linux-kernel - Re: [RFC, PATCH] SLAB : [NUMA] keep nodeid in struct page instead of struct slab

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Message-ID: <Pine.LNX.4.64.0703210844300.3160@graphe.net>
Date:	Wed, 21 Mar 2007 08:44:53 -0700 (PDT)
From:	Christoph Lameter <christoph@...eter.com>
To:	Eric Dumazet <dada1@...mosbay.com>
cc:	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: [RFC, PATCH] SLAB : [NUMA] keep nodeid in struct page instead
 of struct slab

On Wed, 21 Mar 2007, Eric Dumazet wrote:

> On Wed, 21 Mar 2007 07:41:46 -0700 (PDT)
> Christoph Lameter <christoph@...eter.com> wrote:
> 
> > On Wed, 21 Mar 2007, Eric Dumazet wrote:
> > 
> > > In order to avoid a cache miss in kmem_cache_free() on NUMA and reduce hot path length, we could exploit the following common facts.
> > > 
> > > 1) MAX_NUMNODES <= 64
> > 
> > MAX_NUMNODES == 1024 on IA64 and may be on x86_64 in the future.
> 
> So what ? I am very happy for you Christoph.

You wanted to exploit that MAX_NUMNODES <= 64?
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