linux-kernel - Re: [PATCH] slub: prefetch next freelist pointer in slab

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Message-ID: <alpine.LFD.2.02.1201242152480.1658@tux.localdomain>
Date:	Tue, 24 Jan 2012 21:54:38 +0200 (EET)
From:	Pekka Enberg <penberg@...nel.org>
To:	Christoph Lameter <cl@...ux.com>
cc:	Eric Dumazet <eric.dumazet@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	David Rientjes <rientjes@...gle.com>,
	"Alex,Shi" <alex.shi@...el.com>, Shaohua Li <shaohua.li@...el.com>,
	Matt Mackall <mpm@...enic.com>
Subject: Re: [PATCH] slub: prefetch next freelist pointer in slab_alloc()

On Fri, 16 Dec 2011, Eric Dumazet wrote:
>> Recycling a page is a problem, since freelist link chain is hot on
>> cpu(s) which freed objects, and possibly very cold on cpu currently
>> owning slab.

On Fri, 16 Dec 2011, Christoph Lameter wrote:
> Good idea. How do the tcp benchmarks look after this?
>
> Looks sane.
>
> Acked-by: Christoph Lameter <cl@...ux.com>

Applied, thanks!
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