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From: Borislav Petkov <bp@amd64.org>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Borislav Petkov <bp@amd64.org>,
	Arnaldo Carvalho de Melo <acme@infradead.org>,
	Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: Funny perf
Date: Wed, 23 Feb 2011 13:29:04 +0100	[thread overview]
Message-ID: <20110223122904.GA3935@aftab> (raw)
In-Reply-To: <1298456508.2217.357.camel@twins>

On Wed, Feb 23, 2011 at 05:21:48AM -0500, Peter Zijlstra wrote:
> On Thu, 2011-02-17 at 19:26 +0100, Borislav Petkov wrote:
> > 
> > so this looks like some of the samples do not belong in the perf.data
> > output with that garbled cpu field. It lets me also assume that the
> > sample->time field is also crap so the timestamp check is falsely
> > tripped. 
> 
> Most interesting, I haven't tried to reproduce, but it does sound
> smelly.
> 
> I did have a quick peek at some code I suspected but that all seems in
> order. I guess someone will have to sit down and figure this out proper,
> if nobody steps up I guess it'll have to be me, but that also means it
> might take a while since I've got some other pending stuff to stare at
> before this :/

Same here, I'll try to play with this a bit more when I get a free
window. I think the first step should be if someone else tries
reproducing this to see whether it really is reproducible or there's
something wrong with my setup.

Thanks.

-- 
Regards/Gruss,
Boris.

Advanced Micro Devices GmbH
Einsteinring 24, 85609 Dornach
General Managers: Alberto Bozzo, Andrew Bowd
Registration: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632

      parent reply	other threads:[~2011-02-23 12:28 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-02-17 18:26 Funny perf Borislav Petkov
2011-02-23 10:21 ` Peter Zijlstra
2011-02-23 11:53   ` Arnaldo Carvalho de Melo
2011-02-23 12:29   ` Borislav Petkov [this message]

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