Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

The FDP team is no longer accepting new bugs in Bugzilla. Please report your issues under FDP project in Jira. Thanks.

Bug 1753845

Summary:	ovn-controller recomputing flows for any change into the external_ids columns of certail SB tables.
Product:	Red Hat Enterprise Linux Fast Datapath	Reporter:	Numan Siddique <nusiddiq>
Component:	ovn2.11	Assignee:	Numan Siddique <nusiddiq>
Status:	CLOSED CURRENTRELEASE	QA Contact:	haidong li <haili>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	FDP 19.G	CC:	ctrautma, haili, yalli
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-10-13 17:35:24 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Numan Siddique 2019-09-20 04:21:17 UTC

Description of problem:

If CMS updates the external_ids column of logical_switch_port/logical_router_port, ovn-northd updates the same to the corresponding Port_Binding row. And this causes ovn-controller to wakeup and recompute flows. This results in unnecessary CPU usage

Version-Release number of selected component (if applicable):


How reproducible:

Run
ovn-nbctl set logical_switch_port <PORT_NAME> external_ids:foo=bar in a continuous loop and notice the notice the ovn-controller log file and the CPU usage of ovn-controller.

This would result in 100% cpu usage.

Steps to Reproduce:
1.
2.
3.

Actual results:

ovn-controller should not recompute logical flows and this should not result in 100% cpu usage.


Expected results:


Additional info:

Comment 1 Numan Siddique 2019-09-20 04:23:41 UTC

This issue is seen in a customer deployment - https://bugzilla.redhat.com/show_bug.cgi?id=1740335

Comment 2 Numan Siddique 2019-10-13 17:34:58 UTC

This issue is not seen in 19.F ovn2.11-2.11.1-2.

Closing this BZ.

Comment 3 Numan Siddique 2019-10-13 17:35:24 UTC

This issue is not seen in 19.F ovn2.11-2.11.1-2.

Closing this BZ.