linux-kernel - Re: How to use perf to log page faults

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Message-ID: <20100512195945.GE10028@nowhere>
Date:	Wed, 12 May 2010 21:59:49 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Taras Glek <tglek@...illa.com>
Cc:	lkml <linux-kernel@...r.kernel.org>
Subject: Re: How to use perf to log page faults

On Wed, May 12, 2010 at 12:38:30PM -0700, Taras Glek wrote:
> Hi,
> From the docs it seems that perf may be useful for logging page faults.  
> I tried
> perf record -g -d -f -e page-faults <mycommand>
> but all I got were PERF_RECORD_MMAP events.
>
> I'm using 2.6.32. Ideally I'd like to collect fault addresses and  
> userspace stacks that caused them. Isn't this what the page-fault event  
> is for?
>
> Taras


Could you try with -c 1 ?

Otherwise, does that work on the latest kernel?

Thanks.

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