Loading...

Type: Bug
Resolution: Done-Errata
Priority: Undefined
Fix Version/s: rhel-8.10
Affects Version/s: rhel-8.10
Component/s: kernel / Scheduler
Labels:
None

Fixed in Build:
kernel-4.18.0-553.el8_10
Regression:
None
Severity:
Low
Keywords:

ZStream

Pool Team:

rhel-sst-kernel-rts
Sub-System Group:

ssg_core_kernel

Dev Target Milestone:
5
Internal Target Milestone:
8
Story Points:
2
Blocked:
False
Blocked Reason:

Hide

None

Show
None
Product Documentation Required:
None
Products:

Red Hat Enterprise Linux
Sprint:
None
Release Blocker:
Approved Blocker

Preliminary Testing:
Pass
Testable Builds:

Hide
The following Merge Request has pipeline job artifacts available:

Title: Make NOHZ play nice with cfs bandwidth in 8.10
MR: https://gitlab.com/redhat/rhel/src/kernel/rhel-8/-/merge_requests/5343
MR Pipeline: https://gitlab.com/redhat/rhel/src/kernel/rhel-8/-/pipelines/1002604181

The Repo URLs are *not* accessible from a web browser! They only function as a dnf or yum baseurl.

Artifacts expire six weeks after creation. If artifacts are needed after that time please rerun the pipeline by visiting the MR's 'Pipelines' tab and clicking the 'Run pipeline' button.

----------------------------------------

Downstream Pipeline Name: RHEL (rhel8_merge_request)
Downstream Pipeline: https://gitlab.com/redhat/red-hat-ci-tools/kernel/cki-internal-pipelines/cki-internal-contributors/-/pipelines/1002604339
Repo URL: https://s3.upshift.redhat.com/DH-PROD-CKI/internal/1002604339/$basearch/4.18.0-513.el8.5343_1002604181.$basearch
Debug Repo URL: https://s3.upshift.redhat.com/DH-PROD-CKI/internal/1002604339/$basearch-debug/4.18.0-513.el8.5343_1002604181.$basearch

4.18.0-513.el8.5343_1002604181.s390x:
Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604339/publish_s390x/5078029192/artifacts/repo/4.18.0-513.el8.5343_1002604181.s390x/

4.18.0-513.el8.5343_1002604181.aarch64:
Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604339/publish_aarch64/5078029191/artifacts/repo/4.18.0-513.el8.5343_1002604181.aarch64/

4.18.0-513.el8.5343_1002604181.ppc64le:
Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604339/publish_ppc64le/5078029188/artifacts/repo/4.18.0-513.el8.5343_1002604181.ppc64le/

4.18.0-513.el8.5343_1002604181.x86_64-debug:
Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604339/publish_x86_64_debug/5078029183/artifacts/repo/4.18.0-513.el8.5343_1002604181.x86_64/

4.18.0-513.el8.5343_1002604181.x86_64:
Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604339/publish_x86_64/5078029178/artifacts/repo/4.18.0-513.el8.5343_1002604181.x86_64/

----------------------------------------

Downstream Pipeline Name: REALTIME (rhel8_realtime_check_merge_request)
Downstream Pipeline: https://gitlab.com/redhat/red-hat-ci-tools/kernel/cki-internal-pipelines/cki-internal-contributors/-/pipelines/1002604336
Repo URL: https://s3.upshift.redhat.com/DH-PROD-CKI/internal/1002604336/$basearch/4.18.0-513.rt7.302.el8.5343_1002604181.$basearch
Debug Repo URL: https://s3.upshift.redhat.com/DH-PROD-CKI/internal/1002604336/$basearch-debug/4.18.0-513.rt7.302.el8.5343_1002604181.$basearch

4.18.0-513.rt7.302.el8.5343_1002604181.x86_64-debug:
Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604336/publish_x86_64_debug/5078028959/artifacts/repo/4.18.0-513.rt7.302.el8.5343_1002604181.x86_64/

4.18.0-513.rt7.302.el8.5343_1002604181.x86_64:
Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604336/publish_x86_64/5078028952/artifacts/repo/4.18.0-513.rt7.302.el8.5343_1002604181.x86_64/

----------------------------------------

Updated 2023-09-18 16:32 UTC by buglinker:
- KWF FAQ: https://red.ht/kernel_workflow_doc
- Slack #team-kernel-webhooks: https://redhat-internal.slack.com/archives/C04LRUPMJQ5
- Source: https://gitlab.com/cki-project/kernel-webhooks/-/blob/main/webhook/buglinker.py
- Documentation: https://gitlab.com/cki-project/kernel-webhooks/-/blob/main/docs/README.buglinker.md
- Report an issue: https://gitlab.com/cki-project/kernel-webhooks/-/issues/new?issue%5Btitle%5D=buglinker%20webhook%20issue

Show
The following Merge Request has pipeline job artifacts available: Title: Make NOHZ play nice with cfs bandwidth in 8.10 MR: https://gitlab.com/redhat/rhel/src/kernel/rhel-8/-/merge_requests/5343 MR Pipeline: https://gitlab.com/redhat/rhel/src/kernel/rhel-8/-/pipelines/1002604181 The Repo URLs are *not* accessible from a web browser! They only function as a dnf or yum baseurl. Artifacts expire six weeks after creation. If artifacts are needed after that time please rerun the pipeline by visiting the MR's 'Pipelines' tab and clicking the 'Run pipeline' button. ---------------------------------------- Downstream Pipeline Name: RHEL (rhel8_merge_request) Downstream Pipeline: https://gitlab.com/redhat/red-hat-ci-tools/kernel/cki-internal-pipelines/cki-internal-contributors/-/pipelines/1002604339 Repo URL: https://s3.upshift.redhat.com/DH-PROD-CKI/internal/1002604339/$basearch/4.18.0-513.el8.5343_1002604181.$basearch Debug Repo URL: https://s3.upshift.redhat.com/DH-PROD-CKI/internal/1002604339/$basearch-debug/4.18.0-513.el8.5343_1002604181.$basearch 4.18.0-513.el8.5343_1002604181.s390x: Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604339/publish_s390x/5078029192/artifacts/repo/4.18.0-513.el8.5343_1002604181.s390x/ 4.18.0-513.el8.5343_1002604181.aarch64: Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604339/publish_aarch64/5078029191/artifacts/repo/4.18.0-513.el8.5343_1002604181.aarch64/ 4.18.0-513.el8.5343_1002604181.ppc64le: Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604339/publish_ppc64le/5078029188/artifacts/repo/4.18.0-513.el8.5343_1002604181.ppc64le/ 4.18.0-513.el8.5343_1002604181.x86_64-debug: Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604339/publish_x86_64_debug/5078029183/artifacts/repo/4.18.0-513.el8.5343_1002604181.x86_64/ 4.18.0-513.el8.5343_1002604181.x86_64: Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604339/publish_x86_64/5078029178/artifacts/repo/4.18.0-513.el8.5343_1002604181.x86_64/ ---------------------------------------- Downstream Pipeline Name: REALTIME (rhel8_realtime_check_merge_request) Downstream Pipeline: https://gitlab.com/redhat/red-hat-ci-tools/kernel/cki-internal-pipelines/cki-internal-contributors/-/pipelines/1002604336 Repo URL: https://s3.upshift.redhat.com/DH-PROD-CKI/internal/1002604336/$basearch/4.18.0-513.rt7.302.el8.5343_1002604181.$basearch Debug Repo URL: https://s3.upshift.redhat.com/DH-PROD-CKI/internal/1002604336/$basearch-debug/4.18.0-513.rt7.302.el8.5343_1002604181.$basearch 4.18.0-513.rt7.302.el8.5343_1002604181.x86_64-debug: Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604336/publish_x86_64_debug/5078028959/artifacts/repo/4.18.0-513.rt7.302.el8.5343_1002604181.x86_64/ 4.18.0-513.rt7.302.el8.5343_1002604181.x86_64: Artifacts (RPMs): https://s3.upshift.redhat.com/DH-PROD-CKI/index.html?prefix=internal-artifacts/1002604336/publish_x86_64/5078028952/artifacts/repo/4.18.0-513.rt7.302.el8.5343_1002604181.x86_64/ ---------------------------------------- Updated 2023-09-18 16:32 UTC by buglinker: - KWF FAQ: https://red.ht/kernel_workflow_doc - Slack #team-kernel-webhooks: https://redhat-internal.slack.com/archives/C04LRUPMJQ5 - Source: https://gitlab.com/cki-project/kernel-webhooks/-/blob/main/webhook/buglinker.py - Documentation: https://gitlab.com/cki-project/kernel-webhooks/-/blob/main/docs/README.buglinker.md - Report an issue: https://gitlab.com/cki-project/kernel-webhooks/-/issues/new?issue%5Btitle%5D=buglinker%20webhook%20issue
Errata Link:
https://errata.devel.redhat.com/advisory/120590
Test Coverage:
None

Experience:
RH Private Keywords:

SFDC Cases Counter:
SFDC Cases Open:
SFDC Cases Links:

Planning:
None

Goal

Make NOHZ work with cfs bandwidth limits

Acceptance Criteria

Verify that the HZ_BW feature works to prevent the tick from being stopped on nohz_full cpus when a single bandwidth constrained cfs task is running.

This is the rhel8 version of 2208016 - "NOHZ_FULL, and CFS quota co-existance" which is needed for openshift telco workloads. We are applying the fix to rhel-8 for any remaining cases that use it.

links to

Merge Request: Make NOHZ play nice with cfs bandwidth in 8.10

RHSA-2023:120590 kernel bug fix and enhancement update

mentioned on

Merge request - kernel-4.18.0-517.el8

Merge request - kernel-rt-4.18.0-517.rt7.306.el8

Details

Description

Goal

Acceptance Criteria

Attachments

Issue Links

Easy Agile Planning Poker

Activity

People

Dates