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From: Andi Kleen <andi@firstfloor.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>,
	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 08:10:08 -0700	[thread overview]
Message-ID: <20160406151008.GA9407@two.firstfloor.org> (raw)
In-Reply-To: <20160406143220.GD5945@kernel.org>

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 ?

-Andi

  reply	other threads:[~2016-04-06 15:10 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 [this message]
2016-04-06 15:14       ` Arnaldo Carvalho de Melo
  -- 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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