Bug 1954715

Summary:	Imagestream imports become very slow when doing many in parallel
Product:	OpenShift Container Platform	Reporter:	aaleman
Component:	ImageStreams	Assignee:	Oleg Bulatov <obulatov>
Status:	CLOSED ERRATA	QA Contact:	XiuJuan Wang <xiuwang>
Severity:	medium	Docs Contact:
Priority:	low
Version:	4.7	CC:	aos-bugs, jokerman, obulatov, skuznets, xiuwang
Target Milestone:	---
Target Release:	4.8.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Cause: we had 5 works to import images Consequence: when a lot of images should be imported, they could be in a queue for a dozen minutes Fix: increase number of workers Result: the import queue is processed faster	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-07-27 23:04:34 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 aaleman 2021-04-28 16:27:08 UTC

Description of problem:

When creating many imagestream imports in parallel, they eventually become very slow (more than 15 minutes) even when the import is just from one namespace to the other in the same cluster. This is presumably caused by the controller only having a concurrency of five, we observed that the workqueue_depth for the ImageStreamController goes up to 350.


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


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Comment 2 Steve Kuznetsov 2021-05-12 14:08:58 UTC

@Oleg if I remember correctly you wrote a patch that bumped the number of workers, or made it tunable from the operator configuration layer, right? If so, we can likely close this out.

Comment 3 Oleg Bulatov 2021-05-17 10:08:33 UTC

That PR is still open and is part of this BZ.

Comment 9 errata-xmlrpc 2021-07-27 23:04:34 UTC

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 (Moderate: OpenShift Container Platform 4.8.2 bug fix and security update), 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/RHSA-2021:2438