Bug 1995518 - Document known issue about scheduler misbehavior with many node images
Summary: Document known issue about scheduler misbehavior with many node images
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Container Native Virtualization (CNV)
Classification: Red Hat
Component: Documentation
Version: 4.8.0
Hardware: Unspecified
OS: Unspecified
medium
unspecified
Target Milestone: ---
: 4.8.7
Assignee: Sabrina Jess
QA Contact: Kedar Bidarkar
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-08-19 10:05 UTC by Fabian Deutsch
Modified: 2023-09-18 04:27 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2023-02-13 12:59:05 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1984442 0 high CLOSED Scaled setup|Scheduler ignore nodes for no apparent reason when scheduling CNV VMs 2023-02-15 04:14:13 UTC
Red Hat Issue Tracker CNV-13681 0 None None None 2021-11-05 16:34:54 UTC

Internal Links: 1984442

Description Fabian Deutsch 2021-08-19 10:05:34 UTC 
Document URL: 
N/A

Section Number and Name: 
N/A

Describe the issue: 
bug #1984442 shows that under certain conditions scheduling will be suboptimal if there are too many container images on a node.
This is not specific to CNV; but also impacts scheduling containers.

Suggestions for improvement: 

Let's check if OCP is documenting this behavior, if not, then we should find a place to document this for all of CNV:
If they are reluctant, then we should file a known issue for CNV only


Additional information: 
https://bugzilla.redhat.com/show_bug.cgi?id=1984442
Comment 1 Fabian Deutsch 2021-08-19 10:13:00 UTC 
CNV+OCS is more often impacted, because in this setup we are compiling many images per node.
Comment 7 ctomasko 2022-10-11 16:25:24 UTC 
See PR https://github.com/openshift/openshift-docs/pull/51060. Peer review in progress
Comment 9 Avital Pinnick 2023-02-13 12:59:05 UTC 
Changes approved and merged.
Comment 10 Red Hat Bugzilla 2023-09-18 04:25:16 UTC 
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days
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