Nova has the following configuration options: "ec2_workers", "osapi_compute_workers", "metadata_workers", and "[conductor] workers". The default value for these options in RHOS 5.0 is automatically set to the number of CPUs available to ensure that these services are able to utilize more than one CPU. This is a much better default for scaling purposes. We should backport this to RHOS 4.0. The commit that needs to be backported is: commit 75c96a48fc7e5dfb59d8258142b01422f81b0253 Author: Russell Bryant <rbryant> Date: Sun Jan 26 21:07:26 2014 -0500 Use (# of CPUs) workers by default Update the default value of the worker configuration options to be equal to the number of CPUs on the system. This is the most common value that should be used to get ideal performance from nova-conductor or nova-api. The following options are updated in this change: [default] ec2_workers= osapi_compute_workers= metadata_workers= [conductor] workers= DocImpact UpgradeImpact Change-Id: Id8009b5fd37cef03ca66cb5bf44211039ac895ba
Checked openstack-nova-2013.2.3-12.el6ost source rpm contents, and verified the patches contained the same diffs from upstream code https://code.engineering.redhat.com/gerrit/#/c/25426/ *0019-Use-of-CPUs-workers-by-default.patch
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHSA-2014-1084.html
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 365 days