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发表于 2006-9-19 22:15:59
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man time
The time command runs the specified program command with the given
arguments. When command finishes, time writes a message to standard
error giving timing statistics about this program run. These statis-
tics consist of (i) the elapsed real time between invocation and termi-
nation, (ii) the user CPU time (the sum of the tms_utime and tms_cutime
values in a struct tms as returned by times(2)), and (iii) the system
CPU time (the sum of the tms_stime and tms_cstime values in a struct
tms as returned by times(2)). |
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