From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Andi Kleen <andi@firstfloor.org>
Cc: peterz@infradead.org, jolsa@kernel.org,
linux-kernel@vger.kernel.org, mingo@kernel.org,
Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH 11/11] perf, tools, stat: Add extra output of counter values with -v
Date: Wed, 6 Apr 2016 12:14:01 -0300 [thread overview]
Message-ID: <20160406151401.GE5945@kernel.org> (raw)
In-Reply-To: <20160406151008.GA9407@two.firstfloor.org>
Em Wed, Apr 06, 2016 at 08:10:08AM -0700, Andi Kleen escreveu:
> On Wed, Apr 06, 2016 at 11:32:20AM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Mon, Apr 04, 2016 at 01:41:54PM -0700, Andi Kleen escreveu:
> > > From: Andi Kleen <ak@linux.intel.com>
> > >
> > > Add debug output of raw counter values per CPU when
> > > perf stat -v is specified, together with their cpu numbers.
> > > This is very useful to debug problems with per core counters,
> > > where we can normally only see aggregated values.
> >
> > Can we do it only when per CPU is in place?
>
> Even then it is useful because the output is aggregated,
> so we don't know which CPU reported what.
>
> Can perhaps increase the verbose threshold and only
> print it for -vv or -vvv ?
Yeah, that would be better, this way people will not get two identical
lines for a common usecase when using -v.
- Arnaldo
next prev parent reply other threads:[~2016-04-06 15:16 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-04 20:41 Add top down metrics to perf stat Andi Kleen
2016-04-04 20:41 ` [PATCH 01/11] x86, perf: Support sysfs files depending on SMT status Andi Kleen
2016-04-04 20:41 ` [PATCH 02/11] x86, perf: Add Top Down events to Intel Core Andi Kleen
2016-04-04 20:41 ` [PATCH 03/11] x86, perf: Add Top Down events to Intel Atom Andi Kleen
2016-04-04 20:41 ` [PATCH 04/11] x86, perf: Use new ht_on flag in HT leak workaround Andi Kleen
2016-04-04 20:41 ` [PATCH 05/11] perf, tools: Parse an .aggr-per-core event attribute Andi Kleen
2016-04-04 20:41 ` [PATCH 06/11] perf, tools, stat: Force --per-core mode for .aggr-per-core aliases Andi Kleen
2016-04-04 20:41 ` [PATCH 07/11] perf, tools, stat: Avoid fractional digits for integer scales Andi Kleen
2016-04-04 20:41 ` [PATCH 08/11] perf, tools, stat: Scale values by unit before metrics Andi Kleen
2016-04-04 20:41 ` [PATCH 09/11] perf, tools, stat: Basic support for TopDown in perf stat Andi Kleen
2016-04-04 20:41 ` [PATCH 10/11] perf, tools, stat: Add computation of TopDown formulas Andi Kleen
2016-04-04 20:41 ` [PATCH 11/11] perf, tools, stat: Add extra output of counter values with -v Andi Kleen
2016-04-06 14:32 ` Arnaldo Carvalho de Melo
2016-04-06 15:10 ` Andi Kleen
2016-04-06 15:14 ` Arnaldo Carvalho de Melo [this message]
-- strict thread matches above, loose matches on Subject: below --
2016-03-22 23:08 Add top down metrics to perf stat Andi Kleen
2016-03-22 23:08 ` [PATCH 11/11] perf, tools, stat: Add extra output of counter values with -v Andi Kleen
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