On Thu, 12 Jul 2012 02:02:24 +0100
"Vinod, Chegu" <chegu_vi...@hp.com> wrote:
> There have been some recent fixes (from Juan) that are supposed to honor the
> user requested downtime. I am in the middle of redoing some of my
> experiments...and will share when they are ready (in about 3-4 days).
> Initial observations are that the time take for the total migration
> considerably increases but there are no observed stalls or ping timeouts etc.
> Will know more after I finish my experiments (i.e. the non-XBZRLE ones).
>
> As expected the 10G [back -to-back] connection is not really getting
> saturated with the migration traffic... so the there is some other layer that
> is consuming time (possibly the overhead of tracking dirty pages).
>
> I haven't yet had the time to try to quantify the performance degradation on
> the workload during the live migration (stage 2)... need to look at that
> next.
>
I recommend you to try the latest kvm.git next branch as well since
it now has Xiao's fast(lock-less) page fault handling work.
Although I am still testing that branch, it seems working well here.
Thanks,
Takuya
> Thanks for the pointers to the old artcles.
>
> Thanks
> Vinod
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