linux-kernel - Re: [PATCH v1 0/3] Metric related performance improvements

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Message-ID: <aCOe85iNjzgIW1B-@x1>
Date: Tue, 13 May 2025 16:35:15 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Namhyung Kim <namhyung@...nel.org>
Cc: Ian Rogers <irogers@...gle.com>, Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>, Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Kan Liang <kan.liang@...ux.intel.com>,
	James Clark <james.clark@...aro.org>, Xu Yang <xu.yang_2@....com>,
	John Garry <john.g.garry@...cle.com>,
	Dominique Martinet <asmadeus@...ewreck.org>,
	Thomas Richter <tmricht@...ux.ibm.com>,
	Weilin Wang <weilin.wang@...el.com>,
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 0/3] Metric related performance improvements

On Tue, May 13, 2025 at 04:34:28PM -0300, Arnaldo Carvalho de Melo wrote:
> On Wed, Apr 09, 2025 at 11:49:16PM -0700, Namhyung Kim wrote:
> > Great, I also see the speedup on my machine from 32s to 3s.

> > Tested-by: Namhyung Kim <namhyung@...nel.org>
 
> I'm collecting this for v2 as well, ok? Holler if you disagree.

BTW, in my workstation:

Before:

  root@...ber:~# time perf test "Parsing of PMU event table metrics"
   10.3: Parsing of PMU event table metrics                            : Ok
   10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

  real  0m9.286s
  user  0m9.354s
  sys   0m0.062s
  root@...ber:~#

After:

  root@...ber:~# time perf test "Parsing of PMU event table metrics"
   10.3: Parsing of PMU event table metrics                            : Ok
   10.4: Parsing of PMU event table metrics with fake PMUs             : Ok

  real  0m0.689s
  user  0m0.766s
  sys   0m0.042s
  root@...ber:~# time perf test 10
   10: PMU JSON event tests                                            :
   10.1: PMU event table sanity                                        : Ok
   10.2: PMU event map aliases                                         : Ok
   10.3: Parsing of PMU event table metrics                            : Ok
   10.4: Parsing of PMU event table metrics with fake PMUs             : Ok
   10.5: Parsing of metric thresholds with fake PMUs                   : Ok

  real  0m0.696s
  user  0m0.807s
  sys   0m0.064s
  root@...ber:~#