From c6d6fdcc4c944df9998e0ebe75f31cc8aed452c1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jaroslav=20=C5=A0karvada?= <[email protected]>
Date: Wed, 30 Jun 2021 22:00:19 +0200
Subject: [PATCH] profiles: drop sched_ tuning where appropriate
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According to the performance team measurements the sched_ tuning
should be dropped in several profiles.

Resolves: rhbz#1957829

Signed-off-by: Jaroslav Škarvada <[email protected]>
---
 profiles/latency-performance/tuned.conf    | 13 -------------
 profiles/sap-hana/tuned.conf               |  4 ----
 profiles/throughput-performance/tuned.conf | 22 ----------------------
 profiles/virtual-host/tuned.conf           |  6 ------
 4 files changed, 45 deletions(-)

diff --git a/profiles/latency-performance/tuned.conf b/profiles/latency-performance/tuned.conf
index 66f06ae..da1e357 100644
--- a/profiles/latency-performance/tuned.conf
+++ b/profiles/latency-performance/tuned.conf
@@ -32,16 +32,3 @@ vm.dirty_background_ratio=3
 # 100 tells the kernel to aggressively swap processes out of physical memory
 # and move them to swap cache
 vm.swappiness=10
-
-[scheduler]
-# ktune sysctl settings for rhel6 servers, maximizing i/o throughput
-#
-# Minimal preemption granularity for CPU-bound tasks:
-# (default: 1 msec#  (1 + ilog(ncpus)), units: nanoseconds)
-sched_min_granularity_ns = 3000000
-sched_wakeup_granularity_ns = 4000000
-
-# The total time the scheduler will consider a migrated process
-# "cache hot" and thus less likely to be re-migrated
-# (system default is 500000, i.e. 0.5 ms)
-sched_migration_cost_ns = 5000000
diff --git a/profiles/sap-hana/tuned.conf b/profiles/sap-hana/tuned.conf
index c91a9ee..81d5930 100644
--- a/profiles/sap-hana/tuned.conf
+++ b/profiles/sap-hana/tuned.conf
@@ -20,7 +20,3 @@ kernel.numa_balancing = 0
 vm.dirty_ratio = 40
 vm.dirty_background_ratio = 10
 vm.swappiness = 10
-
-[scheduler]
-sched_min_granularity_ns = 3000000
-sched_wakeup_granularity_ns = 4000000
diff --git a/profiles/throughput-performance/tuned.conf b/profiles/throughput-performance/tuned.conf
index ebb3f7d..98c6b26 100644
--- a/profiles/throughput-performance/tuned.conf
+++ b/profiles/throughput-performance/tuned.conf
@@ -58,31 +58,9 @@ vm.dirty_background_ratio = 10
 # on older kernels
 net.core.somaxconn=>2048
 
-[scheduler]
-# ktune sysctl settings for rhel6 servers, maximizing i/o throughput
-#
-# Minimal preemption granularity for CPU-bound tasks:
-# (default: 1 msec#  (1 + ilog(ncpus)), units: nanoseconds)
-sched_min_granularity_ns = 10000000
-
-# SCHED_OTHER wake-up granularity.
-# (default: 1 msec#  (1 + ilog(ncpus)), units: nanoseconds)
-#
-# This option delays the preemption effects of decoupled workloads
-# and reduces their over-scheduling. Synchronous workloads will still
-# have immediate wakeup/sleep latencies.
-sched_wakeup_granularity_ns = 15000000
-
 # Marvell ThunderX
 [sysctl.thunderx]
 type=sysctl
 uname_regex=aarch64
 cpuinfo_regex=${thunderx_cpuinfo_regex}
 kernel.numa_balancing=0
-
-# AMD
-[scheduler.amd]
-type=scheduler
-uname_regex=x86_64
-cpuinfo_regex=${amd_cpuinfo_regex}
-sched_migration_cost_ns=5000000
diff --git a/profiles/virtual-host/tuned.conf b/profiles/virtual-host/tuned.conf
index 3358105..c1942da 100644
--- a/profiles/virtual-host/tuned.conf
+++ b/profiles/virtual-host/tuned.conf
@@ -14,9 +14,3 @@ vm.dirty_background_ratio = 5
 [cpu]
 # Setting C3 state sleep mode/power savings
 force_latency=cstate.id_no_zero:3|70
-
-[scheduler]
-# The total time the scheduler will consider a migrated process
-# "cache hot" and thus less likely to be re-migrated
-# (system default is 500000, i.e. 0.5 ms)
-sched_migration_cost_ns = 5000000
-- 
2.43.0