{
  "date": "2026-10-19",
  "baseline": "adbdafe4 plus PR #426 Java-side changes; production Rust unchanged before winner selection",
  "environment": {
    "cpu": "Intel Core i7-12650H",
    "logical_cpus": 16,
    "jdk": "17.0.20.1",
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    "java_heap": "2 GiB",
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    "included": "State/accounting, grouping, aggregate updates, filtering, output allocation and checksum consumption/destruction",
    "warm_prefix": "Same first native batch/RowData prefix processed before each timer; retained equally in window state",
    "consumer": "Same logical checksum, full first-warmup value+RowKind multiset oracle; later fixed-schema Java consumer cross-checks every trial against full-value warmup hash/count",
    "attached": "Earlier Java attached-window results remain separate wrapper diagnostics; no Rust-only attached measurement claimed",
    "caveats": "Standalone Rust and Java run in separate processes; all warmups, favorable/unfavorable trials and generic/fixed consumers retained. No complete-job speedup inferred."
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