linux-kernel - Re: [PATCH 11/11] perf, tools, stat: Add extra output of counter values with -v

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Message-ID: <20160406151008.GA9407@two.firstfloor.org>
Date:	Wed, 6 Apr 2016 08:10:08 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Andi Kleen <andi@...stfloor.org>, peterz@...radead.org,
	jolsa@...nel.org, linux-kernel@...r.kernel.org, mingo@...nel.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 11/11] perf, tools, stat: Add extra output of counter
 values with -v

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@...ux.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