Re: [Qemu-devel] [PATCH v5 2/3] cpus: Fix throttling during vm_stop

2019-09-05 Thread Eric Blake
On 8/26/19 5:37 AM, Yury Kotov wrote: > Throttling thread sleeps in VCPU thread. For high throttle percentage > this sleep is more than 10ms. E.g. for 60% - 15ms, for 99% - 990ms. > vm_stop() kicks all VCPUs and waits for them. It's called at the end of > migration and because of the long sleep the

[Qemu-devel] [PATCH v5 2/3] cpus: Fix throttling during vm_stop

2019-08-26 Thread Yury Kotov
Throttling thread sleeps in VCPU thread. For high throttle percentage this sleep is more than 10ms. E.g. for 60% - 15ms, for 99% - 990ms. vm_stop() kicks all VCPUs and waits for them. It's called at the end of migration and because of the long sleep the migration downtime might be more than 100ms e