Messages in this thread | | | Subject | Re: [perf/rc5] oops running perf record -s with multiple -e | From | Peter Zijlstra <> | Date | Thu, 06 Aug 2009 17:38:00 +0200 |
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On Thu, 2009-08-06 at 08:26 +0200, Brice Goglin wrote: > Hello Ingo > > I finally managed to test the threaded perfcounter statistics (thanks a > lot for implementing it). I am running 2.6.31-rc5 (with the AMD > magny-cours patches but I don't think they matter here). I am trying to > measure local/remote memory accesses per thread during the well-known > stream benchmark. It's compiled with OpenMP using 16 threads on a > quad-socket quad-core barcelona machine. > > Command line is: > /mnt/scratch/bgoglin/cpunode/linux-2.6.31/tools/perf/perf record -f -s > -e r1000001e0 -e r1000002e0 -e r1000004e0 -e r1000008e0 ./stream > > It seems to work fine with a single -e <counter> on the command line > while it crashes when there are at least 2 of them. > It seems to work fine without -s as well.
OK, I can reproduce OOPSen this way, got me baffled though.
I'll prod at it some...
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