Is there any mechanism to give a.domU memory from dom0 swap? It would be neat/useful if we could utilize that to test things in a vm with more RAM than is.physically available. Obviously performance wouldn''t be.stellar.but it would still have some usefulness chris _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On Tue, 2011-10-25 at 01:30 +0100, chris wrote:> Is there any mechanism to give a.domU memory from dom0 swap? It would > be neat/useful if we could utilize that to test things in a vm with > more RAM than is.physically available. Obviously performance wouldn''t > be.stellar.but it would still have some usefulnessThe xenpaging feature which some folks are working on allows guest RAM to be swapped to a file in dom0. It lives in tools/xenpaging. There''s been loads of work on it since 4.1, mainly by Olaf Hering. Ian. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Cool thanks, I knew I couldn''t be the first to think of it :) I will check it out On Tue, Oct 25, 2011 at 4:04 AM, Ian Campbell <Ian.Campbell@citrix.com>wrote:> On Tue, 2011-10-25 at 01:30 +0100, chris wrote: > > Is there any mechanism to give a.domU memory from dom0 swap? It would > > be neat/useful if we could utilize that to test things in a vm with > > more RAM than is.physically available. Obviously performance wouldn''t > > be.stellar.but it would still have some usefulness > > The xenpaging feature which some folks are working on allows guest RAM > to be swapped to a file in dom0. > > It lives in tools/xenpaging. There''s been loads of work on it since 4.1, > mainly by Olaf Hering. > > Ian. > >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Is there any documentation on it somewhere? Couldn''t find anything in the tools/xenpaging dir or on the wiki On Tue, Oct 25, 2011 at 9:48 AM, chris <tknchris@gmail.com> wrote:> Cool thanks, I knew I couldn''t be the first to think of it :) I will check > it out > > > On Tue, Oct 25, 2011 at 4:04 AM, Ian Campbell <Ian.Campbell@citrix.com>wrote: > >> On Tue, 2011-10-25 at 01:30 +0100, chris wrote: >> > Is there any mechanism to give a.domU memory from dom0 swap? It would >> > be neat/useful if we could utilize that to test things in a vm with >> > more RAM than is.physically available. Obviously performance wouldn''t >> > be.stellar.but it would still have some usefulness >> >> The xenpaging feature which some folks are working on allows guest RAM >> to be swapped to a file in dom0. >> >> It lives in tools/xenpaging. There''s been loads of work on it since 4.1, >> mainly by Olaf Hering. >> >> Ian. >> >> >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On Tue, Oct 25, chris wrote:> Is there any documentation on it somewhere? Couldn''t find anything in the tools > /xenpaging dir or on the wikiThere is some outdated blurb in docs/misc/xenpaging.txt about the usage part of the xenpaging binary. The hypervisor part was documented recently in changeset 23797: http://xenbits.xen.org/hg/xen-unstable.hg/rev/18306b054799 Please note that there is currently no code in the tools to automatically start xenpaging for a given guest, the binary has to be started manually. If you want to test xenpaging use xen-unstable, 4.1 has major bugs. Olaf _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
thanks alot i will test it and give you any feedback i can On Tue, Oct 25, 2011 at 2:40 PM, Olaf Hering <olaf@aepfle.de> wrote:> On Tue, Oct 25, chris wrote: > > > Is there any documentation on it somewhere? Couldn''t find anything in the > tools > > /xenpaging dir or on the wiki > > There is some outdated blurb in docs/misc/xenpaging.txt about the usage > part of the xenpaging binary. The hypervisor part was documented > recently in changeset 23797: > http://xenbits.xen.org/hg/xen-unstable.hg/rev/18306b054799 > > Please note that there is currently no code in the tools to > automatically start xenpaging for a given guest, the binary has to be > started manually. > > If you want to test xenpaging use xen-unstable, 4.1 has major bugs. > > Olaf >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel