Re: [Xen-devel] [PATCH 00 of 10 [RFC]] Automatically place gueston host's NUMA nodes with xl

["butian huang" <11221079@xxxxxxxxxx>]

hello，

I used the patch in xen4.1 and enabled it has the feature of numa placement,but 
has the earlier said problem.Can you help me that what is the reason? 
And where is the newest version of the patch，pls provide the latest development 
branch's address.

Thanks,
Regards,
Butine huang
Zhejiang University
2013-03-06

        

>On mer, 2013-03-06 at 10:49 +0000, butian huang wrote:
>> hello,
>> 
>Hi,
>
>> I am using your patch about "[Xen-devel] [PATCH 00 of 10 [RFC]] 
>> Automatically place guest on host's NUMA nodes with xl",
>> but I meet with a problem,that is, using the three NUMA placement policies, 
>> and putting the VM on the selected numa node;
>>
>Mmm... Can I ask "why" ?
>
>And the reason why I'm asking is, that patch is the very first RFC of a
>work that has been refined and resubmitted many times, and finally
>checked-in the official Xen development repository, in time for the 4.2
>release.
>
>The above to say that, if you install and use Xen 4.2 (and, of course,
>also if you clone, build and use the latest development branch) you'll
>get a much better engineered, debugged and tested version of the
>automatic placement feature.
>
>So, is there a particular reason why you're sticking to that very first
>and very old version of the patchset, instead of using the latest or,
>much better, the official releases of Xen that incorporate  it?
>
>> Actually,using the command  "xl info -n",the VM's memory is not placed the 
>> selected numa node,but it is placed averagly 
>> on the four numa nodes.
>> For example,the VM's memory is 2G,each node occupies 512m memory,why??? 
>>
>That is the old default behaviour, if no pinning and no automatic
>placement happens. I remember having tested that old RFC before
>submitting it, but I'm not in a position of figuring out the details of
>what is going on anymore, since we well moved on from that stage.
>
>If you could move on yourself to something more, well, "current", that
>would be great, and I certainly will be happy to help with any issue you
>might have with it, or to discuss any feature you're missing.
>
>Regards,
>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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