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": 27104679, "cycles": 11890487}, "in_credit": {"instructions": 3517992, "cycles": 1599796}, "large": {"instructions": 1421141, "cycles": 635549}, "ranks": {"instructions": 24461843, "cycles": 14883419}, "none": {"instructions": 617594, "cycles": 206190}, "field": {"instructions": 8999054, "cycles": 3366751}, "found": {"instructions": 14151357, "cycles": 10583883}}
+{"serve": "pure-serve", "per_branch": {"instructions": 27000469, "cycles": 11861597}, "in_credit": {"instructions": 3494299, "cycles": 1586220}, "large": {"instructions": 1421606, "cycles": 612299}, "ranks": {"instructions": 24408016, "cycles": 14881533}, "none": {"instructions": 617123, "cycles": 194839}, "field": {"instructions": 9008753, "cycles": 3313430}, "found": {"instructions": 14162216, "cycles": 10579828}}
+{"serve": "pure-serve", "per_branch": {"instructions": 27179606, "cycles": 11895677}, "in_credit": {"instructions": 3534978, "cycles": 1593510}, "large": {"instructions": 1421029, "cycles": 615442}, "ranks": {"instructions": 24504036, "cycles": 14990092}, "none": {"instructions": 617586, "cycles": 195867}, "field": {"instructions": 8999045, "cycles": 3337164}, "found": {"instructions": 14147990, "cycles": 10807080}}
+{"serve": "pure-serve", "per_branch": {"instructions": 27087988, "cycles": 11880543}, "in_credit": {"instructions": 3514114, "cycles": 1652760}, "large": {"instructions": 1421534, "cycles": 679535}, "ranks": {"instructions": 24458239, "cycles": 15232390}, "none": {"instructions": 617115, "cycles": 194019}, "field": {"instructions": 9008642, "cycles": 3371309}, "found": {"instructions": 14160887, "cycles": 10559598}}