linux-kernel - Re: sysprof in 2.6.27 kernel

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Message-ID: <ye84p5l7jwp.fsf@camel28.daimi.au.dk>
Date:	16 Aug 2008 04:50:30 +0200
From:	Soeren Sandmann <sandmann@...mi.au.dk>
To:	Lukas Hejtmanek <xhejtman@....muni.cz>
Cc:	linux-kernel@...r.kernel.org, mingo@...hat.com
Subject: Re: sysprof in 2.6.27 kernel

Lukas Hejtmanek <xhejtman@....muni.cz> writes:

> On Thu, Aug 14, 2008 at 01:23:16AM +0200, Soeren Sandmann wrote:
> > It's somewhat rough still. If you try it out, I will be interested in
> > any feedback you have.
> 
> another feedback. I got No map at all processes even at those I got debug info
> installed.

This may be because sysprof user space is not running as root, or it
may be because the kernel is generating bogus addresses. 

Generally, "No Map" means sysprof is seeing samples in memory regions
that are not in /proc/<pid>/maps



Soren
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