% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
 45.20    0.019128           9      2080      1024 chdir
 28.71    0.012148        1518         8           wait4
 22.10    0.009354         102        91         6 futex
  1.78    0.000755           4       184           rt_sigprocmask
  0.91    0.000384          12        32           clone
  0.86    0.000365          11        32           munmap
  0.24    0.000102           3        33           mmap
  0.18    0.000078           2        34           mprotect
  0.01    0.000003           0         8           membarrier
  0.00    0.000000           0         2           brk
  0.00    0.000000           0         8           fork
  0.00    0.000000           0         1           execve
  0.00    0.000000           0         1           arch_prctl
  0.00    0.000000           0         9           set_tid_address
------ ----------- ----------- --------- --------- ----------------
100.00    0.042317          16      2523      1030 total
