% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
 44.92    0.016065           7      2080      1024 chdir
 28.67    0.010251        1139         9         1 wait4
 21.75    0.007778          84        92         3 futex
  1.74    0.000624           3       184           rt_sigprocmask
  1.14    0.000407          10        40           clone
  0.99    0.000353          11        32           munmap
  0.52    0.000187           5        34           mprotect
  0.27    0.000095           2        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    0.035760          14      2524      1028 total
