yahoo-eng-team team mailing list archive

[Sean Dague <sean@xxxxxxxxx>]

this is really old, and numa support has evolved a ton since then.
Marking as invalid. Please reopen if still happens in master.

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

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1156456

Title:
  libvirt CPU info doesn't count NUMA cells

Status in OpenStack Compute (Nova):
  Invalid

Bug description:
  The libvirt driver, when counting sockets/cores/etc., does not take
  NUMA architectures into account.  This can cause applications using
  data from the Nova API to under-report the total number of
  sockets/cores/etc. on compute nodes with more than one NUMA cell.

  Example, on a production system with 2 NUMA cells:

  $ grep ^proc /proc/cpuinfo | wc -l
    32

  $ python simple_test_script_to_ask_nova_for_cpu_topology.py
  {u'cores': u'8', u'threads': u'2', u'sockets': u'1'}

  So, if one were relying solely on Nova to obtain information about
  this system's capabilities, the results would inaccurate results.

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1156456/+subscriptions