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I wanted to record the cpu time of running some programs, I put /usr/bin/time command in from the the command, like the following:

/usr/bin/time command_name_and_args

the result I got as follow:

652.25user 5.29system 11:53.85elapsed 92%CPU (0avgtext+0avgdata 5109232maxresident)k
3800352inputs+1620608outputs (2major+319449minor)pagefaults 0swaps

would it be correct for the cpu time is 652.25 + 5.29 = 657.54 seconds?

and does 11:53.85elapsed mean 11 minutes 53.85 seconds on wall clock?

Thanks for help.

Xiangwu
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1 Answers1

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Exactly. CPU time might exceed wall clock time if you have more than one thread.

alamar
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