[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Is continuous replication of state possible?
> > It basically just requires deterministic execution and event > > injection. Doing this for uniprocessor guests is fairly straight > > forward. Doing it for SMP guests (with decent performance) is > > going to be a huge challenge, as determinism is hard to achieve. We're > > looking in to it... > > I gather that the request was not to keep both of them *executing* at once, > but to simply keep the memory image on the clone system "mostly" in sync at > all times, so the failover could happen faster. This should be easier than > actually trying to execute the code deterministically. It's not clear whether shipping checkpoints or just doing deterministic execution will actually work best; that's why its on the research roadmap. There are implementations in-progress of both CoW checkpoints and deterministic execution. Ian ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/xen-devel
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