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From: Ian Rogers <irogers@google.com>
To: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Namhyung Kim <namhyung@kernel.org>,
	Song Liu <songliubraving@fb.com>,
	Andrii Nakryiko <andriin@fb.com>,
	Kajol Jain <kjain@linux.ibm.com>, Andi Kleen <ak@linux.intel.com>,
	John Garry <john.garry@huawei.com>,
	Jin Yao <yao.jin@linux.intel.com>,
	Kan Liang <kan.liang@linux.intel.com>,
	Cong Wang <xiyou.wangcong@gmail.com>,
	Kim Phillips <kim.phillips@amd.com>, Paul Clarke <pc@us.ibm.com>,
	Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Networking <netdev@vger.kernel.org>, bpf <bpf@vger.kernel.org>,
	linux-perf-users <linux-perf-users@vger.kernel.org>,
	Vince Weaver <vincent.weaver@maine.edu>,
	Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH 0/7] Share events between metrics
Date: Wed, 20 May 2020 07:50:30 -0700
Message-ID: <CAP-5=fXZVmjuiGyRsjzjfsBOpN50SeA+Gi66Of_wa61j7f6X5Q@mail.gmail.com> (raw)
In-Reply-To: <20200520131359.GJ157452@krava>

On Wed, May 20, 2020 at 6:14 AM Jiri Olsa <jolsa@redhat.com> wrote:
>
> On Wed, May 20, 2020 at 12:28:07AM -0700, Ian Rogers wrote:
> > Metric groups contain metrics. Metrics create groups of events to
> > ideally be scheduled together. Often metrics refer to the same events,
> > for example, a cache hit and cache miss rate. Using separate event
> > groups means these metrics are multiplexed at different times and the
> > counts don't sum to 100%. More multiplexing also decreases the
> > accuracy of the measurement.
> >
> > This change orders metrics from groups or the command line, so that
> > the ones with the most events are set up first. Later metrics see if
> > groups already provide their events, and reuse them if
> > possible. Unnecessary events and groups are eliminated.
> >
> > The option --metric-no-group is added so that metrics aren't placed in
> > groups. This affects multiplexing and may increase sharing.
> >
> > The option --metric-mo-merge is added and with this option the
> > existing grouping behavior is preserved.
> >
> > Using skylakex metrics I ran the following shell code to count the
> > number of events for each metric group (this ignores metric groups
> > with a single metric, and one of the duplicated TopdownL1 and
> > TopDownL1 groups):
>
> hi,
> I'm getting parser error with:
>
> [jolsa@krava perf]$ sudo ./perf stat -M IPC,CPI -a -I 1000
> event syntax error: '..ed.thread}:W{inst_retired.any,cpu_clk_unhalted.thread}:W,{inst_retired.any,cycles}:W'
>                                   \___ parser error
>
> jirka

Ah, looks like an issue introduced by:
https://lore.kernel.org/lkml/20200520072814.128267-8-irogers@google.com/
as there is a missing comma. I'll investigate after some breakfast.

Thanks,
Ian

      reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-20  7:28 Ian Rogers
2020-05-20  7:28 ` [PATCH 1/7] perf metricgroup: Change evlist_used to a bitmap Ian Rogers
2020-05-20 13:14   ` Jiri Olsa
2020-05-20 13:35     ` Arnaldo Carvalho de Melo
2020-05-20  7:28 ` [PATCH 2/7] perf metricgroup: Always place duration_time last Ian Rogers
2020-05-20  7:28 ` [PATCH 3/7] perf metricgroup: Delay events string creation Ian Rogers
2020-05-20 13:14   ` Jiri Olsa
2020-05-20 18:22     ` Ian Rogers
2020-05-20 20:34       ` Arnaldo Carvalho de Melo
2020-05-20 22:10         ` Jiri Olsa
2020-05-20  7:28 ` [PATCH 4/7] perf metricgroup: Order event groups by size Ian Rogers
2020-05-20  7:28 ` [PATCH 5/7] perf metricgroup: Remove duped metric group events Ian Rogers
2020-05-20 13:48   ` Jiri Olsa
2020-05-20 16:50     ` Ian Rogers
2020-05-20 22:09       ` Jiri Olsa
2020-05-20 22:42         ` Ian Rogers
2020-05-21 10:54           ` Jiri Olsa
2020-05-21 17:26             ` Ian Rogers
2020-05-21 17:28               ` Arnaldo Carvalho de Melo
2020-05-20  7:28 ` [PATCH 6/7] perf metricgroup: Add options to not group or merge Ian Rogers
2020-05-20  7:28 ` [PATCH 7/7] perf metricgroup: Remove unnecessary ',' from events Ian Rogers
2020-05-20 13:13 ` [PATCH 0/7] Share events between metrics Jiri Olsa
2020-05-20 14:50   ` Ian Rogers [this message]

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