🟡 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 regress because intended performance profile is not active.

Environment & Reproduction

Profile changed manually but tuned daemon disabled or overridden.

tuned-adm active
systemctl status tuned

Root Cause Analysis

tuned service not enabled at boot or another automation resets profile state.

Quick Triage

Check active profile and service startup configuration.

tuned-adm list
systemctl is-enabled tuned

Step-by-Step Diagnosis

Inspect tuned logs and boot events for profile switches.

journalctl -u tuned -n 100
grep -R tuned-adm /etc/cron* /usr/lib/systemd/system
Illustrative mockup for rhel-10 — tuned_diag
Unexpected tuned profile state — Illustrative mockup — Progressive Robot

Solution – Primary Fix

Enable tuned and set profile persistently.

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sudo systemctl enable --now tuned
sudo tuned-adm profile throughput-performance
tuned-adm active
Illustrative mockup for rhel-10 — tuned_fix
Persistent profile activation — Illustrative mockup — Progressive Robot

Solution – Alternative Approaches

Codify kernel and sysctl tuning directly if tuned is not part of baseline.

Verification & Acceptance Criteria

Profile remains active across reboot and performance baseline returns.

reboot
tuned-adm active

Rollback Plan

Switch back to balanced profile if workload behavior worsens.

sudo tuned-adm profile balanced

Prevention & Hardening

Track profile drift and lock approved tuning profiles by role.

Related to CPU governor misconfiguration and sysctl overrides at boot.

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

tuned administration and profile lifecycle documentation.

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