Messages in this thread | | | Date | Mon, 3 Mar 2014 09:13:10 -0500 | From | Don Zickus <> | Subject | Re: [PATCH 08/19] perf c2c: Shared data analyser |
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On Fri, Feb 28, 2014 at 01:03:31PM -0800, Davidlohr Bueso wrote: > On Fri, 2014-02-28 at 14:46 -0500, Don Zickus wrote: > > On Fri, Feb 28, 2014 at 11:08:59AM -0800, Andi Kleen wrote: > > > Don Zickus <dzickus@redhat.com> writes: > > > > + > > > > +static const struct perf_evsel_str_handler handlers[] = { > > > > + { "cpu/mem-loads,ldlat=30/pp", perf_c2c__process_load, }, > > > > + { "cpu/mem-stores/pp", perf_c2c__process_store, }, > > > > > Hmm I'm getting this when running a simple record command. > > invalid or unsupported event: 'cpu/mem-loads/pp' > > This only occurs with c2c, other subcommands work normally. It's as if > it were an old kernel, but it's Linus' latest. Is this an issue with the > patch or something I'm missing?
Does rebooting or 'echo 100000 > /proc/sys/kernel/perf_event_max_sample_rate'
fix the problem? Perf throttling might have lowered your sample rate so low that you can't do anything any more. Though if you are running the latest from Linus a lot of fixes should be in there to minimize that problem.
What processor are you on?
Cheers, Don
> > Furthermore, I see: > ls /sys/bus/event_source/devices/cpu/events > branch-instructions branch-misses cache-misses cache-references cpu-cycles instructions mem-loads > > Thanks! > > >
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