From: Jiri Olsa <jolsa@redhat.com>
To: "Paul A. Clarke" <pc@us.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>,
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>,
John Garry <john.garry@huawei.com>,
Stephane Eranian <eranian@google.com>,
Ian Rogers <irogers@google.com>
Subject: Re: [PATCHv3 00/19] perf metric: Add support to reuse metric
Date: Wed, 22 Jul 2020 20:11:58 +0200 [thread overview]
Message-ID: <20200722181158.GF981884@krava> (raw)
In-Reply-To: <20200721143702.GA15990@li-24c3614c-2adc-11b2-a85c-85f334518bdb.ibm.com>
On Tue, Jul 21, 2020 at 09:48:48AM -0500, Paul A. Clarke wrote:
> On Sun, Jul 19, 2020 at 08:13:01PM +0200, Jiri Olsa wrote:
> > hi,
> > this patchset is adding the support to reused metric in
> > another metric.
> >
> > For example, to define IPC by using CPI with change like:
> >
> > {
> > "BriefDescription": "Instructions Per Cycle (per Logical Processor)",
> > - "MetricExpr": "INST_RETIRED.ANY / CPU_CLK_UNHALTED.THREAD",
> > + "MetricExpr": "1/CPI",
> > "MetricGroup": "TopDownL1",
> > "MetricName": "IPC"
> > },
> >
> > I won't be able to find all the possible places we could
> > use this at, so I wonder you guys (who was asking for this)
> > would try it and come up with comments if there's something
> > missing or we could already use it at some places.
> >
> > It's based on Arnaldo's tmp.perf/core.
> >
> > v3 changes:
> > - added some acks
> > - some patches got merged
> > - added missing zalloc include [John Garry]
> > - added ids array outside the egroup object [Ian]
> > - removed wrong m->has_constraint assignment [Ian]
> > - renamed 'list' to 'metric_list' [Ian]
> > - fixed group metric and added test for it [Paul A. Clarke]
> > - fixed memory leak [Arnaldo]
> > - using lowercase keys for metrics in hashmap, because jevents
> > converts metric_expr to lowercase
> >
> > Also available in here:
> > git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
> > perf/metric
>
> These changes seem to be mostly working for me.
>
> I attempted to exploit the new capability in the metrics definitions in
> tools/perf/pmu-events/arch/powerpc/power9/metrics.json. Those changes
> are included below.
>
> The one problem I found is with the "cpi_breakdown" metric group, as it
> no longer works:
> ```
> # perf stat --metrics cpi_breakdown ./command
> Cannot find metric or group `cpi_breakdown'
> ```
>
> "cpi_breakdown" does show up in `perf list --metricgroup`, and all of the
> (95!) metrics listed in that group are usable, so it's not obvious whether
> my changes have a problem, or merely provoke one.
I underestimated the recursion depth setup for groups,
your change is working for me with following change:
-#define RECURSION_ID_MAX 100
+#define RECURSION_ID_MAX 1000
jirka
next prev parent reply other threads:[~2020-07-22 18:12 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-19 18:13 [PATCHv3 00/19] perf metric: Add support to reuse metric Jiri Olsa
2020-07-19 18:13 ` [PATCH 01/19] perf metric: Fix memory leak in expr__add_id function Jiri Olsa
2020-07-19 21:41 ` Ian Rogers
2020-07-28 12:26 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 02/19] perf metric: Add " Jiri Olsa
2020-07-26 9:16 ` kajoljain
2020-07-28 12:27 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 03/19] perf metric: Change expr__get_id to return struct expr_id_data Jiri Olsa
2020-07-26 9:17 ` kajoljain
2020-07-28 12:28 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 04/19] perf metric: Add expr__del_id function Jiri Olsa
2020-07-26 9:17 ` kajoljain
2020-07-28 12:28 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 05/19] perf metric: Add macros for iterating map events Jiri Olsa
2020-07-19 21:46 ` Ian Rogers
2020-07-28 12:29 ` Arnaldo Carvalho de Melo
2020-07-26 9:17 ` kajoljain
2020-07-19 18:13 ` [PATCH 06/19] perf metric: Add add_metric function Jiri Olsa
2020-07-26 9:17 ` kajoljain
2020-07-28 12:30 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 07/19] perf metric: Rename __metricgroup__add_metric to __add_metric Jiri Olsa
2020-07-26 9:18 ` kajoljain
2020-07-28 12:30 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 08/19] perf metric: Collect referenced metrics in struct metric_ref_node Jiri Olsa
2020-07-19 22:18 ` Ian Rogers
2020-07-26 9:18 ` kajoljain
2020-07-28 12:31 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 09/19] perf metric: Collect referenced metrics in struct metric_expr Jiri Olsa
2020-07-26 9:18 ` kajoljain
2020-07-28 12:32 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 10/19] perf metric: Add referenced metrics to hash data Jiri Olsa
2020-07-19 22:32 ` Ian Rogers
2020-07-26 9:18 ` kajoljain
2020-07-28 12:32 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 11/19] perf metric: Compute referenced metrics Jiri Olsa
2020-07-26 9:19 ` kajoljain
2020-07-28 12:33 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 12/19] perf metric: Add events for the current list Jiri Olsa
2020-07-19 22:34 ` Ian Rogers
2020-07-26 9:19 ` kajoljain
2020-07-28 12:33 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 13/19] perf metric: Add cache_miss_cycles to metric parse test Jiri Olsa
2020-07-26 9:19 ` kajoljain
2020-07-28 12:34 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 14/19] perf metric: Add DCache_L2 " Jiri Olsa
2020-07-26 9:19 ` kajoljain
2020-07-28 12:34 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 15/19] perf metric: Add recursion check when processing nested metrics Jiri Olsa
2020-07-19 22:40 ` Ian Rogers
2020-07-26 9:20 ` kajoljain
2020-07-28 12:35 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 16/19] perf metric: Make compute_single function more precise Jiri Olsa
2020-07-28 12:36 ` Arnaldo Carvalho de Melo
2020-07-28 17:26 ` Ian Rogers
2020-07-28 20:17 ` kajoljain
2020-07-29 11:08 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 17/19] perf metric: Add metric group test Jiri Olsa
2020-07-19 22:41 ` Ian Rogers
2020-07-26 9:20 ` kajoljain
2020-07-28 12:37 ` Arnaldo Carvalho de Melo
2020-07-19 18:13 ` [PATCH 18/19] perf metric: Rename struct egroup to metric Jiri Olsa
2020-07-26 9:20 ` kajoljain
2020-07-19 18:13 ` [PATCH 19/19] perf metric: Rename group_list to metric_list Jiri Olsa
2020-07-19 22:42 ` Ian Rogers
2020-07-26 9:21 ` kajoljain
2020-07-28 12:38 ` Arnaldo Carvalho de Melo
2020-07-20 6:44 ` [PATCHv3 00/19] perf metric: Add support to reuse metric kajoljain
2020-07-20 7:22 ` Jiri Olsa
2020-07-20 8:09 ` kajoljain
2020-07-20 8:19 ` Jiri Olsa
2020-07-20 9:02 ` kajoljain
2020-07-20 19:16 ` Jiri Olsa
2020-07-24 5:52 ` kajoljain
2020-07-25 11:51 ` Jiri Olsa
2020-07-26 9:14 ` kajoljain
2020-07-28 12:39 ` Arnaldo Carvalho de Melo
2020-07-28 12:54 ` Jiri Olsa
2020-07-28 13:01 ` Jiri Olsa
2020-07-28 13:34 ` [PATCHv3 20/19] perf metric: Fix runtime metric for powerpc Jiri Olsa
2020-07-28 15:22 ` [PATCHv3 00/19] perf metric: Add support to reuse metric Arnaldo Carvalho de Melo
2020-07-21 14:48 ` Paul A. Clarke
2020-07-22 18:11 ` Jiri Olsa [this message]
2020-07-23 15:59 ` Paul A. Clarke
2020-07-25 11:52 ` Jiri Olsa
2020-07-28 12:42 ` Arnaldo Carvalho de Melo
2020-07-23 17:14 ` Paul A. Clarke
2020-07-23 17:40 ` Andi Kleen
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