Red Hat Bugzilla – Bug 1285397
Backport Neutron L3 performance fixes
Last modified: 2016-04-26 22:30:21 EDT
Description of problem:
Several backportable improvements have been made to neutron in the Liberty cycle that remove extra overhead during normal operation.
As this is an intrinsic performance issue, it is in a sense 100% reproducible. However, there is no direct mechanism of quantifying the problem without invasive instrumentation of the code. Steps to reproduce might look like:
1. Configure a reasonable yet large number of routers
2. Monitor CPU usage of neutron server and responsiveness of operations
The actual results might be that the neutron server spikes to a sustained 100% CPU usage and loses responsiveness, while the expected result is that it fluctuates according to user activity and the agent update cycle.
code verified in openstack-neutron-2015.1.2-7.el7ost.noarch
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.