegionSetBase(name, false /* humongous */, true /* empty */, mt_safety_checker),
+ _node_info(G1NUMA::numa()->is_enabled() ? new NodeInfo() : NULL) {
+ clear();
+}
+
void FreeRegionList::set_unrealistically_long_length(uint len) {
guarantee(_unrealistically_long_length == 0, "should only be set once");
_unrealistically_long_length = len;
@@ -127,6 +134,7 @@ void FreeRegionList::remove_all(bool uncommit) {
OrderAccess::storestore();
curr->set_uncommit_list(false);
}
+ decrease_length(curr->node_index());
curr = next;
}
clear();
@@ -144,6 +152,9 @@ void FreeRegionList::add_ordered(FreeRegionList* from_list) {
if (from_list->is_empty()) {
return;
}
+ if (_node_info != NULL && from_list->_node_info != NULL) {
+ _node_info->add(from_list->_node_info);
+ }
#ifdef ASSERT
FreeRegionListIterator iter(from_list);
@@ -246,6 +257,7 @@ void FreeRegionList::remove_starting_at(HeapRegion* first, uint num_regions) {
remove(curr);
count++;
+ decrease_length(curr->node_index());
curr = next;
}
@@ -278,6 +290,9 @@ void FreeRegionList::clear() {
_head = NULL;
_tail = NULL;
_last = NULL;
+ if (_node_info!= NULL) {
+ _node_info->clear();
+ }
}
void FreeRegionList::print_on(outputStream* out, bool print_contents) {
@@ -454,6 +469,29 @@ void HumongousRegionSetMtSafeChecker::check() {
}
}
+FreeRegionList::NodeInfo::NodeInfo() : _numa(G1NUMA::numa()), _length_of_node(NULL),
+ _num_nodes(_numa->num_active_nodes()) {
+ assert(UseNUMA, "Invariant");
+
+ _length_of_node = NEW_C_HEAP_ARRAY(uint, _num_nodes, mtGC);
+}
+
+FreeRegionList::NodeInfo::~NodeInfo() {
+ FREE_C_HEAP_ARRAY(uint, _length_of_node, mtGC);
+}
+
+void FreeRegionList::NodeInfo::clear() {
+ for (uint i = 0; i < _num_nodes; ++i) {
+ _length_of_node[i] = 0;
+ }
+}
+
+void FreeRegionList::NodeInfo::add(NodeInfo* info) {
+ for (uint i = 0; i < _num_nodes; ++i) {
+ _length_of_node[i] += info->_length_of_node[i];
+ }
+}
+
void FreeRegionList_test() {
FreeRegionList l("test");
diff --git a/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.hpp b/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.hpp
index ede3136d5..42f0bd4d0 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.hpp
@@ -197,22 +197,45 @@ public:
// add / remove one region at a time or concatenate two lists.
class FreeRegionListIterator;
+class G1NUMA;
class FreeRegionList : public HeapRegionSetBase {
friend class FreeRegionListIterator;
private:
+ // This class is only initialized if there are multiple active nodes.
+ class NodeInfo : public CHeapObj<mtGC> {
+ G1NUMA* _numa;
+ uint* _length_of_node;
+ uint _num_nodes;
+
+ public:
+ NodeInfo();
+ ~NodeInfo();
+
+ inline void increase_length(uint node_index);
+ inline void decrease_length(uint node_index);
+
+ inline uint length(uint index) const;
+
+ void clear();
+
+ void add(NodeInfo* info);
+ };
+
HeapRegion* _head;
HeapRegion* _tail;
// _last is used to keep track of where we added an element the last
// time. It helps to improve performance when adding several ordered items in a row.
HeapRegion* _last;
-
+ NodeInfo* _node_info;
static uint _unrealistically_long_length;
inline HeapRegion* remove_from_head_impl();
inline HeapRegion* remove_from_tail_impl();
+ inline void increase_length(uint node_index);
+ inline void decrease_length(uint node_index);
protected:
virtual void fill_in_ext_msg_extra(hrs_ext_msg* msg);
@@ -221,9 +244,12 @@ protected:
virtual void clear();
public:
- FreeRegionList(const char* name, HRSMtSafeChecker* mt_safety_checker = NULL):
- HeapRegionSetBase(name, false /* humongous */, true /* empty */, mt_safety_checker) {
- clear();
+ FreeRegionList(const char* name, HRSMtSafeChecker* mt_safety_checker = NULL);
+
+ ~FreeRegionList() {
+ if (_node_info != NULL) {
+ delete _node_info;
+ }
}
void verify_list();
@@ -244,6 +270,10 @@ public:
// Removes from head or tail based on the given argument.
HeapRegion* remove_region(bool from_head);
+ HeapRegion* remove_region_with_node_index(bool from_head,
+ uint requested_node_index);
+
+
// Merge two ordered lists. The result is also ordered. The order is
// determined by hrm_index.
void add_ordered(FreeRegionList* from_list);
@@ -260,6 +290,9 @@ public:
virtual void verify();
+ using HeapRegionSetBase::length;
+ uint length(uint node_index) const;
+
virtual void print_on(outputStream* out, bool print_contents = false);
};
diff --git a/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.inline.hpp b/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.inline.hpp
index f1fce751a..5ce306288 100644
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.inline.hpp
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionSet.inline.hpp
@@ -25,6 +25,7 @@
#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP
#define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP
+#include "gc_implementation/g1/g1NUMA.hpp"
#include "gc_implementation/g1/heapRegionSet.hpp"
inline void HeapRegionSetBase::add(HeapRegion* hr) {
@@ -94,6 +95,7 @@ inline void FreeRegionList::add_ordered(HeapRegion* hr) {
_head = hr;
}
_last = hr;
+ increase_length(hr->node_index());
}
inline HeapRegion* FreeRegionList::remove_from_head_impl() {
@@ -145,8 +147,106 @@ inline HeapRegion* FreeRegionList::remove_region(bool from_head) {
// remove() will verify the region and check mt safety.
remove(hr);
+ decrease_length(hr->node_index());
return hr;
}
+inline HeapRegion* FreeRegionList::remove_region_with_node_index(bool from_head,
+ uint requested_node_index) {
+ assert(UseNUMA, "Invariant");
+
+ const uint max_search_depth = G1NUMA::numa()->max_search_depth();
+ HeapRegion* cur;
+
+ // Find the region to use, searching from _head or _tail as requested.
+ size_t cur_depth = 0;
+ if (from_head) {
+ for (cur = _head;
+ cur != NULL && cur_depth < max_search_depth;
+ cur = cur->next(), ++cur_depth) {
+ if (requested_node_index == cur->node_index()) {
+ break;
+ }
+ }
+ } else {
+ for (cur = _tail;
+ cur != NULL && cur_depth < max_search_depth;
+ cur = cur->prev(), ++cur_depth) {
+ if (requested_node_index == cur->node_index()) {
+ break;
+ }
+ }
+ }
+
+ // Didn't find a region to use.
+ if (cur == NULL || cur_depth >= max_search_depth) {
+ return NULL;
+ }
+
+ // Splice the region out of the list.
+ HeapRegion* prev = cur->prev();
+ HeapRegion* next = cur->next();
+ if (prev == NULL) {
+ _head = next;
+ } else {
+ prev->set_next(next);
+ }
+ if (next == NULL) {
+ _tail = prev;
+ } else {
+ next->set_prev(prev);
+ }
+ cur->set_prev(NULL);
+ cur->set_next(NULL);
+
+ if (_last == cur) {
+ _last = NULL;
+ }
+
+ remove(cur);
+ decrease_length(cur->node_index());
+
+ return cur;
+}
+
+inline void FreeRegionList::NodeInfo::increase_length(uint node_index) {
+ if (node_index < _num_nodes) {
+ _length_of_node[node_index] += 1;
+ }
+}
+
+inline void FreeRegionList::NodeInfo::decrease_length(uint node_index) {
+ if (node_index < _num_nodes) {
+ assert(_length_of_node[node_index] > 0,
+ err_msg("Current length %u should be greater than zero for node %u",
+ _length_of_node[node_index], node_index));
+ _length_of_node[node_index] -= 1;
+ }
+}
+
+inline uint FreeRegionList::NodeInfo::length(uint node_index) const {
+ return _length_of_node[node_index];
+}
+
+inline void FreeRegionList::increase_length(uint node_index) {
+ if (_node_info != NULL) {
+ return _node_info->increase_length(node_index);
+ }
+}
+
+inline void FreeRegionList::decrease_length(uint node_index) {
+ if (_node_info != NULL) {
+ return _node_info->decrease_length(node_index);
+ }
+}
+
+inline uint FreeRegionList::length(uint node_index) const {
+ if (_node_info != NULL) {
+ return _node_info->length(node_index);
+ } else {
+ return 0;
+ }
+}
+
#endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP
diff --git a/hotspot/src/share/vm/memory/universe.cpp b/hotspot/src/share/vm/memory/universe.cpp
index 53f402172..1b66e0cb8 100644
--- a/hotspot/src/share/vm/memory/universe.cpp
+++ b/hotspot/src/share/vm/memory/universe.cpp
@@ -78,6 +78,7 @@
#include "gc_implementation/concurrentMarkSweep/cmsAdaptiveSizePolicy.hpp"
#include "gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.hpp"
#include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
+#include "gc_implementation/g1/g1NUMA.hpp"
#include "gc_implementation/g1/g1CollectorPolicy_ext.hpp"
#include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp"
#endif // INCLUDE_ALL_GCS
@@ -811,6 +812,7 @@ jint Universe::initialize_heap() {
#if INCLUDE_ALL_GCS
G1CollectorPolicyExt* g1p = new G1CollectorPolicyExt();
g1p->initialize_all();
+ G1NUMA::create();
G1CollectedHeap* g1h = new G1CollectedHeap(g1p);
Universe::_collectedHeap = g1h;
#else // INCLUDE_ALL_GCS
diff --git a/hotspot/src/share/vm/prims/whitebox.cpp b/hotspot/src/share/vm/prims/whitebox.cpp
index 2247b29f3..c44697f0d 100644
--- a/hotspot/src/share/vm/prims/whitebox.cpp
+++ b/hotspot/src/share/vm/prims/whitebox.cpp
@@ -28,6 +28,7 @@
#include "memory/metaspaceShared.hpp"
#include "memory/iterator.hpp"
#include "memory/universe.hpp"
+#include "memory/oopFactory.hpp"
#include "oops/oop.inline.hpp"
#include "classfile/symbolTable.hpp"
@@ -354,6 +355,30 @@ WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
return JNIHandles::make_local(env, h());
WB_END
+
+WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
+ if (UseG1GC) {
+ G1NUMA* numa = G1NUMA::numa();
+ return (jint)numa->num_active_nodes();
+ }
+ THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
+WB_END
+
+WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
+ if (UseG1GC) {
+ G1NUMA* numa = G1NUMA::numa();
+ int num_node_ids = (int)numa->num_active_nodes();
+ const int* node_ids = numa->node_ids();
+
+ typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
+ for (int i = 0; i < num_node_ids; i++) {
+ result->int_at_put(i, (jint)node_ids[i]);
+ }
+ return (jintArray) JNIHandles::make_local(env, result);
+ }
+ THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
+WB_END
+
#endif // INCLUDE_ALL_GCS
#if INCLUDE_NMT
@@ -1246,6 +1271,9 @@ static JNINativeMethod methods[] = {
{CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
{CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
(void*)&WB_G1AuxiliaryMemoryUsage },
+ {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
+ {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
+
#endif // INCLUDE_ALL_GCS
#if INCLUDE_NMT
{CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
diff --git a/hotspot/src/share/vm/runtime/os.hpp b/hotspot/src/share/vm/runtime/os.hpp
index cff2e9c3e..a60ef4206 100644
--- a/hotspot/src/share/vm/runtime/os.hpp
+++ b/hotspot/src/share/vm/runtime/os.hpp
@@ -369,6 +369,7 @@ class os: AllStatic {
static size_t numa_get_leaf_groups(int *ids, size_t size);
static bool numa_topology_changed();
static int numa_get_group_id();
+ static int numa_get_group_id_for_address(const void* address);
// Page manipulation
struct page_info {
diff --git a/hotspot/test/gc/g1/TestG1NUMATouchRegions.java b/hotspot/test/gc/g1/TestG1NUMATouchRegions.java
new file mode 100644
index 000000000..c5322849e
--- /dev/null
+++ b/hotspot/test/gc/g1/TestG1NUMATouchRegions.java
@@ -0,0 +1,243 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package gc;
+
+/**
+ * @test TestG1NUMATouchRegions
+ * @summary Ensure the bottom of the given heap regions are properly touched with requested NUMA id.
+ * @key gc
+ * @requires os.family == "linux"
+ * @library /testlibrary /testlibrary/whitebox
+ * @modules java.base/jdk.internal.misc
+ * java.management
+ * @build sun.hotspot.WhiteBox
+ * @run driver ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm -XX:+UseG1GC -Xbootclasspath/a:. -XX:+UseNUMA -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI gc.TestG1NUMATouchRegions
+ */
+
+import java.util.LinkedList;
+import com.oracle.java.testlibrary.*;
+import sun.hotspot.WhiteBox;
+
+public class TestG1NUMATouchRegions {
+ enum NUMASupportStatus {
+ NOT_CHECKED,
+ SUPPORT,
+ NOT_SUPPORT
+ };
+
+ static int G1HeapRegionSize1MB = 1;
+ static int G1HeapRegionSize8MB = 8;
+
+ static NUMASupportStatus status = NUMASupportStatus.NOT_CHECKED;
+
+ public static void main(String[] args) throws Exception {
+ // 1. Page size < G1HeapRegionSize
+ // Test default page with 1MB heap region size
+ testMemoryTouch("-XX:-UseLargePages", G1HeapRegionSize1MB);
+ // 2. Page size > G1HeapRegionSize
+ // Test large page with 1MB heap region size.
+ testMemoryTouch("-XX:+UseLargePages", G1HeapRegionSize1MB);
+ // 3. Page size < G1HeapRegionSize
+ // Test large page with 8MB heap region size.
+ testMemoryTouch("-XX:+UseLargePages", G1HeapRegionSize8MB);
+ }
+
+ // On Linux, always UseNUMA is enabled if there is multiple active numa nodes.
+ static NUMASupportStatus checkNUMAIsEnabled(OutputAnalyzer output) {
+ boolean supportNUMA = Boolean.parseBoolean(output.firstMatch("\\bUseNUMA\\b.*?=.*?([a-z]+)", 1));
+ System.out.println("supportNUMA=" + supportNUMA);
+ return supportNUMA ? NUMASupportStatus.SUPPORT : NUMASupportStatus.NOT_SUPPORT;
+ }
+
+ static long parseSizeString(String size) {
+ long multiplier = 1;
+
+ if (size.endsWith("B")) {
+ multiplier = 1;
+ } else if (size.endsWith("K")) {
+ multiplier = 1024;
+ } else if (size.endsWith("M")) {
+ multiplier = 1024 * 1024;
+ } else if (size.endsWith("G")) {
+ multiplier = 1024 * 1024 * 1024;
+ } else {
+ throw new IllegalArgumentException("Expected memory string '" + size + "'to end with either of: B, K, M, G");
+ }
+
+ long longSize = Long.parseUnsignedLong(size.substring(0, size.length() - 1));
+
+ return longSize * multiplier;
+ }
+
+ static long heapPageSize(OutputAnalyzer output) {
+ String HeapPageSizePattern = "Heap: .*page_size=([^ ]+)";
+ String str = output.firstMatch(HeapPageSizePattern, 1);
+
+ if (str == null) {
+ output.reportDiagnosticSummary();
+ throw new RuntimeException("Match from '" + HeapPageSizePattern + "' got 'null'");
+ }
+
+ return parseSizeString(str);
+ }
+
+ // 1. -UseLargePages: default page, page size < G1HeapRegionSize
+ // +UseLargePages: large page size <= G1HeapRegionSize
+ //
+ // Each 'int' represents a numa id of single HeapRegion (bottom page).
+ // e.g. 1MB heap region, 2MB page size and 2 NUMA nodes system
+ // Check the first set(2 regions)
+ // 0| ...omitted..| 0
+ // 1| ...omitted..| 1
+ static void checkCase1Pattern(OutputAnalyzer output, int index, long g1HeapRegionSize, long actualPageSize, int[] memoryNodeIds) throws Exception {
+ StringBuilder sb = new StringBuilder();
+
+ // Append index which means heap region index.
+ sb.append(String.format("%6d", index));
+ sb.append("| .* | ");
+
+ // Append page node id.
+ sb.append(memoryNodeIds[index]);
+
+ output.shouldMatch(sb.toString());
+ }
+
+ // 3. +UseLargePages: large page size > G1HeapRegionSize
+ //
+ // As a OS page is consist of multiple heap regions, log also should be
+ // printed multiple times for same numa id.
+ // e.g. 1MB heap region, 2MB page size and 2 NUMA nodes system
+ // Check the first set(4 regions)
+ // 0| ...omitted..| 0
+ // 1| ...omitted..| 0
+ // 2| ...omitted..| 1
+ // 3| ...omitted..| 1
+ static void checkCase2Pattern(OutputAnalyzer output, int index, long g1HeapRegionSize, long actualPageSize, int[] memoryNodeIds) throws Exception {
+ StringBuilder sb = new StringBuilder();
+
+ // Append page range.
+ int lines_to_print = (int)(actualPageSize / g1HeapRegionSize);
+ for (int i = 0; i < lines_to_print; i++) {
+ // Append index which means heap region index.
+ sb.append(String.format("%6d", index * lines_to_print + i));
+ sb.append("| .* | ");
+
+ // Append page node id.
+ sb.append(memoryNodeIds[index]);
+
+ output.shouldMatch(sb.toString());
+ sb.setLength(0);
+ }
+ }
+
+ static void checkNUMALog(OutputAnalyzer output, int regionSizeInMB) throws Exception {
+ WhiteBox wb = WhiteBox.getWhiteBox();
+ long g1HeapRegionSize = regionSizeInMB * 1024 * 1024;
+ long actualPageSize = heapPageSize(output);
+ long defaultPageSize = (long)wb.getVMPageSize();
+ int memoryNodeCount = wb.g1ActiveMemoryNodeCount();
+ int[] memoryNodeIds = wb.g1MemoryNodeIds();
+
+ System.out.println("node count=" + memoryNodeCount + ", actualPageSize=" + actualPageSize);
+ // Check for the first set of active numa nodes.
+ for (int index = 0; index < memoryNodeCount; index++) {
+ if (actualPageSize <= defaultPageSize) {
+ checkCase1Pattern(output, index, g1HeapRegionSize, actualPageSize, memoryNodeIds);
+ } else {
+ checkCase2Pattern(output, index, g1HeapRegionSize, actualPageSize, memoryNodeIds);
+ }
+ }
+ }
+
+ static void testMemoryTouch(String largePagesSetting, int regionSizeInMB) throws Exception {
+ // Skip testing with message.
+ if (status == NUMASupportStatus.NOT_SUPPORT) {
+ System.out.println("NUMA is not supported");
+ return;
+ }
+
+ ProcessBuilder pb_enabled = ProcessTools.createJavaProcessBuilder(
+ "-Xbootclasspath/a:.",
+ "-Xlog:pagesize,gc+heap+region=trace",
+ "-XX:+UseG1GC",
+ "-Xmx128m",
+ "-Xms128m",
+ "-XX:+UnlockDiagnosticVMOptions",
+ "-XX:+WhiteBoxAPI",
+ "-XX:+PrintFlagsFinal",
+ "-XX:+UseNUMA",
+ "-XX:+AlwaysPreTouch",
+ largePagesSetting,
+ "-XX:G1HeapRegionSize=" + regionSizeInMB + "m",
+ GCTest.class.getName());
+ OutputAnalyzer output = new OutputAnalyzer(pb_enabled.start());
+
+ // Check NUMA availability.
+ if (status == NUMASupportStatus.NOT_CHECKED) {
+ status = checkNUMAIsEnabled(output);
+ }
+
+ if (status == NUMASupportStatus.SUPPORT) {
+ checkNUMALog(output, regionSizeInMB);
+ } else {
+ // Exit with message for the first test.
+ System.out.println("NUMA is not supported");
+ }
+ }
+
+ static class GCTest {
+ public static final int M = 1024*1024;
+ public static LinkedList<Object> garbageList = new LinkedList<Object>();
+ // A large object referenced by a static.
+ static int[] filler = new int[10 * M];
+
+ public static void genGarbage() {
+ for (int i = 0; i < 32*1024; i++) {
+ garbageList.add(new int[100]);
+ }
+ garbageList.clear();
+ }
+
+ public static void main(String[] args) {
+
+ int[] large = new int[M];
+ Object ref = large;
+
+ System.out.println("Creating garbage");
+ for (int i = 0; i < 100; i++) {
+ // A large object that will be reclaimed eagerly.
+ large = new int[6*M];
+ genGarbage();
+ // Make sure that the compiler cannot completely remove
+ // the allocation of the large object until here.
+ System.out.println(large);
+ }
+
+ // Keep the reference to the first object alive.
+ System.out.println(ref);
+ System.out.println("Done");
+ }
+ }
+}
diff --git a/jdk/test/lib/sun/hotspot/WhiteBox.java b/jdk/test/lib/sun/hotspot/WhiteBox.java
index 9497c9530..a6d773bc8 100644
--- a/jdk/test/lib/sun/hotspot/WhiteBox.java
+++ b/jdk/test/lib/sun/hotspot/WhiteBox.java
@@ -141,6 +141,8 @@ public class WhiteBox {
public native int g1RegionSize();
public native MemoryUsage g1AuxiliaryMemoryUsage();
public native Object[] parseCommandLine(String commandline, DiagnosticCommand[] args);
+ public native int g1ActiveMemoryNodeCount();
+ public native int[] g1MemoryNodeIds();
// Parallel GC
public native long psVirtualSpaceAlignment();
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