From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Matt Mackall <mpm@selenic.com>
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
clameter@sgi.com
Subject: Re: + fix-spellings-of-slab-allocator-section-in-init-kconfig.patch added to -mm tree
Date: Wed, 9 May 2007 01:32:20 +0100 [thread overview]
Message-ID: <20070509013220.02093f2e@the-village.bc.nu> (raw)
In-Reply-To: <20070509002307.GV11115@waste.org>
> (without SLAB emulation) and fragmentation was not the driving force
> for replacement. Small Linux 1.x machines frequently had uptimes of 1+
> years without fragmenting to death. Instead, it was performance with
8MB for a bit over 3 years.... (1.2.13lmp)
The fragmentation issue I think is overbaked. A lot of the academic work
argues that there is pretty much no long term difference between first
fit, best fit, and most of the clever algorithms (obviously stupid ones
like "take the middle out of the biggest space allocator" do perform
worse). For MMUless boxes fragmentation is a big issue but not for normal
systems.
Alan
next prev parent reply other threads:[~2007-05-09 0:28 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200705082302.l48N2KrZ004229@shell0.pdx.osdl.net>
2007-05-09 0:23 ` Matt Mackall
2007-05-09 0:32 ` Alan Cox [this message]
2007-05-09 0:33 ` Matt Mackall
2007-05-09 0:43 ` Christoph Lameter
2007-05-09 0:51 ` Christoph Lameter
2007-05-09 1:27 ` Matt Mackall
2007-05-09 1:32 ` Christoph Lameter
2007-05-09 1:51 ` David Miller
2007-05-09 1:53 ` Christoph Lameter
2007-05-09 1:55 ` David Miller
2007-05-09 1:57 ` Christoph Lameter
2007-05-09 2:06 ` David Miller
2007-05-09 2:10 ` Nick Piggin
2007-05-09 2:20 ` Christoph Lameter
2007-05-09 2:02 ` Nick Piggin
2007-05-09 2:56 ` Matt Mackall
2007-05-09 3:18 ` Nick Piggin
2007-05-09 3:27 ` Christoph Lameter
2007-05-09 3:47 ` Nick Piggin
2007-05-10 0:42 ` Andrew Morton
2007-05-10 1:00 ` Nick Piggin
2007-05-10 2:27 ` Matt Mackall
2007-05-09 2:19 ` Matt Mackall
2007-05-09 2:24 ` Christoph Lameter
2007-05-09 2:43 ` Nick Piggin
2007-05-09 2:57 ` Christoph Lameter
2007-05-09 3:04 ` Nick Piggin
2007-05-09 3:08 ` Christoph Lameter
2007-05-09 3:25 ` Matt Mackall
2007-05-09 3:16 ` Matt Mackall
2007-05-09 3:24 ` Christoph Lameter
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