[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] reliable live migration of large and busy guests
> From: Andrew Cooper [mailto:andrew.cooper3@xxxxxxxxxx] > Sent: Tuesday, November 06, 2012 4:19 PM > To: xen-devel@xxxxxxxxxxxxx > Subject: Re: [Xen-devel] reliable live migration of large and busy guests > > As potential food for thought: > > Is there wisdom in having a new kind of live migrate which, when pausing > the VM on the source host, resumes the VM on the destination host. Xen > would have to track not-yet-sent pages and pause the guest on pagefault, > and request the required page as a matter of priority. > > The advantages of this approach would be that a timing sensitive > workloads would be paused for far less time. Even if it was frequently > being paused for pagefaults, the time to get a single page over the LAN > would be far quicker than the entire dirty set, at which point on > resume, the interrupt paths would fire again; The timing paths would > quickly become fully populated. Further to that, a busy workload in the > guest dirtying a page which has already been sent will not result in any > further network traffic. Something like this? http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.184.2368 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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