[CentOS-virt] I/O load distribution
Dennis J.
dennisml at conversis.deMon Jul 27 15:56:02 UTC 2009
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On 07/27/2009 05:12 PM, Ben Montanelli wrote: > I am certainly no expert on Xen. I have read through docs and various > threads a bit considering the I/O demands and have the impression that > there are a couple of primary factors to work with (please correct me if > I'm wrong). My comprehension is far from complete. > > 1 - Select which scheduler, weight and cap to use. Some favor > computation over I/O and vice versa. If your dom's are "fighting" over > disk I/O this is the referee and enforces the rules YOU choose to keep > it "fair" and efficient as possible. > > Suggested read, document date apparently Jul-18-2009: > <http://cseweb.ucsd.edu/~dgupta/papers/per07-3sched-xen.pdf> > Thanks for that. I'll probably move most of my Xen VMs over to KVM as soon as that becomes a viable option but this should help me getting my bearings with regards to understanding the overall scheduling and I/O topics. Regards, Dennis
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