infrastructure/mw-pfeddersheim-workstation

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ja 54ab23dce9 docs(system): analysis reports and EOD workflows

- Created crash analysis for 2026-03-17 OOM event.
- Documented stability test results and memory tuning effects.
- Added PARA-structured workflows for EOD protocol.
- Updated workstation health report for current 16GB swap status.

2026-03-17 19:02:06 +01:00

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description

mw-pfeddersheim-workstation Performance Tuning

Overview

This document tracks optimization decisions, system tuning parameters, and cleanup routines implemented for the workstation to ensure maximum resource efficiency and stability.

Current System State (2026-02-27)

CPU: AMD/Intel (High core count assumed from load distribution)
RAM: 64GB
Storage: NVMe (77% usage detected)
OS: Manjaro/Arch Linux

Optimization Strategies

1. Kernel Parameter Tuning (Ansible)

vm.swappiness: Set to 10 to prefer RAM over swap on the 64GB machine.
fs.inotify.max_user_watches: Increase to 524288 for IDEs and build tools.
vm.vfs_cache_pressure: Set to 50 to improve filesystem cache retention.
systemd-oomd: Enabled to prevent system-wide hangs during severe memory pressure (User-space OOM killer).
zswap: Enabled via GRUB to provide compressed swap cache, improving performance when swapping is necessary.

2. Docker Resource Management

Memory Limits: Implemented mem_limit on critical containers (Firebird: 4G, Mailpit: 512M) to prevent runaway processes from consuming entire system memory.

2. Storage & Filesystem Cleanup

Docker: Automated pruning of unused images and volumes via scripts/maintenance.sh.
Journald: Vacuuming logs older than 7 days or exceeding 500MB.
Package Manager: Maintaining only the last 2 versions of packages in the cache.

3. Service Optimization

Ananicy: (Optional) Use Ananicy-cpp for automatic process prioritizing.

Implementation Log

Date	Type	Description
2026-02-27	Initial	Initial tuning document and strategy established.
2026-02-27	Audit	Performed system inspection: Boot time 33.8s, RAM usage 6.5GB/62GB, identified KVM and UVC errors.
2026-03-17	Stability	Enabled `systemd-oomd` and `zswap`, added Docker memory limits following system hang analysis.

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