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Re: [Xen-devel] How much memory does a domain REALLY use...

  • To: "Graham, Simon" <Simon.Graham@xxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
  • Date: Sat, 24 Feb 2007 19:22:05 +0000
  • Delivery-date: Sat, 24 Feb 2007 11:21:33 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcdXsilmiwy4S98FTPqiaqV0JXsxkgAQHcfAAAqZ8FAAAHkC6QAJotZwAADmbD8=
  • Thread-topic: [Xen-devel] How much memory does a domain REALLY use...

On 24/2/07 19:14, "Graham, Simon" <Simon.Graham@xxxxxxxxxxx> wrote:

> Hmm - it does indeed seem to be somewhat dependent on the size of the
> machine; I have a bunch of systems from 2GB to 16GB all of which are
> running a 768MB Dom0 currently; here's what I see for used memory
> (total/free as reported by xenstat) for some of these when just Dom0 is
> running:
> . 2GB system; 794MB used
> . 6GB system; 830MB used
> . 8GB system; 840MB used
> . 16GB system; 890MB used

Yes, there's an overhead of 7MB per 1GB on i386, and 12MB per 1GB on x86/64.

 -- Keir

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