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. Each project: 6 builds 10 image streams 2 deployments 40 secrets 5 routes 20 configmaps Version-Release number of selected component (if applicable): 4.3.0-0.nightly-2019-12-12-021332 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. https://access.redhat.com/errata/RHBA-2020:0581