Messages in this thread | | | Date | Tue, 19 Oct 2021 12:06:16 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH v2 21/21] perf metric: Allow modifiers on metrics. |
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Em Fri, Oct 15, 2021 at 10:21:32AM -0700, Ian Rogers escreveu: > By allowing modifiers on metrics we can, for example, gather the > same metric for kernel and user mode. On a SkylakeX with > TopDownL1 this gives: > > $ perf stat -M TopDownL1:u,TopDownL1:k -a sleep 2 > > Performance counter stats for 'system wide':
Hi Ian, can you please take a look on this? this is on my perf/core branch.
- Arnaldo
[root@five ~]# perf test -vv "for cgroups" 70: Event expansion for cgroups : --- start --- test child forked, pid 992568 Using CPUID AuthenticAMD-25-21-0 libpfm was not enabled metric expr 1 / IPC for CPI parsing metric: 1 / IPC metric expr instructions / cycles for IPC parsing metric: instructions / cycles found event instructions found event cycles Parsing metric events '{instructions/metric-id=instructions/,cycles/metric-id=cycles/}:W' copying metric event for cgroup 'A': instructions (idx=0) copying metric event for cgroup 'B': instructions (idx=0) copying metric event for cgroup 'C': instructions (idx=0) free(): double free detected in tcache 2 test child interrupted ---- end ---- Event expansion for cgroups: FAILED! [root@five ~]#
⬢[acme@toolbox perf]$ git bisect bad c067335fcbfc67c36663dabdb9ccaa96badf9359 is the first bad commit commit c067335fcbfc67c36663dabdb9ccaa96badf9359 Author: Ian Rogers <irogers@google.com> Date: Thu Oct 7 09:56:47 2021 -0700
perf metric: Allow modifiers on metrics.
By allowing modifiers on metrics we can, for example, gather the same metric for kernel and user mode. On a SkylakeX with TopDownL1 this gives:
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