yahoo-eng-team team mailing list archive

[Geza Gemes <geza.gemes@xxxxxxxxx>]

Public bug reported:

In nova/compute/resource_tracker.py in the definition of the
_update_usage_from_instances function the amount of free memory reported
by the hypervisor layer gets overwriten by the amount of configured host
reserved memory:

resources['memory_mb_used'] = CONF.reserved_host_memory_mb

If the compute host uses more memory (not counting the VMs memory usage)
than the reserved_host_memory, it results in erroneus free memory
reporting by the compute host and consequently to suboptimal scheduling.

** Affects: nova
     Importance: Undecided
     Assignee: Geza Gemes (geza-gemes)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => Geza Gemes (geza-gemes)

-- 
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/1266415

Title:
  Compute node reports wrong amount of free memory

Status in OpenStack Compute (Nova):
  New

Bug description:
  In nova/compute/resource_tracker.py in the definition of the
  _update_usage_from_instances function the amount of free memory
  reported by the hypervisor layer gets overwriten by the amount of
  configured host reserved memory:

  resources['memory_mb_used'] = CONF.reserved_host_memory_mb

  If the compute host uses more memory (not counting the VMs memory
  usage) than the reserved_host_memory, it results in erroneus free
  memory reporting by the compute host and consequently to suboptimal
  scheduling.

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1266415/+subscriptions