Number of Nova workers is less than expected (CPU count)

[Ilya Shakhat]

Controller node has 40 CPU cores (according to list in /proc/cpuinfo). In fuel-library it is specified that nova.conf parameters "osapi_compute_workers", "ec2_workers", "metadata_workers" should be equal to value of processorcount variable, however in the deployed conf file all parameters have values 16.

Puppet detects number of processors correctly:
  root@node-1196:~# puppet apply -e 'notify { "The value is: $::processorcount": }'
  Notice: The value is: 40

The same issue is at least for cinder and neutron.

[Ilya Shakhat (shakhat)]

VERSION:
  feature_groups:
    - mirantis
  production: "docker"
  release: "7.0"
  openstack_version: "2015.1.0-7.0"
  api: "1.0"
  build_number: "287"
  build_id: "287"
  nailgun_sha: "46a7a2177a0b7ef91422284c1c90295fee8f5c84"
  python-fuelclient_sha: "1ce8ecd8beb640f2f62f73435f4e18d1469979ac"
  fuel-agent_sha: "082a47bf014002e515001be05f99040437281a2d"
  fuel-nailgun-agent_sha: "d7027952870a35db8dc52f185bb1158cdd3d1ebd"
  astute_sha: "a717657232721a7fafc67ff5e1c696c9dbeb0b95"
  fuel-library_sha: "43224223dab8cf9627b5ecf737e60216a3fdd114"
  fuel-ostf_sha: "1f08e6e71021179b9881a824d9c999957fcc7045"
  fuelmain_sha: "6b83d6a6a75bf7bca3177fcf63b2eebbf1ad0a85"

[Alex Schultz (alex-schultz)]

This is expected and we support this being configured by operators if they want more than 16.

https://review.openstack.org/#/c/211255/

[Vladimir Kuklin (vkuklin)]

The original change to calculation equation was proposed by mos-puppet team. Pushing this bug back to them.

[Vitaly Sedelnik (vsedelnik)]

Ilya, per comments this is expected behavior. Please close this as Invalid if you are ok with or provide reasons to change this setting.

[Ilya Shakhat (shakhat)]

Closing as Invalid since the product behaves as designed.