Created attachment 1644869 [details]
OLM cpu on idle cluster after fresh install
Description of problem:
In a newly installed cluster, the olm process spikes to 15% of 1 core every 5 minutes at steady state - no activity. As the number of projects grows (project spec below), the 5 minute olm process spikes grow. At 2000 projects the spikes use 2 full cores every 5 minutes at steady state.
Other control plane processes on the master do not exhibit this behavior when the cluster is idle.
10 image streams
Version-Release number of selected component (if applicable):
How reproducible: always
Steps to Reproduce:
1. Install a 4.3 cluster with 3 masters and 3 computes
2. Measure olm process CPU usage over time, observe spikes every 5 minutes to ~15%
3. Create more projects with the spec above
4. Observe the growth in the olm process usage
CPU usage graphs for OLM process attached.
Created attachment 1644870 [details]
OLM cpu on idle cluster with 2K projects
Verified on 4.4.0-0.nightly-2020-03-12-082023
Same results as for https://bugzilla.redhat.com/show_bug.cgi?id=1810698
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.