The 150 ms wall-clock budget failed under the CI coverage tracer, so it
is split. test_filter_work_is_bounded runs on every job and under
coverage: one filter SELECT per request, the ambiguity probe is an index
search (EXPLAIN QUERY PLAN), the per-scan values are built on the cold
request only, and a cursor page calls the sort key at most
ceil(log2 n)+3 times. test_filter_budget runs only with
PROMPTMANAGER_PERF_BUDGET=1 and no tracer, asserts the best of three
rounds' p95, and has its own non-required "perf budget" job. TESTING.md
records the convention.
Vito Sansevero
811b63894d