Flat profile:

Each sample counts as 0.01 seconds.
  %   cumulative   self              self     total           
 time   seconds   seconds    calls  us/call  us/call  name    
 99.42      3.40     3.40    20000   170.00   170.00  FFT
  0.58      3.42     0.02    10000     2.00   342.00  example1

			Call graph


granularity: each sample hit covers 4 byte(s) for 0.29% of 3.42 seconds

index % time    self  children    called     name
                0.02    3.40   10000/10000       main [2]
[1]    100.0    0.02    3.40   10000         example1 [1]
                3.40    0.00   20000/20000       FFT [3]
-----------------------------------------------
                                                 <spontaneous>
[2]    100.0    0.00    3.42                 main [2]
                0.02    3.40   10000/10000       example1 [1]
-----------------------------------------------
                3.40    0.00   20000/20000       example1 [1]
[3]     99.4    3.40    0.00   20000         FFT [3]
-----------------------------------------------

Index by function name

   [3] FFT                     [1] example1