v2.5.44 — Performance Efficiency Audit

Performance Efficiency Audit — 7 High-Impact Fixes

Backend

Database (journal.rs)

• Added index on operations.reverted — undo/redo queries now use index instead of full table scan
• Added PRAGMA busy_timeout = 5000 — graceful handling under contention

Watcher (watcher.rs)

• Consolidated double Mutex lock into single acquisition — 50% less lock contention on hot path

Rule Engine (rule_engine.rs)

• Changed regex cache from Mutex to RwLock — concurrent reads no longer serialized

Duplicates (duplicates.rs)

• Eliminated triple fs::metadata per file — carry size/modified through pipeline (saves ~20K stat calls per 10K files)

Organizer (organizer.rs)

• Added extension check before metadata extraction — skip EXIF/audio parsing for non-media files (saves ~1800 file opens per 1000 mixed files)

Channel (lib.rs)

• Increased watcher channel capacity 100 → 1000 — prevents event loss during bulk file operations

Frontend

App.tsx — Conditional rendering

• Replaced display: none pattern with conditional rendering
• Only the active panel is mounted — eliminates 6 unnecessary component trees at startup
• Stops LiveCapture 5s polling when panel inactive (~48 API calls/min saved)
• Stops ChangeTimeline 10s polling when panel inactive (~6 API calls/min saved)

Impact Summary

Fix	Before	After
DB index on reverted	Full table scan	Index seek
Mutex contention	2 locks per event	1 lock per event
Regex cache reads	Serialized	Concurrent
Metadata reads per file	3 stat() calls	1 stat() call
Non-media metadata	Always extracted	Skipped
Channel capacity	100 (event loss)	1000 (no loss)
Panel mounting	All 7 always mounted	Only active panel

Packages

• AFO_2.5.44_amd64.deb — Debian/Ubuntu
• AFO-2.5.44-1.x86_64.rpm — Fedora/RHEL