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Bug 2002425 - [SCALE] ovn-controller takes too long to set ports as ovn-installed
Summary: [SCALE] ovn-controller takes too long to set ports as ovn-installed
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux Fast Datapath
Classification: Red Hat
Component: OVN
Version: RHEL 8.0
Hardware: Unspecified
OS: Unspecified
high
urgent
Target Milestone: ---
: ---
Assignee: Dumitru Ceara
QA Contact: Jianlin Shi
URL:
Whiteboard: perfscale-ovn
Depends On:
Blocks: 1986216
TreeView+ depends on / blocked
 
Reported: 2021-09-08 19:14 UTC by Tim Rozet
Modified: 2023-09-15 01:14 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2021-09-10 18:13:20 UTC
Target Upstream Version:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker FD-1528 0 None None None 2021-09-08 19:15:02 UTC

Description Tim Rozet 2021-09-08 19:14:37 UTC 
Description of problem:
In a 20 node cluster, running node-density lite with 249 pods per node, ovn-controller takes too long to set ports up via ovn-installed.

Example: https://gist.githubusercontent.com/trozet/f08d3fd4c6b991c40cc56122ee9d34b2/raw/22c14543822d76b21b4734f69857854606f7aa71/gistfile1.txt

The result is that some pods are taking over 300 seconds to be considered as up. This can be mitigated by slowing the rate at which ports are created in OVN. There are no long poll intervals in ovn-controller during this time, and only 35k openflow flows.

Version-Release number of selected component (if applicable):
ovn21.09-21.09.0-18.el8fdp.x86_64
Comment 1 Dumitru Ceara 2021-09-10 16:20:22 UTC 
@trozet Given that the symptoms were root caused to bug 2003193 and ovn-controller was legitimately waiting for OVS flows to report that flows were installed, I think we can safely close the OVN bug, do you agree?
Comment 2 Dan Williams 2021-09-10 18:13:20 UTC 
Yes, that's correct.
Comment 3 Red Hat Bugzilla 2023-09-15 01:14:52 UTC 
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 500 days
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