linux-kernel - Re: [patch 21/21] slab defrag: Obsolete SLAB

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Date:	Thu, 15 May 2008 20:29:26 +0200
From:	"Vegard Nossum" <vegard.nossum@...il.com>
To:	"Matthew Wilcox" <matthew@....cx>
Cc:	"Christoph Lameter" <clameter@....com>,
	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>,
	"Andi Kleen" <andi@...stfloor.org>,
	"Pekka Enberg" <penberg@...helsinki.fi>,
	"KOSAKI Motohiro" <kosaki.motohiro@...fujitsu.com>,
	"Rik van Riel" <riel@...hat.com>, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	"Mel Gorman" <mel@...net.ie>, mpm@...enic.com
Subject: Re: [patch 21/21] slab defrag: Obsolete SLAB

On Thu, May 15, 2008 at 7:49 PM, Matthew Wilcox <matthew@....cx> wrote:
> On Thu, May 15, 2008 at 10:05:35AM -0700, Christoph Lameter wrote:
>> Thanks for using the slab statistics. I wish I had these numbers for the
>> TPC benchmark. That would allow us to understand what is going on while it
>> is running.
>
> Hang on, you want slab statistics for the TPC run?  You didn't tell me
> that.  We're trying to gather oprofile data (and having trouble because
> the machine crashes when we start using oprofile -- this is with the git
> tree you/pekka put together for us to test).

Hi,

oprofile was recently fixed, maybe try cherry-picking these will help:

http://git.kernel.org/?p=linux/kernel/git/smurf/linux-trees.git;a=commit;h=7ded2dcf5f2c30889d7ac743ed64fff272ec190d
http://git.kernel.org/?p=linux/kernel/git/smurf/linux-trees.git;a=commit;h=08bc5caced1f322255f44880529a651e204a38eb
http://git.kernel.org/?p=linux/kernel/git/smurf/linux-trees.git;a=commit;h=2b56af59ed24d25be0282de9ae98c290e03a7dd9

Vegard

-- 
"The animistic metaphor of the bug that maliciously sneaked in while
the programmer was not looking is intellectually dishonest as it
disguises that the error is the programmer's own creation."
	-- E. W. Dijkstra, EWD1036
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