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

[Peter Lieven]

Am 04.03.2013 um 18:33 schrieb Paolo Bonzini <address@hidden>:

> Il 04/03/2013 18:10, Peter Lieven ha scritto:
>>>> + xbzrle overflow : 0
>>>> - xbzrle overflow : 0
>>>> 
>>>> Thanks, this proves it's a good patch.
>> At least for the artificially generated load.
>> 
>> @Paolo: Have you seen my other question? Can the same page be transferred in 
>> the same round
>> more than once? If yes, I have to improve the patch for that case.
> 
> I have no idea, I was leaving that to Orit.
> 
> How would it affect the patch?

It currently starts using XBZRLE after the first complete round has been 
completed. If it was possible to transfer
the same page more than once in the first round, the patch would significantly 
slow that down.

I will dig into the code and try to find out as well.

Peter


> 
> Paolo