This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


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
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <200922695542.348864@leena>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <200922695542.348864@leena>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
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.

Xen-users mailing list