[libvirt] Problem of host CPU topology parsing

Daniel P. Berrange berrange at redhat.com
Fri May 11 08:35:48 UTC 2012


On Fri, May 11, 2012 at 04:21:48PM +0800, Osier Yang wrote:
> Hi,
> 
> We have problem of host CPU topology parsing on special
> platforms (general platforms are fine). E.g.
> 
> On a AMD machine with 48 CPUs [1] (4 sockets, 6 cores indeed
> [2]), VIR_NODEINFO_MAXCPUS [3] will always return 24 as the
> total CPU number.

If it is returning 24, then surely we have the 'nodes' value
wrong in the virNodeInfo ? It sounds like it should have been
set to 2  (4 * 6 * 2 => 48)

> [3] #define VIR_NODEINFO_MAXCPUS(nodeinfo) ((nodeinfo).nodes*(nodeinfo).sockets*(nodeinfo).cores*(nodeinfo).threads)

Rgeards,
Daniel
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