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authoreunhhu <[email protected]>2026-10-09 15:41:24 +0100
committereunhhu <[email protected]>2026-10-09 15:41:24 +0100
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Research 138: the batch executor's stage 5, design 025 made: sums into cells at once in integers (join 116.0 to 110.5 ms, short of 108: what is left is the same cells' memory, read, add and write again), decide's bit found once (BFS 23.2, short of 21.5: the tail's time was its loads more than its instructions), and the batch executor's loops aligned to 64-byte lines (the hot loops' placement had swung knapsack 6% at the same instructions; the lists' loops aligned too cost the bank's queries 1-2% more instructions, so not they); against b9 matmul -36%, knapsack -28%, roots -7.6%, join -6.2%, BFS -3.9%, the executor alone, the bank queries and TPC-C (+0.7%) as they were; 025's bars and what each stage measured; 024 and CHECKPOINT say so
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+{"query": "per_branch", "rows": 10, "accounts": 100000, "pure_median_ms": 5.21, "pure_fastest_ms": 5.13, "sqlite_median_ms": 45.0, "sqlite_fastest_ms": 44.87, "sqlite_indexed_median_ms": 14.05, "sqlite_indexed_fastest_ms": 14.03}
+{"query": "in_credit", "rows": 1, "accounts": 100000, "pure_median_ms": 0.84, "pure_fastest_ms": 0.77, "sqlite_median_ms": 5.9, "sqlite_fastest_ms": 5.87, "sqlite_indexed_median_ms": 0.16, "sqlite_indexed_fastest_ms": 0.16}
+{"query": "large", "rows": 212, "accounts": 100000, "pure_median_ms": 0.37, "pure_fastest_ms": 0.36, "sqlite_median_ms": 1.49, "sqlite_fastest_ms": 1.47, "sqlite_indexed_median_ms": 1.47, "sqlite_indexed_fastest_ms": 1.47}
+{"query": "ranks", "rows": 404, "accounts": 100000, "pure_median_ms": 6.64, "pure_fastest_ms": 6.58, "sqlite_median_ms": 2838.51, "sqlite_fastest_ms": 2835.42, "sqlite_indexed_median_ms": 7.6, "sqlite_indexed_fastest_ms": 7.52}