Research 140, 027's stage 2c measured: JSON read into a tree by recursive descent (aup's examples/json_tree.aup: value(d, i) -> Json, number giving the value and where it ends, each call's own let's lists, string's escapes joined by char(u), a depth-first walk passing items as values) against Python's reading walked so: JSONTestSuite's 95 y_ taken alike, no n_ taken, 2b's 6 i_ taken (a lone surrogate refused by char as encoding); 100,000 and 50,000 deep refused as memory (the frames fill the event's room, 0.2 s), 30,000 deep taken (past Python's json); 300 random documents alike; in make check (module_specs' digest now depth first, three paths); 142 lines against the same design's 105 in Python (json_rec.py; the bar missed: 24 lines of declarations, 23 of braces), 46 times cJSON's time and 1.6 times plain Python's (600 ns a byte, 248 Pure instructions; 71% in the steps, about 10% in calls, 66,000 calls a document, most of them small block fns like skip); characters against Python's ord in aup's check; probes: p5-chars compiles, p4-rec (a view calling itself) refused; instruction counts: the workloads' modules the same, batches within 0.001% of 2b (BFS -0.21%), the executor alone -0.001% to +0.30%, the bank's queries -0.30% to +0.11% (four runs each; bar 1%); json_rec_time.c (cJSON, a depth-first digest compared first); CHECKPOINT's direction row through 2c

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+{"serve": "pure-serve", "per_branch": {"instructions": 26965513, "cycles": 12329820}, "in_credit": {"instructions": 3486678, "cycles": 2301853}, "large": {"instructions": 1421213, "cycles": 764526}, "ranks": {"instructions": 24384330, "cycles": 14965408}, "none": {"instructions": 617594, "cycles": 198786}, "field": {"instructions": 8999053, "cycles": 3340870}, "found": {"instructions": 14153477, "cycles": 10932153}}
+{"serve": "pure-serve", "per_branch": {"instructions": 27165700, "cycles": 11943061}, "in_credit": {"instructions": 3531402, "cycles": 1625620}, "large": {"instructions": 1421494, "cycles": 606837}, "ranks": {"instructions": 24499209, "cycles": 14876346}, "none": {"instructions": 617115, "cycles": 193396}, "field": {"instructions": 9008642, "cycles": 3349618}, "found": {"instructions": 14160543, "cycles": 10702223}}
+{"serve": "pure-serve", "per_branch": {"instructions": 27199887, "cycles": 12121684}, "in_credit": {"instructions": 3539333, "cycles": 1628967}, "large": {"instructions": 1421149, "cycles": 608625}, "ranks": {"instructions": 24513416, "cycles": 15034269}, "none": {"instructions": 617594, "cycles": 195387}, "field": {"instructions": 8999053, "cycles": 3333569}, "found": {"instructions": 14151773, "cycles": 10702538}}
+{"serve": "pure-serve", "per_branch": {"instructions": 27106101, "cycles": 11890926}, "in_credit": {"instructions": 3518026, "cycles": 1605106}, "large": {"instructions": 1421542, "cycles": 619029}, "ranks": {"instructions": 24466175, "cycles": 14887083}, "none": {"instructions": 617115, "cycles": 192958}, "field": {"instructions": 9008642, "cycles": 3345733}, "found": {"instructions": 14162615, "cycles": 10752104}}