linux-kernel - Re: [PATCHv3 0/4] perf tools: Add support for user defined metric

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Date:   Tue, 25 Jan 2022 09:41:49 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     John Garry <john.garry@...wei.com>, Jiri Olsa <jolsa@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
CC:     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>,
        Joe Mario <jmario@...hat.com>, Andi Kleen <ak@...ux.intel.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        "liuqi (BA)" <liuqi115@...wei.com>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        Zhangshaokun <zhangshaokun@...ilicon.com>,
        "irogers@...gle.com" <irogers@...gle.com>
Subject: Re: [PATCHv3 0/4] perf tools: Add support for user defined metric



On January 25, 2022 9:34:19 AM GMT-03:00, John Garry <john.garry@...wei.com> wrote:
>On 11/05/2020 21:53, Jiri Olsa wrote:
>
>+
>
>Hi jirka,
>
>Did you a plan to continue to work? I don't think that this support was 
>ever merged.
>
>We have a requirement to be able to tune parameters of metrics, and 
>support here seems suitable.

John, 


Have you tried to apply that series to see if it still applies?

- Arnaldo

>
>Thanks,
>John
>
>> hi,
>> Joe asked for possibility to add user defined metrics. Given that
>> we already have metrics support, I added --metrics-file option that
>> allows to specify custom metrics.
>> 
>>    $ cat metrics
>>    # IPC
>>    mine1 = instructions / cycles;
>>    /* DECODED_ICACHE_UOPS% */
>>    mine2 = 100 * (idq.dsb_uops / \ (idq.ms_uops + idq.mite_uops + idq.dsb_uops + lsd.uops));
>> 
>>    $ sudo perf stat --metrics-file ./metrics -M mine1,mine2 --metric-only -a -I 1000
>>    #           time       insn per cycle                mine1                mine2
>>         1.000536263                0.71                   0.7                 41.4
>>         2.002069025                0.31                   0.3                 14.1
>>         3.003427684                0.27                   0.3                 14.8
>>         4.004807132                0.25                   0.2                 12.1
>>    ...
>> 
>> v3 changes:
>>    - added doc for metrics file in perf stat man page
>>    - reporting error line number now
>>    - changed '#' style comment to C way with '//'
>> 
>> v2 changes:
>>    - add new --metrics-file option
>>    - rebased on current perf/core expression bison/flex enhancements
>> 
>> Also available in:
>>    git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
>>    perf/metric
>> 
>> thanks,
>> jirka
>> 
>> 
>> ---
>> Jiri Olsa (4):
>>        perf expr: Add parsing support for multiple expressions
>>        perf expr: Allow comments in custom metric file
>>        perf stat: Add --metrics-file option
>>        perf expr: Report line number with error
>> 
>>   tools/perf/Documentation/perf-stat.txt | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>   tools/perf/builtin-stat.c              |  7 +++++--
>>   tools/perf/tests/expr.c                | 18 ++++++++++++++++++
>>   tools/perf/util/expr.c                 |  6 ++++++
>>   tools/perf/util/expr.h                 | 21 +++++++++++++++++++--
>>   tools/perf/util/expr.l                 | 34 ++++++++++++++++++++++++++++++++++
>>   tools/perf/util/expr.y                 | 21 +++++++++++++++++----
>>   tools/perf/util/metricgroup.c          | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------
>>   tools/perf/util/metricgroup.h          |  3 ++-
>>   tools/perf/util/stat.h                 |  1 +
>>   10 files changed, 242 insertions(+), 16 deletions(-)
>> 
>> .
>> 
>