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Message-ID: <3D9326AF.4050803@colorfullife.com>
Date: Thu, 26 Sep 2002 17:24:31 +0200
From: Manfred Spraul <manfred@colorfullife.com>
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To: William Lee Irwin III <wli@holomorphy.com>
CC: Andrew Morton <akpm@digeo.com>, Ed Tomlinson <tomlins@cam.org>,
       linux-kernel@vger.kernel.org
Subject: Re: [patch 3/4] slab reclaim balancing
References: <3D931608.3040702@colorfullife.com> <20020926142054.GR3530@holomorphy.com>
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William Lee Irwin III wrote:
> 
> This might need testing on large-memory 64-bit boxen for that, since
> ZONE_NORMAL pressure outweighs many other considerations on my boxen.
> 

Most of them will be SMP, correct? For SMP, 95% of the memory operations 
occur in the per-cpu arrays. I'm not sure if a slab is really the right 
backend behind the per-cpu arrays - perhaps a algorithms that's more 
aggressive toward finding freeable pages would be a better choice, even 
if it needs more cpu time for sorting/searching through the partially 
allocated pages.

--
	Manfred

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