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[Surojit Pathak <suro.patz@xxxxxxxxx>]

Public bug reported:

With the following turned on in the config, /etc/nova/nova.conf
 + compute_monitors = virt_driver
 + scheduler_default_filters = MetricsFilter

nova/scheduler/filters/metrics_filter.py: MetricsFilter does not work as
intended, as it gets wrong metrics values to work on, even when the data
on DB is correct.

Snippet from DB -
http://paste.openstack.org/show/478481/

While printing the metrics name and value in the filter, the output
shows that all the CPU metrics, computed as percentage, were received as
0.

Snippet -
cpu.user.percent 0
cpu.kernel.time 580491900000000
cpu.kernel.percent 0
cpu.idle.time 8440469190000000
cpu.idle.percent 0
cpu.iowait.time 264054730000000
cpu.percent 0
cpu.user.time 2539292510000000
cpu.frequency 2400
cpu.iowait.percent 0

** Affects: nova
     Importance: Undecided
     Assignee: Surojit Pathak (suro-patz)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => Surojit Pathak (suro-patz)

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https://bugs.launchpad.net/bugs/1514997

Title:
  Metrics filter receives wrong metric value

Status in OpenStack Compute (nova):
  New

Bug description:
  With the following turned on in the config, /etc/nova/nova.conf
   + compute_monitors = virt_driver
   + scheduler_default_filters = MetricsFilter

  nova/scheduler/filters/metrics_filter.py: MetricsFilter does not work
  as intended, as it gets wrong metrics values to work on, even when the
  data on DB is correct.

  Snippet from DB -
  http://paste.openstack.org/show/478481/

  While printing the metrics name and value in the filter, the output
  shows that all the CPU metrics, computed as percentage, were received
  as 0.

  Snippet -
  cpu.user.percent 0
  cpu.kernel.time 580491900000000
  cpu.kernel.percent 0
  cpu.idle.time 8440469190000000
  cpu.idle.percent 0
  cpu.iowait.time 264054730000000
  cpu.percent 0
  cpu.user.time 2539292510000000
  cpu.frequency 2400
  cpu.iowait.percent 0

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