yahoo-eng-team team mailing list archive

[Sylvain Bauza <sbauza@xxxxxxx>]

Yup, for the moment, only libvirt/KVM supports that feature.
Adding such thing for the libvirt/Xen case is a large implementation, which definitely needs a blueprint for discussing about the design.
Closing that bug as it's a feature enhancement.

** Changed in: nova
       Status: New => Invalid

** Changed in: nova
   Importance: Undecided => Wishlist

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https://bugs.launchpad.net/bugs/1726356

Title:
  NOVA/CPU Pinning not working with xen

Status in OpenStack Compute (nova):
  Invalid

Bug description:
  Hi,

  CPU Pinning or NUMA doesn't seem to work with xen hypervisor:

  I used the following guide: 
  https://docs.openstack.org/nova/latest/contributor/testing/libvirt-numa.html. 

  Xen version: 4.4.4
  Nova 9.1.0
  libvirt 1.2.14-12

  
  After creating new instance

  ``` 
  mysql> select numa_topology from compute_nodes; 
  +---------------+ 
  | numa_topology | 
  +---------------+ 
  | NULL          | 
  | NULL          | 
  +---------------+ 

  
  $ sudo virsh dumpxml instance-00000009 
  ... 
  <vcpu placement='static'>1</vcpu> 
  ...
  No vcpupin written to the instance

  
  But NUMA is available 

  [root@ca-ostest459 ~]# virsh nodeinfo 
  CPU model:           x86_64 
  CPU(s):              32 
  CPU frequency:       2593 MHz 
  CPU socket(s):       1 
  Core(s) per socket:  8 
  Thread(s) per core:  2 
  NUMA cell(s):        2 
  Memory size:         134158412 KiB 

  Regards

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