Bug 1998120
| Summary: | Tuned affining containers to house keeping cpus | ||
|---|---|---|---|
| Product: | OpenShift Container Platform | Reporter: | Jiří Mencák <jmencak> |
| Component: | Performance Addon Operator | Assignee: | Martin Sivák <msivak> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Gowrishankar Rajaiyan <grajaiya> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 4.8 | CC: | aos-bugs, grajaiya, jmencak, mniranja, shajmakh, yjoseph, yquinn |
| Target Milestone: | --- | ||
| Target Release: | 4.8.z | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: |
Cause:
Tuned scheduler plugin did not recognize container processes as exceptions being managed by OCP's cpu manager.
Consequence:
Tuned modified the pinning of containers on restart and placed them all on the house keeping (reserved) cpus. This broke pinning guarantees and overloaded the reserved cpus.
Fix:
A new tuned feature #1980715 allows defining exceptions using cgroup name and PAO configures tuned to ignore container pinning.
Result:
Container pinning is now managed by OCP's cpu manager only.
|
Story Points: | --- |
| Clone Of: | 1985739 | Environment: | |
| Last Closed: | 2022-04-05 14:44:11 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1985739 | ||
| Bug Blocks: | |||