linux-kernel - Re: [PATCHv3 00/19] perf metric: Add support to reuse metric

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Date:   Mon, 20 Jul 2020 10:19:43 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     kajoljain <kjain@...ux.ibm.com>
Cc:     Jiri Olsa <jolsa@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Michael Petlan <mpetlan@...hat.com>,
        Andi Kleen <ak@...ux.intel.com>,
        John Garry <john.garry@...wei.com>,
        "Paul A. Clarke" <pc@...ibm.com>,
        Stephane Eranian <eranian@...gle.com>,
        Ian Rogers <irogers@...gle.com>
Subject: Re: [PATCHv3 00/19] perf metric: Add support to reuse metric

On Mon, Jul 20, 2020 at 01:39:24PM +0530, kajoljain wrote:

SNIP

> This is with your perf/metric branch:
> command# ./perf stat -M PowerBUS_Frequency -C 0 -I 1000
> assertion failed at util/metricgroup.c:709
> #           time             counts unit events
>      1.000054545          7,807,505      hv_24x7/pm_pb_cyc,chip=0/ #      2.0 GHz  PowerBUS_Frequency_0
>      1.000054545          7,807,485      hv_24x7/pm_pb_cyc,chip=1/                                   
>      2.000232761          7,807,500      hv_24x7/pm_pb_cyc,chip=0/ #      2.0 GHz  PowerBUS_Frequency_0
>      2.000232761          7,807,478      hv_24x7/pm_pb_cyc,chip=1/                                   
>      3.000363762          7,799,665      hv_24x7/pm_pb_cyc,chip=0/ #      1.9 GHz  PowerBUS_Frequency_0
>      3.000363762          7,807,502      hv_24x7/pm_pb_cyc,chip=1/                                   
> ^C     3.259418599          2,022,150      hv_24x7/pm_pb_cyc,chip=0/ #      0.5 GHz  PowerBUS_Frequency_0
>      3.259418599          2,022,164      hv_24x7/pm_pb_cyc,chip=1/                                   
> 
>  Performance counter stats for 'CPU(s) 0':
> 
>         25,436,820      hv_24x7/pm_pb_cyc,chip=0/ #      6.4 GHz  PowerBUS_Frequency_0
>         25,444,629      hv_24x7/pm_pb_cyc,chip=1/                                   
> 
>        3.259505529 seconds time elapsed

I found the bug, we are not adding runtime metrics as standalone ones,
but as referenced metrics.. will fix and try to add test for that

as for testing.. do I need some special ppc server to have support for this? 

thanks,
jirka