ADSM-L

Direct I/O Performance v5.1

2002-10-30 12:51:05
Subject: Direct I/O Performance v5.1
From: Dan Giles <dangiles AT SYMPATICO DOT CA>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Wed, 30 Oct 2002 12:27:35 -0500
Hi everyone.

We're planning to upgrade to 5.1 in about 5-6 months. I was wondering if anyone 
has done any performance testing with the direct i/o option?

I have seen marked improvements in storage pools when using jfs volumes and 
read-ahead vs. raw volumes. Has anyone done any tests with jfs/read-ahead vs. 
direct i/o?

Thanks.

Daniel R. Giles
Sigel Consulting Inc.
416.402.9744  dangiles AT sympatico DOT ca

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