Optimization: mmap-based page I/O

[pszymkowiak]

Replace read/write file I/O with memory-mapped files:

• Use memmap2 crate for mmap
• Zero-copy page reads (no deserialization, read directly from mapped memory)
• Page cache via OS page cache (no custom cache needed)
• Dirty page tracking for writes
• Must show measurable speedup on disk-based benchmarks vs current file I/O

[pszymkowiak]

[w] wshm · Automated triage by AI

🔍 Automated Triage

✨ Category	feature
🟡 Priority	medium
🎯 Confidence	95%

Summary

Feature request to replace file I/O with mmap-based page access using memmap2 crate for performance gains; well-scoped optimization task with clear acceptance criteria.

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Triaged automatically by wshm · This is an automated analysis, not a human review.