Re: [PATCH] perf, x86: Optimize intel_pmu_pebs_fixup_ip()

From: Peter Zijlstra
Date: Fri Oct 25 2013 - 13:03:19 EST

On Fri, Oct 25, 2013 at 12:33:03PM -0400, Don Zickus wrote:
> Hi Peter,
> I finally had a chance to run this on my machine. From my testing, it
> looks good. Better performance numbers. I think my longest latency went
> from 300K cycles down to 150K cycles and very few of those (most are under
> 100K cycles).
> I also don't see perf throttling me down to 1500 samples, it stops around
> 7000. So I see progress with this patch. :-)

Awesome.. I'll write up a proper patch when I'm back home.
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