perf: BTreeMap::range() and incremental memory tracking in reassembly#24

Merged

Zious11 merged 8 commits intodevelopfrom

feature/reassembly-perf

Apr 7, 2026

Commits on Apr 7, 2026

docs: add reassembly perf optimization design spec
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docs: add reassembly perf optimization implementation plan
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perf: add buffered_bytes field and track on segment insert
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perf: track buffered_bytes on flush and add debug assertion in memory_used()
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perf: use BTreeMap::range() for overlap detection and replace O(n) buffered sum
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perf: remove update_memory() and track total_memory incrementally
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fix: address PR review findings for reassembly perf
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docs: update spec/plan to reflect total_memory() accessor and past tense
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