From: Dario Faggioli <dario.faggioli@citrix.com>
To: butine@zju.edu.cn
Cc: xen-devel@lists.xen.org
Subject: Re: how to move the memory of a domain from one NUMAnode to another?
Date: Thu, 8 Aug 2013 09:56:15 +0200 [thread overview]
Message-ID: <1375948575.19531.13.camel@Solace> (raw)
In-Reply-To: <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:
>
> long move_pages(int pid, unsigned long count, void **pages,
> const int *nodes, int *status, int flags);
>
> 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.
>
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?
>
For now, I'm concentrating on making it work. After that, we'll see how
to make if better, faster, more efficient, etc.
Dario
--
<<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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next prev parent reply other threads:[~2013-08-08 7:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-08 5:56 how to move the memory of a domain from one NUMAnode to another? butine
2013-08-08 7:56 ` Dario Faggioli [this message]
-- strict thread matches above, loose matches on Subject: below --
2013-08-12 6:22 butine
2013-08-12 8:53 ` Dario Faggioli
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