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] How many guests

To: Michael Schmidt <michael.schmidt@xxxxxxxxxx>, Xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] How many guests
From: Jonathan Tripathy <jonnyt@xxxxxxxxxxx>
Date: Sun, 06 Jun 2010 19:45:38 +0100
Delivery-date: Sun, 06 Jun 2010 11:46:56 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <4C0BEB56.4040507@xxxxxxxxxx>
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: <4C0AD5A6.9040307@xxxxxxxxxxx> <4C0BEB56.4040507@xxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20100423 Thunderbird/3.0.4
Hi Michael,

Thanks for your email.

This is just an idea that I have floating around in my head that maybe I'd like to rent out some VPSs to customers, just to utilise my machine which will be sitting in a co-lo nearly idle.

I'd give out VPSs with 256MB RAM and probably 5Mbps connection speed.

So the answer is, I don't know what will be running on them, however I could write up an "acceptable use policy", as well as use some throttling/scheduling?


On 06/06/10 19:39, Michael Schmidt wrote:
Hi Jonathan,

the question is, what a kind of VM?
You can over-utilize a much greater machine with one VM.
Or on the other side, you can run 40 VMs on a shorter machine.

Each ressource can be a bottleneck

- Memory - this is realy easy to calculate: Avaiable minus 768MB (Reserved for Dom0 should be enugh in this case).
- CPU - Here we need a VM statistic
- Disk Bandwidth - Here we need a VM statistic, but in the most cases not the bottleneck - Disk IOPS - Here we need a VM statistic, in the most cases the botelneck

What a kind of VMs you plane to run?
Webservers / mailservers / database-servers ...?

Best Regards

Michael Schmidt

Am 06.06.10 00:54, schrieb Jonathan Tripathy:
Hi Everyone,

I have a Dell R210 server which has a Xeon X3430 Quad Core CPU (2.4Ghz x 4) with 8GB of RAM. I intend to use the H200 controller in a RAID1 setup

How many VMs do you think I'd be able to run on this machine? Is 20 pushing it?

I'd say most (if not all) guests would be in PV mode.


Xen-users mailing list

Xen-users mailing list

<Prev in Thread] Current Thread [Next in Thread>