[Libvir] [PATCH] Xen: Support cpu_weight and cpu_cap for Xen.

Richard W.M. Jones rjones at redhat.com
Tue Jan 8 14:15:06 UTC 2008

Tatsuro Enokura wrote:
> Hi, Richard
> Richard W.M. Jones wrote:
>> [Resurrecting this old thread ...]
>> How about this as a plan?
>> (1) Add 'virsh savetuning' and 'virsh loadtuning' commands as Daniel 
>> Veillard has suggested above.  These would save the per-domain tuning 
>> information to an XML file
>>   <tuning>
>>     <pin vcpu="0" pcpu="0"/>
>>     <pin vcpu="1" pcpu="1"/>
>>     <!-- other stuff for cpu_weight, etc. -->
>>   </tuning>
> Ok, looks fine to me.
>> (2) Modify 'virsh define' and 'virsh create' commands to add a 
>> '--with-tuning' flag, so that:
>>   virsh define foo.xml --with-tuning foo-tuning.xml
>> Which basically does the ordinary 'virsh define' step followed by 'virsh 
>> loadtuning'.
> I agree and I want to add '--with-tuning' flag to 'virsh start' command, too.
>> (3) Modify 'virsh save' to add '--save-tuning', so that:
>>   virsh save foo foo.img --save-tuning foo-tuning.xml
>> This captures the tuning information into the XML file, and is the same 
>> as doing an ordinary 'save' followed by 'virsh savetuning'.
> Sounds good to me.

OK good.  I probably won't get around to this real soon now because I've 
got a huge list of things on my to do list, but if the design is good I 
can come up with an implementation in a week or two.


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