[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Why is cpu-to-node mapping different between Xen 4.0.2-rc1-pre and Xen 4.1-unstable?
At 21:58 +0100 on 27 Oct (1288216729), Dante Cinco wrote: > My system is a dual Xeon E5540 (Nehalem) HP Proliant DL380G6. When > switching between Xen 4.0.2-rc1-pre and Xen 4.1-unstable I noticed > that the NUMA info as shown by the Xen 'u' debug-key is different. > More specifically, the CPU to node mapping is alternating for 4.0.2 > and grouped sequentially for 4.1. This difference affects the > allocation (wrt node/socket) of pinned VCPUs to the guest domain. Yes; this change was deliberate. The mapping of pcpu numbers to core/socket/node used to depend on the BIOS of the particular machine; now it's a consistent order on all machines. http://xenbits.xen.org/xen-unstable.hg/rev/2f4a89ad2528 Tim. -- Tim Deegan <Tim.Deegan@xxxxxxxxxx> Principal Software Engineer, XenServer Engineering Citrix Systems UK Ltd. (Company #02937203, SL9 0BG) _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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