[libvirt] [PATCH 0/2] Avoid touching monitor when fetching guest XML or info

Guannan Ren gren at redhat.com
Fri Jul 13 09:28:45 UTC 2012


On 07/13/2012 01:01 AM, Daniel P. Berrange wrote:
> On Thu, Jul 12, 2012 at 11:45:55PM +0800, Guannan Ren wrote:
>> The virDomainGetXMLDesc and virDomainGetInfo APIs for QEMU suffer
>> from needing to run 'query-balloon' to update the balloon level.
>> This has caused us performance problems and even worse caused us
>> to lock up on a dead QEMU.
>>
>> The following two patches to QEMU add a BALLOON_EVENT and a query-events
>> command to QMP. With those two parts, we can avoiding running the
>> query-balloon command at all.
> Thanks for re-posting these patches - but in the future, if you are going
> to take over someone else's patches it would be a good idea to contact
> them beforehand to let them know - this would save possible duplicated
> work.

      Get it.

      Guannan Ren





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