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From: Jiri Olsa <jolsa@redhat.com>
To: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Kan Liang <kan.liang@linux.intel.com>,
	Agustin Vega-Frias <agustinv@codeaurora.org>,
	lkml <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	David Ahern <dsahern@gmail.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Stephane Eranian <eranian@google.com>,
	Milian Wolff <milian.wolff@kdab.com>,
	Andi Kleen <andi@firstfloor.org>,
	Frederic Weisbecker <frederic@kernel.org>
Subject: Re: [PATCH 01/10] perf tools: Uniquify the event name if there's no other matched event
Date: Thu, 7 Jun 2018 08:22:39 +0200	[thread overview]
Message-ID: <20180607062239.GA18436@krava> (raw)
In-Reply-To: <20180606231902.GE7220@tassilo.jf.intel.com>

On Wed, Jun 06, 2018 at 04:19:02PM -0700, Andi Kleen wrote:
> On Thu, Jun 07, 2018 at 12:15:04AM +0200, Jiri Olsa wrote:
> > Currently by default we try to match the user specified PMU
> > name to all PMU units available and use them to aggregate
> > all matched PMUs event counts into one 'pattern' event.
> > 
> > While this is useful for uncore events, it screws up names
> > for other events, where this is not desirable, like:
> > 
> > Before:
> >   # perf stat -e cp/cpu-cycles/ kill
> 
> I assume you mean cpU/cpu-cycles/
> > 
> >    Performance counter stats for 'kill':
> > 
> >            1,573,757      cp/cpu-cycles/
> > 
> > Keeping the pattern matching logic, but making the name unique
> > in case there's no other match found. That fixes the example
> > above and hopefully does not screw up anything else.
> > 
> > After:
> >   # perf stat -e cp/cpu-cycles/ kill
> > 
> >    Performance counter stats for 'kill':
> > 
> >            1,573,757      cpu/cpu-cycles/
> 
> 
> The output is 100% identical?

nope, the U is actualy missing.. that's the thing, the patern
matching allows you to put 'cp' instead of 'cpu' and the final
output is screwed.. also the metrics won't match the proper event

jirka

  reply	other threads:[~2018-06-07  6:22 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-06 22:15 [RFC 00/10] perf: Add cputime events/metrics Jiri Olsa
2018-06-06 22:15 ` [PATCH 01/10] perf tools: Uniquify the event name if there's no other matched event Jiri Olsa
2018-06-06 23:19   ` Andi Kleen
2018-06-07  6:22     ` Jiri Olsa [this message]
2018-06-07 16:09       ` Stephane Eranian
2018-06-08  0:06         ` Jiri Olsa
2018-06-06 22:15 ` [PATCH 02/10] perf tools: Fix error index for pmu event parser Jiri Olsa
2018-06-07 18:53   ` Arnaldo Carvalho de Melo
2018-06-14  6:21   ` [tip:perf/urgent] " tip-bot for Jiri Olsa
2018-06-06 22:15 ` [PATCH 03/10] perf stat: Add --interval-clear option Jiri Olsa
2018-06-07 18:57   ` Arnaldo Carvalho de Melo
2018-06-14  6:21   ` [tip:perf/urgent] " tip-bot for Jiri Olsa
2018-06-06 22:15 ` [PATCH 04/10] perf stat: Use only color_fprintf call in print_metric_only Jiri Olsa
2018-06-07 19:00   ` Arnaldo Carvalho de Melo
2018-06-14  6:22   ` [tip:perf/urgent] " tip-bot for Jiri Olsa
2018-06-06 22:15 ` [PATCH 05/10] perf stat: Fix metric column display Jiri Olsa
2018-06-07 19:00   ` Arnaldo Carvalho de Melo
2018-06-14  6:22   ` [tip:perf/urgent] perf stat: Fix metric column header display alignment tip-bot for Jiri Olsa
2018-06-06 22:15 ` [PATCH 06/10] perf stat: Allow to specify specific metric column len Jiri Olsa
2018-06-14  6:23   ` [tip:perf/urgent] " tip-bot for Jiri Olsa
2018-06-06 22:15 ` [PATCH 07/10] perf stat: Add event parsing error handling to add_default_attributes Jiri Olsa
2018-06-07 19:04   ` Arnaldo Carvalho de Melo
2018-06-07 19:05     ` Arnaldo Carvalho de Melo
2018-06-14  6:23   ` [tip:perf/urgent] " tip-bot for Jiri Olsa
2018-06-06 22:15 ` [PATCH 08/10] perf/cputime: Add cputime pmu Jiri Olsa
2018-06-06 22:15 ` [PATCH 09/10] perf/cputime: Don't stop idle tick if there's live cputime event Jiri Olsa
2018-06-07 15:45   ` Andi Kleen
2018-06-07 16:01     ` Stephane Eranian
2018-06-08  0:12       ` Jiri Olsa
2018-06-06 22:15 ` [PATCH 10/10] perf stat: Add cputime metric support Jiri Olsa
2018-06-06 23:10 ` [RFC 00/10] perf: Add cputime events/metrics Andi Kleen
2018-09-26 14:44   ` Milian Wolff
2018-09-26 21:48     ` Jiri Olsa

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