是否有任何程序可以测量给定程序的总计算时间和总I / O时间(写入stdout或文件)?
编辑:这是Linux 64位程序
答案 0 :(得分:1)
时间:
$ time echo "hello world"
hello world
real 0m0.000s
user 0m0.000s
sys 0m0.000s
strace -c :
$ strace -c echo "hello world"
hello world
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
nan 0.000000 0 1 read
nan 0.000000 0 1 write
nan 0.000000 0 14 12 open
nan 0.000000 0 3 close
nan 0.000000 0 12 9 stat
nan 0.000000 0 3 fstat
nan 0.000000 0 8 mmap
nan 0.000000 0 3 mprotect
nan 0.000000 0 2 munmap
nan 0.000000 0 3 brk
nan 0.000000 0 1 1 access
nan 0.000000 0 1 execve
nan 0.000000 0 1 uname
nan 0.000000 0 1 arch_prctl
------ ----------- ----------- --------- --------- ----------------
100.00 0.000000 54 22 total
答案 1 :(得分:0)
您可以使用time
命令获取进程占用的总挂钟时间和总CPU时间。这将为您提供合理的估算,特别是对于I / O繁重的流程。