Duration-balance the CI pytest shards (~22m target per shard) - #406
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Commits the .test_durations file captured from a full local 3h17m suite run (5,667 passed / 91 skipped on Python 3.14) and switches pytest-split to least_duration splitting. The count-balanced shards were lumpy (3m/52m/2m/31m); duration balancing targets ~22m per shard. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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least_duration scattered the heavy census modules across shards, making every shard pay their module-scoped fixture setup (39-55m per shard, ~2x total compute). duration_based_chunks balances cumulative duration over contiguous collection order, keeping expensive modules intact. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Follow-up to #402: commits the
.test_durationsfile from a full local suite run (3h17m serial, 5,667 passed / 91 skipped, Python 3.14) and enablesleast_durationsplitting. The count-balanced shards ran 3m/52m/2m/31m; the wall-clock bound was the 52m shard. Duration balancing targets ~22m per shard — this PR's own run is the benchmark.The durations file goes stale gracefully (new tests split by count within groups); refresh it opportunistically from future local full runs.
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