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Re: [Xen-users] DNS servers as guests?

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] DNS servers as guests?
From: Simon Hobson <linux@xxxxxxxxxxxxxxxx>
Date: Thu, 26 Feb 2009 16:56:48 +0000
Delivery-date: Thu, 26 Feb 2009 09:00:13 -0800
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lists@xxxxxxxxxxxx wrote:
Anyone running DNS servers as guests? Seems too slow unless I'm missing something. I can always keep secondary backup DNS servers as guests but as primaries, seems slow?

No problem here. At work I host about 600 zones on one primary server, single 2.4GHz vcpu (not dedicated), 256M RAM, around 32k queries/hour. Just done a few tests and got response times between 9 and 180 ms.

On the same physical server, I also run a resolver in a separate DomU. Again a non-dedicated single 2.4G vcpu, but 521M RAM - currently doing about 16k queries/hr but it does peak a lot higher. Again, no problem with performance.

--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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