On Mon, Aug 27, 2012 at 03:56:23PM -0600, David Ahern wrote: > On 8/27/12 2:51 PM, Andi Kleen wrote: > >Andrew Vagin <ava...@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.
I did the same. But I then realized perf script is the wrong approach. perf script is a deadend as far as perf is concerned. You want a filter that generates another perf.data that you then can view in the browser. So perf inject is the better model. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
