CentOS Stream 10 – Common Problem 117 – Diagnosis and Fix

📖 ~1 min read

Table of contents

1. Symptom & Impact
2. Environment & Reproduction
3. Root Cause Analysis
4. Quick Triage
5. Step-by-Step Diagnosis
6. Solution – Primary Fix
7. Solution – Alternative Approaches
8. Verification & Acceptance Criteria
9. Rollback Plan
10. Prevention & Hardening
11. Related Errors & Cross-Refs
12. References & Further Reading

Symptom & Impact

Performance profile reports active but kernel tunables remain default.

Environment & Reproduction

Common after upgrades or after sysctl drop-ins override tuned values.

Root Cause Analysis

Conflicting sysctl files override tuned-managed parameters.

Quick Triage

Run tuned-adm active and verify_profile to compare expected vs current.

Step-by-Step Diagnosis

Inspect /etc/sysctl.d and /usr/lib/sysctl.d for override files.

Solution – Primary Fix

Remove conflicting drop-ins or extend the tuned profile with overrides.

Solution – Alternative Approaches

Create a custom profile inheriting from throughput-performance with required tweaks.

Verification & Acceptance Criteria

tuned-adm verify_profile reports OK and benchmarks reflect tuning.

Rollback Plan

Switch profile with tuned-adm profile balanced if regression observed.

Prevention & Hardening

Track tuned profile state via configuration management.

Related Errors & Cross-Refs

Related to powertop and CPU governor mismatches.

Related tutorial: View the step-by-step tutorial for centos-stream-10.

View all centos-stream-10 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

tuned-adm manual and Red Hat performance guides.