[pve-devel] KVM Live Backup performance

[Dietmar Maurer]

> I agree, limiting IO from the VM during backup can have advantages.
> On the flip side loosing 50% of the IO

This 50% loose has nothing to do with the new backup algorithm, because
your test does not involve any writes. So it is more likely a bug in the
AIO code. I will dig deeper next week.

I wonder if such slowdown also happen with other KVM block jobs (storage migrate).