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).
David
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