% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
 44.12    0.009526           4      2080      1024 chdir
 29.33    0.006332         703         9         1 wait4
 21.79    0.004704          50        94         1 futex
  1.51    0.000326           1       184           rt_sigprocmask
  1.38    0.000298           7        40           clone
  1.25    0.000269           8        32           munmap
  0.32    0.000070           2        34           mprotect
  0.30    0.000065           1        33           mmap
  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    0.021590           8      2526      1026 total
