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Visible benchmark regression between 08/05-09/05 #9919
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I reproduced a large benchmark regression in this test (
Between f1ddf1b and 720d32c, this test got 25x slower, and this is consistently reproducible. The smallest change to reproduce this is shown below -- a change to use the new This is strange because it seems like it should only affect the construction of the benchmark groups, not the benchmarks themselves. Also strange is the fact that reverting both of the changes below restores the old speed, while reverting only one of these does not change the speed at all.
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Most visible in
But similar bump is seen in other stdlib benchmarks.
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