Messages in this thread |  | | | Date | Mon, 16 Aug 2010 09:37:01 +0200 | | From | Robert Richter <> | | Subject | Re: [PATCH -v2] perf, x86: try to handle unknown nmis with running perfctrs |
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On 12.08.10 14:21:26, Don Zickus wrote:
> > I was testing the patch further, it properly filters perfctr > > back-to-back nmis. I was able to reliable detect unknown nmis > > triggered by the nmi button during high load perf sessions with > > multiple counters, no false positives. > > For my own curiousity, what type of high load perf sessions are you using > to test this. I don't know perf well enough to have it generate events > across multiple perfctrs.
You put load on all cpus and then start something like the following:
perf record -e cycles -e instructions -e cache-references \ -e cache-misses -e branch-misses -a -- sleep 10
-Robert
-- Advanced Micro Devices, Inc. Operating System Research Center
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