On a 4GB machine how much memory should I expect to be able to alot to
guests? Assume for the sake of the discussion that I''m trying to run 5
domUs.
-Kip
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
On 27 Apr 2005, at 16:20, Kip Macy wrote:> On a 4GB machine how much memory should I expect to be able to alot to > guests? Assume for the sake of the discussion that I''m trying to run 5 > domUs.Xen will take 40MB. The rest is available for domains (inc. domain0). -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Chris Wedgwood
2005-Apr-27 23:50 UTC
Re: [Xen-devel] how much memory does xen itself need?
On Wed, Apr 27, 2005 at 04:30:58PM +0100, Keir Fraser wrote:> Xen will take 40MB. The rest is available for domains > (inc. domain0).Hmm... this has increased over time. Is there a breakdown of what the 40MB is used for? _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On 28 Apr 2005, at 00:50, Chris Wedgwood wrote:> On Wed, Apr 27, 2005 at 04:30:58PM +0100, Keir Fraser wrote: > >> Xen will take 40MB. The rest is available for domains >> (inc. domain0). > > Hmm... this has increased over time. Is there a breakdown of what the > 40MB is used for?This is only for a 4GB system. The breakdown is: 4MB: machine_to_phys table 12MB: Xen heap 24MB: frame_info for 4GB RAM If you have x gigabytes RAM, 32-bit non-PAE Xen will require (16+6x)MB. I think you can also reduce Xen''s heap size -- I added a boot-time option but it isn''t very tested. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel