[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] Xen 3.4.1 NUMA support
>>> Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx> 10.11.09 02:46 >>> >> >>> Andre Przywara <andre.przywara@xxxxxxx> 09.11.09 16:02 >>> >> >BTW: Shouldn't we set finally numa=on as the default value? >> >> I'd say no, at least until the default confinement of a guest to a single >> node gets fixed to properly deal with guests having more vCPU-s than >> a node's worth of pCPU-s (i.e. I take it for granted that the benefits of >> not overcommitting CPUs outweigh the drawbacks of cross-node memory >> accesses at the very least for CPU-bound workloads). > >What default confinement? I thought guests had an all-pCPUs affinity mask be >default? Not with numa=on (see also Andre's post to this effect): The guest will get assigned to a node, and its affinity set to that node's CPUs. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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