perf stat -x, -e duration_time,ru_utime,ru_stime,cache-misses - grep -q -r duration_time. Performance counter stats for 'grep -q -r duration_time. perf stat -e duration_time,ru_utime,ru_stime,cache-misses - grep -q -r duration_time. 'ru_stime', similarly to the already present 'duration_time' event.īoth events use the already collected rusage information obtained by wait4Įxamples presenting cache-misses and rusage information in both human and
#UTIME AND STIME STAT PATCH#
This patch adds two new tool internal events 'rusage_user_time'Īnd 'rusage_system_time' as well as their aliases 'ru_utime' and I found no way to retrieve this information using the available events When running perf stat the output for humans contains the timesīut perf stat's machine-readable format does not provide this information. For example, a process runs for a while with '50 usr, 0 sys', then followed by '100 sys'. Times spend in user or kernel mode in a machine readable format. This results in inaccurate utime and stime in '/proc/pid/stat'. It bothered me that during benchmarking using perf stat (to collectįor example CPU cache events) I could not simultaneously retrieve the
In reply to: Florian Fischer: " perf stat: introduce stats for the user and system rusage times".Previous message: Florian Fischer: " perf stat: introduce stats for the user and system rusage times".Next message: Florian Fischer: " perf util: add 'us' unit to the rusage time events".Linux-Kernel Archive: perf stat: add rusage utime and stime events perf stat: add rusage utime and stime events From: Florian Fischer
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