perf: page_allocator for worker arenas + eager free + index shrink (#261)#263
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justrach merged 1 commit intorelease/v0.2.57from Apr 13, 2026
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perf: page_allocator for worker arenas + eager free + index shrink (#261)#263justrach merged 1 commit intorelease/v0.2.57from
justrach merged 1 commit intorelease/v0.2.57from
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Three changes to reduce RSS: 1. Back worker arenas with page_allocator instead of GPA — mmap pages are returned to OS immediately on arena deinit (no GPA retention) 2. Free each worker's arena right after committing its results instead of holding all workers' data simultaneously 3. shrinkPostingLists/shrinkAllocations on trigram + word indexes after scan to release ArrayList over-allocation Benchmark (openclaw, 13,867 files, cold search): v0.2.56 baseline: 3,678MB 5.82s PR#260 (content): 3,415MB 5.26s This PR: 3,361MB 5.64s (-8.6% RSS vs baseline) Recall: 52/52 — no false negatives The remaining ~3.3GB is genuinely live index data (trigram posting lists + word index hits). Further reduction needs flat array storage or compressed postings (tracked in #261). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Benchmark Regression ReportThreshold: 10.00%
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perf: page_allocator for worker arenas + eager free + index shrink (#261)
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Summary
Three optimizations to reduce RSS during and after cold indexing:
shrinkPostingLists()andshrinkAllocations()release ArrayList over-allocation on trigram and word indexesBenchmark (openclaw, 13,867 files, cold search)
Recall: 52/52 for
handleRequest— no false negatives.The remaining ~3.3GB is genuinely live index data. Further reduction tracked in #261 (needs flat array storage or compressed postings).
Test plan
🤖 Generated with Claude Code