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Re: [Xen-devel] How much memory does a domain REALLY use...
| To: | Xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | Re: [Xen-devel] How much memory does a domain REALLY use... |
| From: | nick@xxxxxxxxxxxxxx (Nick Craig-Wood) |
| Date: | Mon, 26 Feb 2007 14:48:39 +0000 |
| Cc: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Delivery-date: | Mon, 26 Feb 2007 06:48:01 -0800 |
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| In-reply-to: | <C20890CD.A206%keir@xxxxxxxxxxxxx> |
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Keir Fraser <keir@xxxxxxxxxxxxx> wrote: > On 26/2/07 12:41, "Nick Craig-Wood" <nick@xxxxxxxxxxxxxx> wrote: > >> Yes, there's an overhead of 7MB per 1GB on i386, and 12MB per 1GB > >> on x86/64. > > > > Some time ago (xen 3.0.2 I think) I measured the overhead on i386 to be > > > > 12 MB per domain > > Do you mean 12MB static overhead for Xen itself? There is no 12MB overhead > per guest, unless you are talking about HVM guests in which case there is > some shadow-pagetable overhead (I'm not sure it's as much as 12MB > though). Yes 12 MB for Xen is what I meant, not per domain - sorry! > > plus 6MB per GB host RAM > > > > I guess it has gone up since the above figures fit the 7MB amount much > > better -- Nick Craig-Wood <nick@xxxxxxxxxxxxxx> -- http://www.craig-wood.com/nick _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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