📖 ~1 min read
Table of contents
Symptom & Impact
Service memory growth triggers OOM events and recurring process restarts.
Environment & Reproduction
Debian 11 daemon versions show leak behavior under sustained workload patterns.
Root Cause Analysis
Application allocations are not released, exhausting memory over long uptime intervals.
Quick Triage
Confirm leak trend and isolate specific process RSS growth characteristics.
Step-by-Step Diagnosis
Profile process memory over time and correlate with request or job patterns.
Solution – Primary Fix
Patch leaking component, set safe limits, and restart with controlled recovery policy.
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Solution – Alternative Approaches
Implement periodic rolling restarts while awaiting upstream permanent fixes.
Verification & Acceptance Criteria
Memory usage stabilizes and no new OOM kill records appear during load tests.
Rollback Plan
Revert component version if patch causes regressions in functional behavior.
Prevention & Hardening
Add memory slope alerting and canary analysis for newly deployed daemon builds.
Related Errors & Cross-Refs
Related issues include CPU runaway loops and watchdog restart storms.
Related tutorial: View the step-by-step tutorial for debian-11.
View all debian-11 tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
Daemon profiling guidance and Debian package changelog notes.
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