Thanks! And Merry Christmas Stephane! I have been traveling for the holidays so IOU a response to the previous message about Intel events. I'm preparing a detailed one for you.
I will do some testing and get back to you. Thanks Ps Vince, I checked your perf events testers and this one didn't show up. Apologies for brevity and errors as this was sent from my mobile device. > On Dec 27, 2015, at 04:24, Stephane Eranian <eran...@googlemail.com> wrote: > > Hi Phil, > >> On Thu, Dec 24, 2015 at 1:55 AM, Philip Mucci <mu...@icl.utk.edu> wrote: >> Hi folks, >> >> Does the nmi_watchdog prevent libpfm from working at all? I’m on an older >> Sandia system (compton) > No, this only affects the number of events you can measure simultaneously. > >> Is this a kernel version and perf attr data structure problem? It can’t be >> NMI since perf with raw registers seems to work fine… > Looks like it because you have perf stat working. Your kernel is set to > paranoid 2, which means you can only monitor > user level execution. > > Normally, the key field is attr.size. It should always be set to attr.size = > sizeof(attr). But that is in the example. > Furthermore, the kernel handles older attr struct (with smaller size). Bigger > are not a problem as long as the excess > fields are zero. What could cause a problem is: > - attr.reserved1 != 0 > - attr.sample_type has unknown bits set for kernel > - attr.read_format has unknown bits set for kernel > - attr.branch_sample_type has unknown bits set for kernel > > I would check that first. > > >> >> [pjmucci@compton1 perfmon2-libpfm4.git]$ uname -a >> Linux compton1 2.6.32-131.0.15.el6.x86_64 #1 SMP Tue May 10 15:42:40 EDT >> 2011 x86_64 x86_64 x86_64 GNU/Linux >> [pjmucci@compton1 perfmon2-libpfm4.git]$ cat /etc/*ease >> Red Hat Enterprise Linux Workstation release 6.1 (Santiago) >> Red Hat Enterprise Linux Workstation release 6.1 (Santiago) >> >> [pjmucci@compton32 perfmon2-libpfm4.git]$ cat /etc/*ease >> Red Hat Enterprise Linux Server release 6.2 (Santiago) >> Red Hat Enterprise Linux Server release 6.2 (Santiago) >> [pjmucci@compton32 perfmon2-libpfm4.git]$ uname -a >> Linux compton32 2.6.32-220.el6.x86_64 #1 SMP Wed Nov 9 08:03:13 EST 2011 >> x86_64 x86_64 x86_64 GNU/Linux >> >> [pjmucci@compton32 perfmon2-libpfm4.git]$ cat >> /proc/sys/kernel/perf_event_paranoid >> 2 >> [pjmucci@compton32 perfmon2-libpfm4.git]$ cat /proc/sys/kernel/nmi_watchdog >> 1 >> [pjmucci@compton32 perfmon2-libpfm4.git]$ ./examples/check_events >> snb_ep::UOPS_RETIRED:TOTAL_CYCLES:u >> Requested Event: snb_ep::UOPS_RETIRED:TOTAL_CYCLES:u >> Actual Event: snb_ep::UOPS_RETIRED:ALL:k=0:u=1:e=0:i=0:c=16:t=0 >> PMU : Intel Sandy Bridge EP >> IDX : 148897869 >> Codes : 0x105101c2 >> [pjmucci@compton32 perfmon2-libpfm4.git]$ perf stat -e r105301c2:uh sleep 1 >> >> Performance counter stats for 'sleep 1': >> >> 0 r105301c2:uh >> >> >> 1.001672975 seconds time elapsed >> [pjmucci@compton32 perfmon2-libpfm4.git]$ ./perf_examples/self_count >> snb_ep::UOPS_RETIRED:TOTAL_CYCLES:u >> self_count: cannot open event 0: Invalid argument >> >> >> [pjmucci@compton32 perfmon2-libpfm4.git]$ ./perf_examples/evt2raw >> snb_ep::UNHALTED_CORE_CYCLES:u >> r53003c:uh >> [pjmucci@compton32 perfmon2-libpfm4.git]$ ./perf_examples/evt2raw >> snb_ep::UNHALTED_REFERENCE_CYCLES:u >> r530300:uh >> [pjmucci@compton32 perfmon2-libpfm4.git]$ perf stat -e r530300:uh sleep 1 >> >> Performance counter stats for 'sleep 1': >> >> 3 r530300:uh >> >> >> 1.002638998 seconds time elapsed >> >> [pjmucci@compton32 perfmon2-libpfm4.git]$ perf stat -e r53003c:uh sleep 1 >> >> Performance counter stats for 'sleep 1': >> >> 300,065 r53003c:uh >> >> >> 1.001350589 seconds time elapsed >> >> [pjmucci@compton32 perfmon2-libpfm4.git]$ ./perf_examples/self_count >> snb_ep::UNHALTED_CORE_CYCLES:u >> self_count: cannot open event 0: Invalid argument >> >> >> >> >> ------------------------------------------------------------------------------ >> >> _______________________________________________ >> perfmon2-devel mailing list >> perfmon2-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/perfmon2-devel >
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