From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dario Faggioli <dario.faggioli@citrix.com>
Subject: Re: how to move the memory of a domain from one
 NUMAnode to another?
Date: Thu, 8 Aug 2013 09:56:15 +0200
Message-ID: <1375948575.19531.13.camel@Solace>
References: <318130.15b49.1405c7f6143.Coremail.butine@zju.edu.cn>
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On gio, 2013-08-08 at 13:56 +0800, butine@zju.edu.cn wrote:
> linux provides the function move_pages ,which can move individual
> pages of a process to another node,as follows:
>=20
> long move_pages(int pid, unsigned long count, void **pages,
>     const int *nodes, int *status, int flags);
>=20
> Therefore,if xen can provide the similar approach,then we recognize
> the hot memory pages,and preferentially migrate the hot memory
> pages.Then the efficiecy of VM's migration will be very high.
>=20
Yes, but unfortunately Xen can't provide something like that. It may be
possible for HVM (or, in general, autotranslated) guests, but not for PV
guests. :-(

> And how to improve about the new version of memory migration? =20
>=20
For now, I'm concentrating on making it work. After that, we'll see how
to make if better, faster, more efficient, etc.

Dario

--=20
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)


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