RHEL 8 tuned profile does not persist 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 profile reverts to default after reboot, causing inconsistent throughput and latency.

Environment & Reproduction

Set profile with tuned-adm profile on RHEL 8, reboot host, then check tuned-adm active.

Root Cause Analysis

tuned service disabled, conflicting scripts, or profile overrides cause post-boot drift.

Quick Triage

Use systemctl status tuned and journalctl -u tuned -b to identify profile apply failures.

Step-by-Step Diagnosis

Review /etc/tuned and custom startup scripts for settings that overwrite tuned-managed parameters.

Solution – Primary Fix

Enable and start tuned with systemctl, set intended profile, and remove conflicting sysctl/tuning scripts.

Solution – Alternative Approaches

Create a custom tuned profile inheriting base settings for workload-specific persistent tuning.

Verification & Acceptance Criteria

Profile remains active across reboot and benchmark baselines return to expected values.

Rollback Plan

Switch back to prior profile and restore removed tuning scripts if workload regression appears.

Prevention & Hardening

Codify tuned settings in automation and monitor profile drift with periodic compliance checks.

Related Errors & Cross-Refs

Related to cpupower policy conflicts and custom rc.local performance overrides.

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

Use Red Hat tuned documentation and performance tuning profiles for RHEL 8 best practices.