⚡ Bolt: Optimize ShareableMap defragmentation #49
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- Replaces manual byte-by-byte copy loop with `Uint8Array.prototype.set` utilizing `subarray`. - Achieves ~66% performance improvement (approx 3x faster) for large items (1KB). - Reduces execution time from ~24.6ms to ~8.35ms in benchmark.
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⚡ Bolt: Optimize ShareableMap defragmentation
💡 What: Replaced the manual byte-by-byte copy loop in
ShareableMap.defragmentwithUint8Array.prototype.setcombined withsubarray.🎯 Why: The manual loop was suboptimal for copying larger blocks of memory. Using the native
memcpyviasetis significantly faster for larger payloads.📊 Impact: Reduces defragmentation time by ~66% (3x faster) for items around 1KB in size. For very small items (<50 bytes), performance is neutral.
🔬 Measurement: Verified using a custom benchmark script (
bench_defrag.ts) creating a 5000-item map with 1KB values, deleting 50% to trigger defragmentation.PR created automatically by Jules for task 13140758725918940722 started by @pverscha