Open Stack

HI Nova folks,

I am trying to find out how Numa balance/weighs per host is taking care of
in Nova.

I know how weighers work in general, but it's weighing between hosts. I am
not so clear when it comes to a single host with multiple sockets, how does
nova weigh them?

For instance, a host has 4 sockets, A, B, C, D. When scheduling request
comes in asking for 4 cores on 2 sockets(2 cores per socket), scheduler
realized that A+B, A+C, and C+D combination can all fit the request. In
this case, how does nova make the decision on which combination to choose
from?

-- 
Thank you

Regards

Li
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