[pve-devel] KVM Live Backup performance

Dietmar Maurer dietmar at proxmox.com
Sat Nov 23 08:16:28 CET 2013


> 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).




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