% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
 39.48    0.005193           2      2080      1024 chdir
 31.72    0.004172         347        12         4 wait4
 20.41    0.002684          31        84         7 futex
  4.72    0.000621          18        33           mmap
  1.24    0.000163           5        32           munmap
  1.21    0.000159           0       184           rt_sigprocmask
  0.91    0.000120           3        40           clone
  0.31    0.000041           1        34           mprotect
  0.00    0.000000           0         9           set_tid_address
  0.00    0.000000           0         2           brk
  0.00    0.000000           0         1           execve
  0.00    0.000000           0         8           membarrier
------ ----------- ----------- --------- --------- ----------------
100.00    0.013153           5      2519      1035 total
