tuned Profile Not Applied After Reboot

📖 ~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 baseline degrades because expected CPU, I/O, or power tuning is not active.

Environment & Reproduction

After reboots, profile changes through automation drift, or accidental disabling of tuned service.

Root Cause Analysis

`tuned` not enabled, wrong profile selected, or conflicting custom profile syntax errors.

Quick Triage

Run `systemctl status tuned`, `tuned-adm active`, and verify configured profile files exist.

Step-by-Step Diagnosis

Use `journalctl -u tuned –since -2h`, `tuned-adm list`, and compare runtime kernel parameters against policy.

Solution – Primary Fix

Target profile is active and persists across reboot with expected parameter values applied.

Solution – Alternative Approaches

Enable tuned, select correct profile using `tuned-adm profile `, and reboot if required by setting.

Verification & Acceptance Criteria

Benchmark representative workload and verify latency/throughput aligns with expected tuned profile behavior.

Rollback Plan

Switch back to prior profile and restart tuned if workload behavior regresses unexpectedly.

Prevention & Hardening

Enforce profile via configuration management and detect profile drift with periodic compliance checks.

Related Errors & Cross-Refs

`systemctl enable –now tuned && tuned-adm profile throughput-performance && tuned-adm active`

Related tutorial: View the step-by-step tutorial for rhel-8.

View all rhel-8 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

RHEL 8 performance tuning docs and tuned profile selection guidance for server workloads.