Bug 2108697 - OCP 4.11 AWS excessively high etcd resources with OVN-Kubernetes on large cluster-density tests
Summary: OCP 4.11 AWS excessively high etcd resources with OVN-Kubernetes on large clu...
Keywords:
Status: CLOSED DUPLICATE of bug 2108679
Alias: None
Product: OpenShift Container Platform
Classification: Red Hat
Component: Networking
Version: 4.11
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
: ---
Assignee: Jaime Caamaño Ruiz
QA Contact: Anurag saxena
URL:
Whiteboard: perfscale-ovn
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-07-19 17:50 UTC by Andrew Collins
Modified: 2022-08-30 09:22 UTC (History)
6 users (show)

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Last Closed: 2022-08-30 09:22:54 UTC
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Description Andrew Collins 2022-07-19 17:50:53 UTC 
Description of problem: 
On an OpenShift 4.11.0-rc.1 configured with OVN-Kubernetes, we observed significant regression in the etcd CPU and Memory usage from 4.10 to 4.11.

When compared to Openshift SDN, etcd resources grow at a significantly higher rate than an OpenShift SDN cluster installed with the same version.

Version-Release number of selected component (if applicable):
4.11.0-rc.1

How reproducible:
100%


Steps to Reproduce:
1. Install a 4.11.0-rc.1 cluster with r5.4xlarge masters
2. Scale cluster to 252 nodes
3. Apply cluster-density e2e-benchmarking workload with 4000 iterations 

Actual results:
etcd CPU usage maxes out at 1.73 (of 16) cores, and 7.16 GiB (of 124GiB)


Expected results:
etcd resource consumption scales closer to OpenShiftSDN at this scale, which is 0.088 out of 16 cores and 1.69GiB of 124GiB.
Comment 3 Raul Sevilla 2022-08-30 09:22:54 UTC 

*** This bug has been marked as a duplicate of bug 2108679 ***
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