On 4 November 2015 13:14:18 CET, hw <h...@gc-24.de> wrote: > >Hi, > >how do I know whether xen uses NUMA or not? It says in dmesg: > > >[ 0.000000] NUMA turned off >[ 0.000000] Faking a node at [mem >0x0000000000000000-0x0000000040068fff] > > >and 'xl info -n' shows two nodes: > > >node: memsize memfree distances > 0: 14656 3304 10,20 > 1: 23424 7792 20,10 > > >which could be right --- though I would expect each node to have 12GB >rather than these weird sizes. > >So is NUMA turned off or not? Is it even possible to turn it off when >it's >enabled in the BIOS?
If BIOS has it enabled. Then the OS still beeds to support it. Recent Xen has support for it. 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) -- Joost -- Sent from my Android device with K-9 Mail. Please excuse my brevity.
