Re: [PATCH 3/4] perf: teach perf inject to merge sched_stat_* andsched_switch events (v2)

[David Ahern]

On 8/27/12 2:51 PM, Andi Kleen wrote:
> Andrew Vagin <avagin@xxxxxxxxxx> 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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