Messages in this thread | | | Date | Mon, 27 Aug 2012 15:56:23 -0600 | From | David Ahern <> | Subject | Re: [PATCH 3/4] perf: teach perf inject to merge sched_stat_* and sched_switch events (v2) |
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On 8/27/12 2:51 PM, Andi Kleen wrote: > Andrew Vagin <avagin@openvz.org> writes: >> >> My code saves sched_switch event for each process and when it meets >> stat_iowait, it reports the sched_switch event, because this event >> contains a correct callchain. By another words it replaces all >> stat_iowait events on proper sched_switch events. > > Is there any way to generalize this to arbitary events? I found myself > writing scripts to compute lengths between various events. But I
You mean delta-time between events? I have toyed around with patches to perf-script for this -- dt between same event on a cpu, dt between consecutive events on a cpu, dt between events for a thread, etc.
David
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