Open Stack

Hi,  Everyone

I synced up with Alex about comments we got at PTG.  It's a long 
discussion, I might lost something.

What i got lists below,  fix me:

*  Remove sockets
*  Remove thread_policy

Not sure about following comments:


*  Remove the cpu topology from the proposal?
*  Using the cpu pinning info instead of cpu set?


By apply the suggestion, the API ``GET /servers/{server_id}/topology``  
response gonna to be like this,

and let us align what it should be:

  {
          # overall policy: TOPOLOGY % 'index
          "nodes":[
                     {
                       # Host Numa Node
                       # control by policy TOPOLOGY % 'index:host_info'
                       "host_numa_node": 3,
                       # 0:5 means vcpu 0 pinning to pcpu 5
                       # control by policy TOPOLOGY % 'index:host_info'
                       "cpu_pinning": {0:5, 1:6},
                       "vcpu_set": [0,1,2,3],
                       "siblings": [[0,1],[2,3]],
                       "memory_mb": 1024,
                       "pagesize_kb": 4096,
                       "cores": 2,
                       # one core has at least one thread
                       "threads": 2
                     }
                     ...
                    ], # nodes
     }


links:

ptg:
https://etherpad.openstack.org/p/nova-ptg-train L334

spec review:
https://review.opendev.org/#/c/612256/25/specs/stein/approved/show-server-numa-topology.rst

code review:
https://review.openstack.org/#/c/621476/

bp:
https://blueprints.launchpad.net/nova/+spec/show-server-numa-topology


Regards
Yongli He