linux-kernel - Re: [RFC PATCH 1/4] kmemtrace: Core implementation.

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Date:	Fri, 18 Jul 2008 02:49:01 +0300
From:	Eduard - Gabriel Munteanu <eduard.munteanu@...ux360.ro>
To:	Randy Dunlap <rdunlap@...otime.net>
Cc:	penberg@...helsinki.fi, cl@...ux-foundation.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 1/4] kmemtrace: Core implementation.

On Thu, Jul 17, 2008 at 02:34:34PM -0700, Randy Dunlap wrote:
> On Thu, 17 Jul 2008 03:46:45 +0300 Eduard - Gabriel Munteanu wrote:
> 
> > +3) Boot the kmemtrace-enabled kernel if you haven't, preferably in the
> > +'single' runlevel (so that relay buffers don't fill up easily), and run
> > +kmemtrace:
> > +# '$' does not mean user, but root here.
> > +$ mount -t debugfs none /debug
> 
> Please mount at /sys/kernel/debug, i.e., the expected debugfs mount point.
> 

Oh, I did not know that. Thanks, will change accordingly.

> > +$ mount -t proc none /proc
> > +$ cd path/to/kmemtrace-user/
> > +$ ./kmemtraced
> > +Wait a bit, then stop it with CTRL+C.
> > +$ cat /debug/kmemtrace/total_overruns	# Check if we didn't overrun, should
> > +					# be zero.
> > +$ (Optionally) [Run kmemtrace_check separately on each cpu[0-9]*.out file to
> > +		check its correctness]
> > +$ ./kmemtrace-report
> > +
> > +Now you should have a nice and short summary of how the allocator performs.
> 
> 
> Otherwise looks nice.  Thanks.
> 
> ---
> ~Randy
> Linux Plumbers Conference, 17-19 September 2008, Portland, Oregon USA
> http://linuxplumbersconf.org/
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