⚡ Optimize VBANPingPacket parsing performance#460
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- Pre-calculate EServicePINGFeatures numeric values to avoid repeated Object.entries and array allocations. - Replace Buffer.subarray/getXNextBytes with direct offset-based reads to avoid intermediate Buffer allocations. - Improve feature bitmask check to correctly handle composite flags. Measured improvement: ~57x faster in micro-benchmark.
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📊 VBAN Packet Performance (PR vs Main)
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1 participant
💡 What: Optimized
VBANPingPacket.fromUDPPacketby pre-calculating enum values and using direct buffer reads instead of creating subarrays.🎯 Why: The previous implementation used
Object.entrieson an enum followed by multiple array methods (filter,map) and created many intermediateBufferinstances viasubarray(inside thegetXNextByteshelper), which is very inefficient in a high-frequency packet parsing path.📊 Measured Improvement: Establishing a baseline for 1,000,000 parsing iterations:
The new implementation also uses the more robust
(bitFeature & value) === valuecheck for bitmask features, ensuring correct handling of composite flags likeMIDI.The
getXNextByteshelper was removed entirely as it was only used in this file.PR created automatically by Jules for task 14363845083710888474 started by @thib3113