Re: [Qemu-devel] [PATCH] migration: use XBZRLE only after bulk stage

[Eric Blake]

On 03/01/2013 07:06 AM, Peter Lieven wrote:
>> Do you have any benchmark numbers?  At any rate, the explanation seems
>> sound, so a benchmark should show this.
> 
> Do you have a particular test pattern in mind? If there is nothing going on
> in the VM XBZRLE will not be better than normal copy at all.
> 
> Otherwise you will have N xbzrle misses and 0 xbzrle pages without the
> patch
> and 0 xbzrle misses and 0 xbzrle pages with the patch.

How about a migration of a guest running the synthetic r/w load
generator in docs/xbzrle.txt?

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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