From: Ian Rogers <irogers@google.com>
To: John Garry <john.garry@huawei.com>
Cc: kernel test robot <rong.a.chen@intel.com>,
Jin Yao <yao.jin@linux.intel.com>,
Andi Kleen <ak@linux.intel.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>, Jiri Olsa <jolsa@redhat.com>,
Leo Yan <leo.yan@linaro.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Namhyung Kim <namhyung@kernel.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
linuxarm@huawei.com, LKML <linux-kernel@vger.kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Joakim Zhang <qiangqing.zhang@nxp.com>,
zhangshaokun@hisilicon.com, James Clark <james.clark@arm.com>,
linux-imx@nxp.com, 0day robot <lkp@intel.com>,
lkp@lists.01.org
Subject: Re: [perf metricgroup] fcc9c5243c: perf-sanity-tests.Parse_and_process_metrics.fail
Date: Mon, 19 Oct 2020 09:20:41 -0700 [thread overview]
Message-ID: <CAP-5=fWuUVkn35Ep7TQpFvdVJHi8MntAAbRAXVCU_1bYM2rPeQ@mail.gmail.com> (raw)
In-Reply-To: <602e6bb8-a4ac-fae7-ed61-edf252e08d9a@huawei.com>
On Mon, Oct 19, 2020 at 2:51 AM John Garry <john.garry@huawei.com> wrote:
>
> 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.
Thanks for taking a look John. If you want help you can send the
output of "perf test 67 -vvv" to me. It is possible Broadwell has
similar glitches in the json to Skylake. I tested the original test on
server parts as I can access them as cloud machines.
> 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.
I still have these changes to look at in my inbox but I'm assuming
they're good :-) Sorry for not getting to them, but it's good they are
merged.
Thanks,
Ian
> 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
> >>
> > .
> >
>
next prev parent reply other threads:[~2020-10-19 16:23 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-08 10:15 [PATCH RFC v4 00/13] perf pmu-events: Support event aliasing for system PMUs John Garry
2020-10-08 10:15 ` [PATCH RFC v4 01/13] perf jevents: Add support for an extra directory level John Garry
2020-10-08 10:15 ` [PATCH RFC v4 02/13] perf jevents: Add support for system events tables John Garry
2020-10-08 10:15 ` [PATCH RFC v4 03/13] perf pmu: Add pmu_id() John Garry
2020-10-08 10:15 ` [PATCH RFC v4 04/13] perf pmu: Add pmu_add_sys_aliases() John Garry
2020-10-08 10:15 ` [PATCH RFC v4 05/13] perf vendor events arm64: Add Architected events smmuv3-pmcg.json John Garry
2020-10-08 10:15 ` [PATCH RFC v4 06/13] perf vendor events arm64: Add hip09 SMMUv3 PMCG events John Garry
2020-10-14 18:06 ` Robin Murphy
2020-10-15 7:47 ` John Garry
2020-10-08 10:15 ` [PATCH RFC v4 07/13] perf vendor events arm64: Add hip09 uncore events John Garry
2020-10-08 10:15 ` [PATCH RFC v4 08/13] perf metricgroup: Fix uncore metric expressions John Garry
2020-10-08 10:15 ` [PATCH RFC v4 09/13] perf metricgroup: Hack a fix for aliases when covering multiple PMUs John Garry
2020-10-18 8:50 ` [perf metricgroup] fcc9c5243c: perf-sanity-tests.Parse_and_process_metrics.fail kernel test robot
2020-10-18 23:30 ` Ian Rogers
2020-10-19 1:52 ` Andi Kleen
2020-10-19 8:02 ` Jin, Yao
2020-10-19 9:48 ` John Garry
2020-10-19 11:49 ` Jin, Yao
2020-10-19 16:20 ` Ian Rogers [this message]
2020-10-19 17:04 ` John Garry
2020-10-20 8:56 ` kajoljain
2020-10-20 16:53 ` Ian Rogers
2020-11-03 14:43 ` John Garry
2020-11-03 16:05 ` Ian Rogers
2020-11-03 16:54 ` John Garry
2020-11-04 4:58 ` kajoljain
2020-10-08 10:15 ` [PATCH RFC v4 10/13] perf metricgroup: Split up metricgroup__print() John Garry
2020-10-08 10:15 ` [PATCH RFC v4 11/13] perf metricgroup: Support printing metric groups for system PMUs John Garry
2020-10-08 10:15 ` [PATCH RFC v4 12/13] perf metricgroup: Support adding metrics " John Garry
2020-10-08 10:15 ` [PATCH RFC v4 13/13] perf vendor events: Add JSON metrics for imx8mm DDR Perf John Garry
2020-10-12 10:03 ` Joakim Zhang
2020-10-12 10:34 ` John Garry
2020-10-08 11:27 ` [PATCH RFC v4 00/13] perf pmu-events: Support event aliasing for system PMUs kajoljain
2020-10-08 11:49 ` John Garry
2020-10-14 11:16 ` Jiri Olsa
2020-10-14 17:41 ` John Garry
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