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From: John Garry <john.garry@huawei.com>
To: "Paul A. Clarke" <pc@us.ibm.com>, Jiri Olsa <jolsa@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
	lkml <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Michael Petlan <mpetlan@redhat.com>,
	Andi Kleen <ak@linux.intel.com>, Kajol Jain <kjain@linux.ibm.com>,
	Stephane Eranian <eranian@google.com>,
	Ian Rogers <irogers@google.com>
Subject: Re: [PATCHv4 00/19] perf metric: Add support to reuse metric
Date: Mon, 22 Mar 2021 11:36:23 +0000	[thread overview]
Message-ID: <7682e4c3-5840-bb6d-5e76-6b3fd37b04c0@huawei.com> (raw)
In-Reply-To: <20200801114050.GB377079@li-24c3614c-2adc-11b2-a85c-85f334518bdb.ibm.com>

On 01/08/2020 12:40, Paul A. Clarke wrote:
>> v4 changes:
>>    - removed acks from patch because it changed a bit
>>      with the last fixes:
>>        perf metric: Collect referenced metrics in struct metric_ref_node
>>    - fixed runtime metrics [Kajol Jain]
>>    - increased recursion depth [Paul A. Clarke]
>>    - changed patches due to dependencies:
>>        perf metric: Collect referenced metrics in struct metric_ref_node
>>        perf metric: Add recursion check when processing nested metrics
>>        perf metric: Rename struct egroup to metric
>>        perf metric: Rename group_list to metric_list
>>
>> Also available in here:
>>    git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
>>    perf/metric
> I built and ran from the above git branch, and things seem to work.
> Indeed, I was able to apply my changes to exploit the new capabilities
> via modifications to tools/perf/pmu-events/arch/powerpc/power9/metrics.json,
> as I posted earlier (and will submit once this set gets merged).
> 

Hi Paul,

I was just wondering: Does perf subtest 10.3 work ok for you with the 
metric reuse?

That's "Parsing of PMU event table metrics" subtest.

Hi Jirka,

If I add something like this:
     {
         "BriefDescription": "dummy test1",
         "MetricExpr": "Bad_Speculation + Frontend_Bound",
         "MetricGroup": "TopdownL1",
         "MetricName": "dummytest",
         "PublicDescription": "dummy test2"
     },

I get "Parse event failed metric 'dummytest' id 'bad_speculation' expr 
'bad_speculation + frontend_bound'"

Thanks,
john

> Tested-by: Paul A. Clarke<pc@us.ibm.com>
> 
> One thing I noted, but which also occurs without these patches, is that
> the perf metrics are not computed unless run as root:
> --
> $ perf stat --metrics br_misprediction_percent command
> 
>   Performance counter stats for 'command':
> 
>       1,823,530,051      pm_br_pred:u
>           2,662,705      pm_br_mpred_cmpl:u
> 
> $ /usr/bin/sudo perf stat --metrics br_misprediction_percent command
> 
>   Performance counter stats for 'command':
> 
>       1,824,655,269      pm_br_pred                #     0.09 br_misprediction_percent
>           1,654,466      pm_br_mpred_cmpl
> --


  parent reply	other threads:[~2021-03-22 11:39 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-29  9:18 [PATCHv4 00/19] perf metric: Add support to reuse metric Jiri Olsa
2020-07-29  9:18 ` [PATCH 01/19] perf metric: Fix memory leak in expr__add_id function Jiri Olsa
2020-07-29  9:18 ` [PATCH 02/19] perf metric: Add " Jiri Olsa
2020-07-29  9:18 ` [PATCH 03/19] perf metric: Change expr__get_id to return struct expr_id_data Jiri Olsa
2020-07-29  9:18 ` [PATCH 04/19] perf metric: Add expr__del_id function Jiri Olsa
2020-07-29  9:18 ` [PATCH 05/19] perf metric: Add macros for iterating map events Jiri Olsa
2020-07-29  9:18 ` [PATCH 06/19] perf metric: Add add_metric function Jiri Olsa
2020-07-29  9:18 ` [PATCH 07/19] perf metric: Rename __metricgroup__add_metric to __add_metric Jiri Olsa
2020-07-29  9:18 ` [PATCH 08/19] perf metric: Collect referenced metrics in struct metric_ref_node Jiri Olsa
2020-07-29  9:18 ` [PATCH 09/19] perf metric: Collect referenced metrics in struct metric_expr Jiri Olsa
2020-07-29  9:18 ` [PATCH 10/19] perf metric: Add referenced metrics to hash data Jiri Olsa
2020-07-29  9:19 ` [PATCH 11/19] perf metric: Compute referenced metrics Jiri Olsa
2020-07-29  9:19 ` [PATCH 12/19] perf metric: Add events for the current list Jiri Olsa
2020-07-29  9:19 ` [PATCH 13/19] perf metric: Add cache_miss_cycles to metric parse test Jiri Olsa
2020-07-29  9:19 ` [PATCH 14/19] perf metric: Add DCache_L2 " Jiri Olsa
2020-07-29  9:19 ` [PATCH 15/19] perf metric: Add recursion check when processing nested metrics Jiri Olsa
2020-07-29  9:19 ` [PATCH 16/19] perf metric: Make compute_single function more precise Jiri Olsa
2020-07-29  9:19 ` [PATCH 17/19] perf metric: Add metric group test Jiri Olsa
2020-07-29  9:19 ` [PATCH 18/19] perf metric: Rename struct egroup to metric Jiri Olsa
2020-07-29  9:19 ` [PATCH 19/19] perf metric: Rename group_list to metric_list Jiri Olsa
2020-08-01 11:40 ` [PATCHv4 00/19] perf metric: Add support to reuse metric Paul A. Clarke
2020-08-03 15:54   ` Ian Rogers
2020-08-03 16:26     ` Jiri Olsa
2020-08-03 16:49       ` Arnaldo Carvalho de Melo
2021-03-22 11:36   ` John Garry [this message]
2021-03-23 15:06     ` Paul A. Clarke
2021-03-23 15:15       ` John Garry
2021-03-24  1:54         ` Paul A. Clarke
2021-03-24  9:13           ` John Garry

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