% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
 42.89    0.010129           4      2080      1024 chdir
 29.38    0.006937         770         9         1 wait4
 25.85    0.006104          82        74         3 futex
  1.08    0.000254           7        32           munmap
  0.62    0.000147           0       184           rt_sigprocmask
  0.18    0.000043           1        40           clone
  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        33           mmap
  0.00    0.000000           0        34           mprotect
  0.00    0.000000           0         8           membarrier
------ ----------- ----------- --------- --------- ----------------
100.00    0.023614           9      2506      1028 total
