linux-kernel - Re: tbench regression - Why process scheduler has impact on tbench and why small per-cpu slab (SLUB) cache creates the scenario?

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Message-ID: <Pine.LNX.4.64.0709201051350.8509@schroedinger.engr.sgi.com>
Date:	Thu, 20 Sep 2007 10:53:02 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	"Siddha, Suresh B" <suresh.b.siddha@...el.com>
cc:	Nick Piggin <nickpiggin@...oo.com.au>,
	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, mingo@...e.hu,
	Mel Gorman <mel@...net.ie>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Matthew.R.wilcox@...el.com
Subject: Re: tbench regression - Why process scheduler has impact on tbench
 and why small per-cpu slab (SLUB) cache creates the scenario?

On Tue, 18 Sep 2007, Siddha, Suresh B wrote:

> For now, we are trying to do slab Vs slub comparisons for the mainline kernels.
> Let's see how that goes.
> 
> Meanwhile, any chance that you can point us at relevant recent patches/fixes
> that are in -mm and perhaps that can be applied to mainline kernel?

Those can be found in the performance branch of the slab git tree.

See 
http://git.kernel.org/?p=linux/kernel/git/christoph/slab.git;a=log;h=performance
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