🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026
Affected versions: RHEL 10.0 RHEL 10.1

📖 ~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

Latency and throughput deviate because intended tuned profile is not active.

Environment & Reproduction

Profile changed manually but not applied by service at boot.

tuned-adm active
systemctl status tuned

Root Cause Analysis

tuned daemon disabled, conflicting profile scripts, or unsupported profile selection.

Quick Triage

Check active profile and service enablement.

tuned-adm list
systemctl is-enabled tuned

Step-by-Step Diagnosis

Inspect tuned logs and profile configuration overrides.

journalctl -u tuned -n 200 --no-pager
cat /etc/tuned/active_profile
Illustrative mockup for rhel-10 — tuned_profile_mismatch
Unexpected active tuned profile — Illustrative mockup — Progressive Robot

Solution – Primary Fix

Select correct profile and ensure tuned starts at boot.

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tuned-adm profile throughput-performance
systemctl enable --now tuned
Illustrative mockup for rhel-10 — tuned_profile_persistent
Profile persists after reboot — Illustrative mockup — Progressive Robot

Solution – Alternative Approaches

Create custom derived profile for workload-specific tuning.

cp -a /usr/lib/tuned/throughput-performance /etc/tuned/custom-throughput

Verification & Acceptance Criteria

Active profile remains unchanged after reboot and benchmarks normalize.

reboot
tuned-adm active

Rollback Plan

Switch back to balanced profile if workload regressions appear.

tuned-adm profile balanced

Prevention & Hardening

Version-control tuned profiles and baseline benchmark outputs.

tuned-adm recommend
journalctl -u tuned -p warning -n 60 --no-pager

No active profile, tuned daemon not running.

Related tutorial: View the step-by-step tutorial for rhel-10.

View all rhel-10 tutorials on the Tutorials Hub →

Browse all common problems & solutions on the Tutorials Hub.

References & Further Reading

RHEL tuned profile administration and performance tuning docs.

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