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by lsc
6249 days ago
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contention is... more complex than that. are you dedicating a core to the dom0? (it helps network performance rather a lot) the fewer VCPUs you have per DomU, the more DomUs can run at once. (on an 8 core box, with one cpu pinned to the dom0, I can run 7 1vcpu DomUs and one dom0 (for network/disk io) at one time. Alternately, I can run 1 4vcpu DomU and one Dom0) On the other hand, if nobody else is trying to do anything, the box with 4 VCPUs has 4 times the resources that the box with 1VCPUs has. |
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