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On 4 November 2015 13:14:18 CET, hw <hw@×××××.de> wrote: |
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>Hi, |
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>how do I know whether xen uses NUMA or not? It says in dmesg: |
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>[ 0.000000] NUMA turned off |
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>[ 0.000000] Faking a node at [mem |
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>0x0000000000000000-0x0000000040068fff] |
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>and 'xl info -n' shows two nodes: |
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>node: memsize memfree distances |
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> 0: 14656 3304 10,20 |
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> 1: 23424 7792 20,10 |
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>which could be right --- though I would expect each node to have 12GB |
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>rather than these weird sizes. |
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>So is NUMA turned off or not? Is it even possible to turn it off when |
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>it's |
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>enabled in the BIOS? |
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If BIOS has it enabled. Then the OS still beeds to support it. |
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Recent Xen has support for it. |
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As for the non uniform spread of the memory. It depends how the memory modules are placed in the mainboard with regards to the Numa nodes. (CPU) |
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-- |
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Joost |
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-- |
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Sent from my Android device with K-9 Mail. Please excuse my brevity. |
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