On Thu, 2013-06-20 at 14:47 -0400, Steven Rostedt wrote:
> On Thu, 2013-06-20 at 12:35 -0600, David Ahern wrote:
> > On 6/20/13 12:23 PM, Steven Rostedt wrote:
> > >
> > > I ran this:
> > >
> > > perf stat --repeat 100 -- perf bench sched pipe >
> > > /tmp/perf-bench-sched.{before, after}
> >
> > You want to compare:
> > perf stat --repeat 100 -p 1 -- perf bench sched pipe
> >
> > so that event is tagged to pid 1 and not the perf-bench workload.
>
> I guess I'm a bit confused. What's the significance of measuring pid 1
> (init)?
Oh wait, I just noticed Oleg's:
# perf record -e sched:sched_switch -p1 &
I missed that.
bah, time to re-run it.
-- Steve
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