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([10.253.24.32]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Oct 2020 04:49:56 -0700 IronPort-SDR: LglYMxrgOJWa/15A7yhxWKYN72X957pGeCidXppxBWukErwIbyTXWRX1e6NUhSHcz1XTRatLeM 34WeMilcTBEg== X-IronPort-AV: E=Sophos;i="5.77,394,1596524400"; d="scan'208";a="523090044" Received: from yzheng5-mobl3.ccr.corp.intel.com (HELO [10.254.210.169]) ([10.254.210.169]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Oct 2020 04:49:51 -0700 Subject: Re: [perf metricgroup] fcc9c5243c: perf-sanity-tests.Parse_and_process_metrics.fail To: John Garry , Ian Rogers , kernel test robot , Andi Kleen References: <1602152121-240367-10-git-send-email-john.garry@huawei.com> <20201018085031.GK11647@shao2-debian> <602e6bb8-a4ac-fae7-ed61-edf252e08d9a@huawei.com> From: "Jin, Yao" Message-ID: <023f1db8-118f-c9e6-28da-e4e7fb2134ef@linux.intel.com> Date: Mon, 19 Oct 2020 19:49:47 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 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IronPort-SDR: LglYMxrgOJWa/15A7yhxWKYN72X957pGeCidXppxBWukErwIbyTXWRX1e6NUhSHcz1XTRatLeM 34WeMilcTBEg== X-IronPort-AV: E=Sophos;i="5.77,394,1596524400"; d="scan'208";a="523090044" Received: from yzheng5-mobl3.ccr.corp.intel.com (HELO [10.254.210.169]) ([10.254.210.169]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Oct 2020 04:49:51 -0700 Subject: Re: [perf metricgroup] fcc9c5243c: perf-sanity-tests.Parse_and_process_metrics.fail To: John Garry , Ian Rogers , kernel test robot , Andi Kleen Cc: Arnaldo Carvalho de Melo , Will Deacon , Mark Rutland , Jiri Olsa , Leo Yan , Peter Zijlstra , Ingo Molnar , Alexander Shishkin , Namhyung Kim , Mathieu Poirier , linuxarm@huawei.com, LKML , Linux ARM , Joakim Zhang , zhangshaokun@hisilicon.com, James Clark , linux-imx@nxp.com, 0day robot , lkp@lists.01.org References: <1602152121-240367-10-git-send-email-john.garry@huawei.com> <20201018085031.GK11647@shao2-debian> <602e6bb8-a4ac-fae7-ed61-edf252e08d9a@huawei.com> From: "Jin, Yao" Message-ID: <023f1db8-118f-c9e6-28da-e4e7fb2134ef@linux.intel.com> Date: Mon, 19 Oct 2020 19:49:47 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.1 MIME-Version: 1.0 In-Reply-To: <602e6bb8-a4ac-fae7-ed61-edf252e08d9a@huawei.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Garry, Hi Ian, On 10/19/2020 5:48 PM, John Garry wrote: > On 19/10/2020 00:30, Ian Rogers wrote: >> On Sun, Oct 18, 2020 at 1:51 AM kernel test robot 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! > I just think they are different issues. On my KBL client, the perf test #67 is passed. But DRAM_Parallel_Reads does have issue. root@kbl-ppc:~# perf stat -M DRAM_Parallel_Reads -- sleep 1 event syntax error: '{arb/event=0x80,umask=0x2/,arb/event=0x80,umask=0x2,thresh=1/}:W' \___ unknown term 'thresh' for pmu 'uncore_arb' valid terms: event,edge,inv,umask,cmask,config,config1,config2,name,period,percore Initial error: event syntax error: '..umask=0x2/,arb/event=0x80,umask=0x2,thresh=1/}:W' \___ Cannot find PMU `arb'. Missing kernel support? Usage: perf stat [] [] -M, --metrics monitor specified metrics or metric groups (separated by ,) I have a patch to fix DRAM_Parallel_Reads. After: root@kbl-ppc:~# perf stat -M MEM_Parallel_Reads -- sleep 1 Performance counter stats for 'system wide': 3,043,952 arb/event=0x80,umask=0x2/ # 1.00 MEM_Parallel_Reads 1.000879932 seconds time elapsed I will post the patch later. Thanks Jin Yao >> >>> >>> >>> If you fix the issue, kindly add following tag >>> Reported-by: kernel test robot >>> >>> >>> 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 >>> >> . >> >