linux-kernel - Re: Major regression on hackbench with SLUB

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Message-ID: <20071207175527.GA19173@elte.hu>
Date:	Fri, 7 Dec 2007 18:55:27 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Christoph Lameter <clameter@....com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Christoph Hellwig <hch@...radead.org>
Subject: Re: Major regression on hackbench with SLUB


* Steven Rostedt <rostedt@...dmis.org> wrote:

> The regression is that hackbench slows down tremendously. It goes from 
> running just under 2 seconds to running around 14 seconds.

ouch ...

it might make sense to check the SLUB patches from -mm ontop of vanilla 
as well - while that might be of little comfort as far as 2.6.24 goes, 
it at least gives us the info whether this is something that has been 
fixed in the latest SLUB code.

	Ingo
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