linux-kernel - Re: [S+Q2 00/19] SLUB with queueing (V2) beats SLAB netperf TCP

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Message-ID: <4C3DA38A.7010003@kernel.org>
Date:	Wed, 14 Jul 2010 13:46:18 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Christoph Lameter <cl@...ux-foundation.org>
CC:	Heinz Diehl <htd@...cy-poultry.org>, linux-kernel@...r.kernel.org,
	Pekka Enberg <penberg@...helsinki.fi>, linux-mm@...ck.org,
	Nick Piggin <npiggin@...e.de>,
	David Rientjes <rientjes@...gle.com>
Subject: Re: [S+Q2 00/19] SLUB with queueing (V2) beats SLAB netperf TCP_RR

Hello,

On 07/12/2010 05:11 PM, Christoph Lameter wrote:
> You need a sufficient PERCPU_DYNAMIC_EARLY_SIZE to be configured. What
> platform is this? Tejon: You suggested the BUILD_BUG_ON(). How can he
> increase the early size?

The size is determined by PERCPU_DYNAMIC_EARLY_SIZE, so bumping it up
should do it but it would probably be wiser to bump
PERCPU_DYNAMIC_RESERVE too.  PERCPU_DYNAMIC_EARLY_SIZE is currently
12k.  How high should it be?

Thanks.

-- 
tejun
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