strace를 사용하여 많은 시간이 걸리는 전화 만 표시하는 방법은 무엇입니까?

Question

일정 기간 동안 만 전화를 걸 수있는 방법이 있습니까? 출력의 CPU 시간을 나타내는 플래그 (-c)가 같은

Answer 1

같습니다 :

man strace

샘플 출력 :

sysadm@brownie:~$ strace -c ./crypt_crack.py 
% time  seconds usecs/call  calls errors syscall 
------ ----------- ----------- --------- --------- ---------------- 
84.38 0.000027   0  340  273 open 
15.63 0.000005   0  67   rt_sigaction 
    0.00 0.000000   0  91   read 
    0.00 0.000000   0  67   close 
    0.00 0.000000   0  117  89 stat 
    0.00 0.000000   0  96   fstat 
    0.00 0.000000   0   1   lstat 
    0.00 0.000000   0   3   lseek 
    0.00 0.000000   0  64   mmap 
    0.00 0.000000   0  17   mprotect 
    0.00 0.000000   0  30   munmap 
    0.00 0.000000   0   8   brk 
    0.00 0.000000   0   1   rt_sigprocmask 
    0.00 0.000000   0   4   2 ioctl 
    0.00 0.000000   0   1   1 access 
    0.00 0.000000   0   1   execve 
    0.00 0.000000   0   1   uname 
    0.00 0.000000   0   2   fcntl 
    0.00 0.000000   0   4   getdents 
    0.00 0.000000   0   1   getcwd 
    0.00 0.000000   0   1   1 readlink 
    0.00 0.000000   0   1   getrlimit 
    0.00 0.000000   0   1   arch_prctl 
    0.00 0.000000   0   2   futex 
    0.00 0.000000   0   1   set_tid_address 
    0.00 0.000000   0   1   set_robust_list 
------ ----------- ----------- --------- --------- ---------------- 
100.00 0.000032     923  366 total 

sysadm@brownie:~$ 

-c 플래그 strace를 실행할 때 실행이 종료 될 때까지 모든 출력을 유지하는 것 같습니다 (ctrl-c)

그리고 CPU 시간을 찾으려면 awk으로 == 0.0 :

sysadm@brownie:~$ strace -c ls -la 2>&1 | awk '{if ($2 == 0.0) print;}' 
    0.00 0.000000   0  23   read 
    0.00 0.000000   0   1   write 
    0.00 0.000000   0  34  12 open 
    0.00 0.000000   0  27   close 
    0.00 0.000000   0  34   stat 
    0.00 0.000000   0  23   fstat 
    0.00 0.000000   0  34   lstat 
    0.00 0.000000   0   1   lseek 
    0.00 0.000000   0  41   mmap 
    0.00 0.000000   0  12   munmap 
    0.00 0.000000   0   3   brk 
    0.00 0.000000   0   2   rt_sigaction 
    0.00 0.000000   0   1   rt_sigprocmask 
    0.00 0.000000   0   2   2 ioctl 
    0.00 0.000000   0   2   1 access 
    0.00 0.000000   0   4   socket 
    0.00 0.000000   0   4   4 connect 
    0.00 0.000000   0   1   execve 
    0.00 0.000000   0   1   uname 
    0.00 0.000000   0  13   fcntl 
    0.00 0.000000   0   2   getdents 
    0.00 0.000000   0   1   getrlimit 
    0.00 0.000000   0   1   arch_prctl 
    0.00 0.000000   0  67  67 getxattr 
    0.00 0.000000   0   1   futex 
    0.00 0.000000   0   1   set_tid_address 
    0.00 0.000000   0   1   clock_gettime 
    0.00 0.000000   0   1   set_robust_list 
sysadm@brownie:~$