On 11/08/2010 01:37 PM, Gene Cooperman wrote: > Thanks for the careful response, Oren. For others who read this, > one could interpret Oren's rapid post as criticizing the work of > Andres Lagar Cavilla. I'm sure that this was not Oren's intention. > Please read below for a brief clarification of the novelty of SnowFlock. Err... yes, that was careless of me. I was too focused on getting the thread back to track. Thanks for pointing out. >>> about live migration, have you also looked at the work of >>> Andres Lagar Caviilla on SnowFlock? >>> http://andres.lagarcavilla.com/publications/LagarCavillaEurosys09.pdf >>> He does live migration of entire virtual machines, again with very >>> small delay. Of course, the issue for any type of live migration is that >>> if the rate of dirtying pages is very high (e.g. HPC), then there is >>> still a delay or slow response, due to page faults to a remote host. >> >> VMware, Xen and KVM already do live migration. However, VMs >> are a separate beast. > > I absolutely agree with your point that live migration of > applications is a different beast, and technically very novel. > Since I know Andres Lagar Cavilla personally, I also feel obligated > to comment why SnowFlock truly is novel in the VM space. First, as Andres > writes: > "SnowFlock is an open-source project [SnowFlock] built on the Xen 3.0.3 > VMM [Barham 2003]." > In the abstract, Andres points out one of the major points of novelty: > "To evaluate SnowFlock, we focus on the demanding > scenario of services requiring on-the-fly creation of hundreds > of parallel workers in order to solve computationallyintensive > queries in seconds." > We must be careful that we don't destroy someone's reputation without > a careful study of their work. Yes, it's really nice work - I saw it when I visited there. (Coincidentally the post-copy idea with Xen appeared also in VEE 09 briefly before). Oren. _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
