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ScottW514
dc9bede034
The first GET /state after forgetest starts hashes every test's implementation, and it took from 81 s to more than 12 minutes on the bench reference. Two causes: - sibling_imports() read and parsed a test's module and every sibling it imports, transitively, once per test: 280 ast.parse calls for 26 suite modules. module_parts() kept its own parse, sibling_imports() kept none. - The page gives up on a poll after 20 s and polls again; the server thread goes on computing. Each new poll started the same cold work beside the first, all of it on the one CPU, so the longer the first took the more copies ran. That is the spread between 81 s and 12 minutes. Each module's text and tree are now read and parsed once and kept, as are its direct sibling imports, and the implementation hash is filled by one thread at a time: a poll that arrives while it is computed waits for it instead of repeating it. catalog.forget(path) drops what is kept about a file, for the unit tests that edit their modules. The hashes do not move: every test's implementation hash and domain fingerprint on the image manifest of 20260923220034 is byte-identical before and after, so no result is invalidated. On the host the cold computation went from 7.00 s to 0.29 s (280 parses to 25). On the bench reference (the file bind-mounted on image 20260923220034, the page open) the first /state answered in 8 to 12 s after a restart, where the same restart earlier in the evening had not answered after 7 minutes. tests/test_responsiveness.py pins both: each suite module parsed at most once while every test's implementation hash is computed, and three threads reading one test's hash compute it once. With the old behavior put back by a patch both fail (280 parses for 26 modules; the hash computed 3 times). forgetest's unit tests 454 OK. forgetest is the dev-only harness, outside the catalog's coverage; its catalog consequence is none, since no fingerprint moves.