Messages in this thread | | | Date | Thu, 26 Aug 2010 01:36:54 +0400 | From | Cyrill Gorcunov <> | Subject | Re: [PATCH -v3] perf, x86: try to handle unknown nmis with running perfctrs |
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On Wed, Aug 25, 2010 at 05:20:37PM -0400, Don Zickus wrote: ... > The only problem is only one counter is overflowing in these cases, so we > would have to do it all the time, which may not be hard. But I was > thinking of something similar. > > For now, I am trying to force counter0 off, seeing that most of the perf > errata on nehalem have been on counter0. Or maybe I can get 'perf top' to > use something other than counter0 by running 'perf record' first? > > Cheers, > Don > > > > > -- Cyrill >
Well, I never looked deep inside perf tool code itself. Perhaps the easiest (if you want to disable counter0) is just disable it in kernel and see how it goes, no?
-- Cyrill
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