Messages in this thread | | | Subject | Re: [perf metricgroup] fcc9c5243c: perf-sanity-tests.Parse_and_process_metrics.fail | From | John Garry <> | Date | Mon, 19 Oct 2020 10:48:18 +0100 |
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On 19/10/2020 00:30, Ian Rogers wrote: > On Sun, Oct 18, 2020 at 1:51 AM kernel test robot <rong.a.chen@intel.com> wrote: >> >> Greeting, >> >> FYI, we noticed the following commit (built with gcc-9): >> >> commit: fcc9c5243c478f104014daf4d23db86098d2aef0 ("perf metricgroup: Hack a fix for aliases when covering multiple PMUs") >> url: https://github.com/0day-ci/linux/commits/John-Garry/perf-pmu-events-Support-event-aliasing-for-system-PMUs/20201008-182049 >> >> >> in testcase: perf-sanity-tests >> version: perf-x86_64-c85fb28b6f99-1_20201008 >> with following parameters: >> >> perf_compiler: gcc >> ucode: 0xdc >> >> >> >> on test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz with 32G memory >> >> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): > > I believe this is a Skylake and there is a known bug in the Skylake > metric DRAM_Parallel_Reads as described here: > https://lore.kernel.org/lkml/CAP-5=fXejVaQa9qfW66cY77qB962+jbe8tT5bsLoOOcFmODnWQ@mail.gmail.com/ > Fixing the bug needs more knowledge than what is available in manuals. > Hopefully Intel can take a look. > > Thanks, > Ian
So this named patch ("perf metricgroup: Hack a fix for aliases...") is breaking test #67 on my machine also, which is a broadwell.
I will have a look, but I was hoping that Ian would have a proper fix for this on top of ("perf metricgroup: Fix uncore metric expressions"), which now looks to be merged.
Thanks!
> >> >> >> If you fix the issue, kindly add following tag >> Reported-by: kernel test robot <rong.a.chen@intel.com> >> >> >> 2020-10-16 19:31:52 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-fcc9c5243c478f104014daf4d23db86098d2aef0/tools/perf/perf test 67 >> 67: Parse and process metrics : FAILED! >> 2020-10-16 19:31:52 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-fcc9c5243c478f104014daf4d23db86098d2aef0/tools/perf/perf test 68 >> 68: x86 rdpmc : Ok >> 2020-10-16 19:31:52 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-fcc9c5243c478f104014daf4d23db86098d2aef0/tools/perf/perf test 69 >> 69: Convert perf time to TSC : Ok >> 2020-10-16 19:31:52 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-fcc9c5243c478f104014daf4d23db86098d2aef0/tools/perf/perf test 70 >> 70: DWARF unwind : Ok >> 2020-10-16 19:31:52 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-fcc9c5243c478f104014daf4d23db86098d2aef0/tools/perf/perf test 71 >> 71: x86 instruction decoder - new instructions : Ok >> 2020-10-16 19:31:52 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-fcc9c5243c478f104014daf4d23db86098d2aef0/tools/perf/perf test 72 >> 72: Intel PT packet decoder : Ok >> 2020-10-16 19:31:52 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-fcc9c5243c478f104014daf4d23db86098d2aef0/tools/perf/perf test 73 >> 73: x86 bp modify : Ok >> 2020-10-16 19:31:53 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-fcc9c5243c478f104014daf4d23db86098d2aef0/tools/perf/perf test 74 >> 74: probe libc's inet_pton & backtrace it with ping : Ok >> 2020-10-16 19:31:54 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-fcc9c5243c478f104014daf4d23db86098d2aef0/tools/perf/perf test 75 >> 75: Zstd perf.data compression/decompression : Ok >> >> >> >> To reproduce: >> >> git clone https://github.com/intel/lkp-tests.git >> cd lkp-tests >> bin/lkp install job.yaml # job file is attached in this email >> bin/lkp run job.yaml >> >> >> >> Thanks, >> Rong Chen >> > . >
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