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Re: XFS - Performance Optimazation.

To: Rob Creecy <rcreecy@xxxxxxxxxx>
Subject: Re: XFS - Performance Optimazation.
From: Andi Kleen <ak@xxxxxxx>
Date: Wed, 25 Apr 2001 20:52:57 +0200
Cc: Steve Lord <lord@xxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <3AE71ABE.82C0FBC@xxxxxxxxxx>; from rcreecy@xxxxxxxxxx on Wed, Apr 25, 2001 at 02:43:10PM -0400
References: <200104251515.f3PFFnb24856@xxxxxxxxxxxxxxxxxxxx> <3AE71ABE.82C0FBC@xxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
User-agent: Mutt/1.2.5i
On Wed, Apr 25, 2001 at 02:43:10PM -0400, Rob Creecy wrote:
> 2. What benchmark shows the near 100MB/s bandwidth? What performance
> should I expect
> from a simple dd if=junk of=/dev/null bs=xxx, with xxx optimized for
> stripe width.

For very high bandwidth you probably need to use O_DIRECT. dd doesn't set
that flag normally.


-Andi

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