* Feature idea
@ 2011-10-25 0:30 chris
2011-10-25 8:04 ` Ian Campbell
0 siblings, 1 reply; 6+ messages in thread
From: chris @ 2011-10-25 0:30 UTC (permalink / raw)
To: Xen-Devel List
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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
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* Re: Feature idea
2011-10-25 0:30 Feature idea chris
@ 2011-10-25 8:04 ` Ian Campbell
2011-10-25 13:48 ` chris
0 siblings, 1 reply; 6+ messages in thread
From: Ian Campbell @ 2011-10-25 8:04 UTC (permalink / raw)
To: chris; +Cc: Xen-Devel List
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.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Feature idea
2011-10-25 8:04 ` Ian Campbell
@ 2011-10-25 13:48 ` chris
2011-10-25 13:52 ` chris
0 siblings, 1 reply; 6+ messages in thread
From: chris @ 2011-10-25 13:48 UTC (permalink / raw)
To: Ian Campbell; +Cc: Xen-Devel List
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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.
>
>
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Feature idea
2011-10-25 13:48 ` chris
@ 2011-10-25 13:52 ` chris
2011-10-25 18:40 ` Olaf Hering
0 siblings, 1 reply; 6+ messages in thread
From: chris @ 2011-10-25 13:52 UTC (permalink / raw)
To: Ian Campbell; +Cc: olaf, Xen-Devel List
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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.
>>
>>
>
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Feature idea
2011-10-25 13:52 ` chris
@ 2011-10-25 18:40 ` Olaf Hering
2011-10-25 18:49 ` chris
0 siblings, 1 reply; 6+ messages in thread
From: Olaf Hering @ 2011-10-25 18:40 UTC (permalink / raw)
To: chris; +Cc: Xen-Devel List, Ian Campbell
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
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Feature idea
2011-10-25 18:40 ` Olaf Hering
@ 2011-10-25 18:49 ` chris
0 siblings, 0 replies; 6+ messages in thread
From: chris @ 2011-10-25 18:49 UTC (permalink / raw)
To: Olaf Hering; +Cc: Xen-Devel List, Ian Campbell
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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
>
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end of thread, other threads:[~2011-10-25 18:49 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-10-25 0:30 Feature idea chris
2011-10-25 8:04 ` Ian Campbell
2011-10-25 13:48 ` chris
2011-10-25 13:52 ` chris
2011-10-25 18:40 ` Olaf Hering
2011-10-25 18:49 ` chris
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