[Bug 1602444] Fix proposed to charm-glance (master)

[OpenStack Infra]

Fix proposed to branch: master
Review: https://review.openstack.org/341234

** Changed in: cinder (Juju Charms Collection)
       Status: Triaged => In Progress

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https://bugs.launchpad.net/bugs/1602444

Title:
  worker-multiplier option does not allow floating point values

Status in Charm Helpers:
  In Progress
Status in cinder package in Juju Charms Collection:
  In Progress
Status in glance package in Juju Charms Collection:
  In Progress
Status in keystone package in Juju Charms Collection:
  In Progress
Status in neutron-api package in Juju Charms Collection:
  In Progress
Status in nova-cloud-controller package in Juju Charms Collection:
  In Progress
Status in swift-storage package in Juju Charms Collection:
  In Progress

Bug description:
  The worker-multiplier option is a convenience option that lets the
  users not worry about the number of CPUs specifically. However, in
  deployments where there are many containers running api services on
  the hosts, this results in way too many processes leading to high
  load.

  Unfortunately, the worker-multiplier option is specified as an integer
  value which does not allow a user to reduce this below the number of
  CPUs detected.

  A work around is to further spread the load to multiple baremetal
  machines and do not place all API services on the same machines.

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