From: David Chinner <dgc@sgi.com>
Date: Tue, 14 Mar 2006 02:13:09 +0000 (+1100)
Subject: [XFS] On machines with more than 8 cpus, when running parallel I/O
X-Git-Tag: v2.6.17-rc1~1000^2~69
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8d280b98cfe3c0b69c37d355218975c1c0279bb0;p=pandora-kernel.git

[XFS] On machines with more than 8 cpus, when running parallel I/O
threads, the incore superblock lock becomes the limiting factor for
buffered write throughput. Make the contended fields in the incore
superblock use per-cpu counters so that there is no global lock to limit
scalability.

SGI-PV: 946630
SGI-Modid: xfs-linux-melb:xfs-kern:25106a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
---

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