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



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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