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由 Jiri Denemark 提交于
As reported by Daniel Berrangé, we have a huge performance regression for virDomainGetInfo() due to the change which makes virDomainEndJob() save the XML status file every time it is called. Previous to that change, 2000 calls to virDomainGetInfo() took ~2.5 seconds. After that change, 2000 calls to virDomainGetInfo() take 2 *minutes* 45 secs. We made the change to be able to recover from libvirtd restart in the middle of a job. However, only destroy and async jobs are taken care of. Thus it makes more sense to only save domain state XML when these jobs are started/stopped.
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