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Re: [Xen-users] Can affect the virtualization the samba performance?

To: kazabe <kazabe@xxxxxxxxx>
Subject: Re: [Xen-users] Can affect the virtualization the samba performance?
From: "Fajar A. Nugraha" <list@xxxxxxxxx>
Date: Thu, 25 Nov 2010 07:27:04 +0700
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On Thu, Nov 25, 2010 at 6:12 AM, kazabe <kazabe@xxxxxxxxx> wrote:
> Im evaluating request a dedicated disk to the samba virtual server,
> but before i need confirm if the problem is really by disk
> performance.

Run omething like "iostat -mx 3" on the virtual server. If disk
utilization is often close to 100%, then you have the culprit.

Sometimes you don't necessarily need to have a dedicated disk. You
have to make sure that it's used optimally. e.g:
- whenever possible, don't use HVM guest. Use PV guests instead.
- use block device (partition, LVM, whole disk) instead of file-backed image
- when you have to use file-backed image, use tap:aio instead of file:/


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