[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [RFC] use event channel to improve suspend speed



On 25/5/07 01:06, "Brendan Cully" <brendan@xxxxxxxxx> wrote:

> In case there's interest, I'll attach the two patches I'm using to
> speed up checkpointing (and live migration downtime). As I mentioned
> earlier, the first patch should be semantically equivalent to existing
> code, and cuts downtime to about 30-35ms. The second notifies xend
> that the domain has been suspended asynchronously, so that final round
> memory copying may begin before device migration stage 2. This is a
> semantic change, but I can't think of a concrete drawback. It's a
> little rough-and-ready -- suggestions for improvement are welcome.

Can patch 2 be used without patch 1? The fact it doesn't need to change the
guest interface again is a big advantage. And it seems to provide by far the
larger proportional speedup.

 -- Keir



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.