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Hard Drive Cache Size and XFS Performance

To: Linux-XFS Mailing List <linux-xfs@xxxxxxxxxxx>
Subject: Hard Drive Cache Size and XFS Performance
From: Federico Sevilla III <jijo@xxxxxxxxxxx>
Date: Wed, 30 Jun 2004 08:51:39 +0800
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Hi everyone,

Please pardon this very basic question.

For single-hard-drive IDE systems with write cache disabled, how
significantly does a hard drive's cache size affect the performance of
XFS, all other factors being equal?

We're evaluating hard drives and are comparing two identical Seagate
7200RPM drives, the only differences between them being the cache size
(2MB vs 8MB) and price. Does XFS benefit from a modern hard drive's use
of its internal cache read-ahead only (since write caching is disabled)?

Thank you very much. :)

 --> Jijo

Federico Sevilla III : jijo.free.net.ph : When we speak of free software
GNU/Linux Specialist : GnuPG 0x93B746BE : we refer to freedom, not price.

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