Re: [Xen-devel] how to move the memory of a domain from one NUMAnode to another?

[Dario Faggioli <dario.faggioli@xxxxxxxxxx>]

On gio, 2013-08-08 at 13:56 +0800, butine@xxxxxxxxxx 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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