perf(pm): optimal — channel resolve on deps, legacy install on p0/p3#2923

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elrrrrrrr wants to merge 37 commits intonextfrom

perf/optimal-channel-resolve-legacy-install

Commits on May 8, 2026

perf(pm): bump manifests-concurrency-limit 64 → 256 + add fetch breakdown

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chore(p1): revert concurrency 256 → 64 + restore manifest-bench

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ci(p1): wire manifest-bench standalone HTTP sweep into bench-phases-linux

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perf(ruborist): inline JSON parse, drop rayon::spawn dispatch

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perf(ruborist): switch JSON parse to tokio spawn_blocking

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perf(ruborist): switch extract_core_version to spawn_blocking too

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revert + instrument(ruborist): post-build phase timing

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instrument(ruborist): preload main loop dispatch + result split

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perf(pm): grow rayon pool to max(num_cpus, 8) to drain p1 extract queue

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perf(pm): skip preload for p1 path; BFS does per-level parallel prefetch

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perf(pm): fast_preload bypasses UnifiedRegistry for utoo deps path

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perf(pm): dispatch fast_preload settle to rayon to free tokio runtime

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perf(pm): bump manifests-concurrency-limit 64 → 96 (manifest-bench best)

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perf(pm): fast_preload populates (name, spec) cache slot for BFS fast path

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perf(pm): fuse primary settle into fetch task to drop dispatch RTT

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perf(pm): combined-parse fetch path eliminates per-fetch double simd_json

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perf(pm): bump manifests-concurrency-limit 96 → 128

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revert(pm): manifests-concurrency-limit back to 96

elrrrrrrr
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Commits on May 9, 2026