On Tue, Oct 08, 2013 at 10:22:23AM -0600, David Ahern wrote:
> On 10/8/13 9:51 AM, Dave Jones wrote:
> > On Tue, Oct 08, 2013 at 08:59:38AM +0200, Ingo Molnar wrote:
> >
> > > You might want to concentrate your efforts from fighting perf
> > > functionality towards decreasing per tracepoint overhead instead,
> > > without hurting kernel functionality and maintainability.
> >
> > Making it easier to disable perf entirely would be desirable for one use
> > case.
> > I can't do a trinity run for more than a few hours for the last few months
> > without hitting perf/ftrace bugs that no-one seems to be able to get their
> > heads around.
>
> Looks like trinity has an exclude syscall option. Seems like that option
> can be used to avoid perf_event_open (haven't tried though).
You'd think that, but for whatever reason, ftrace/perf oopses still happen.
Dave
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