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Re: [libvirt] [Qemu-devel] [PATCH v4] XBZRLE delta for live migration of large memory apps



On 08/08/2011 04:29 PM, Anthony Liguori wrote:

One thing that strikes me about this algorithm is that it's very good for a particular type of workload--shockingly good really.

Poking bytes at random places in memory is fairly generic. If you have a lot of small objects, and modify a subset of them, this is the pattern you get.


I think workload aware migration compression is possible for a lot of different types of workloads. That makes me a bit wary of QEMU growing quite a lot of compression mechanisms.

It makes me think that this logic may really belong at a higher level where more information is known about the workload. For instance, I can imagine XBZRLE living in something like libvirt.

A better model would be plugin based.

--
error compiling committee.c: too many arguments to function


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