On Thu, Apr 07, 2022 at 09:48:02PM +0900, Masahiko Sawada wrote: > Oops, the results are opposite: > > HEAD: 5367.234 ms > Patched: 5418.869 ms
I have been playing with external sorts & friends after running an instance on scissors (fsync=off, PGDATA on tmpfs, etc.), even forcing a compilation of the code with gettimeofday(), and I can see a tendency of a ~1% impact with the patch in this configuration. So there is a tendency, while this is also rather close to the usual noise range. Anyway, this is going to be helpful for debugging when temp file I/O is a bottleneck, so.. Applied 0001 with some tweaks to the docs and some indentation fixes. Now, 0002 is straight-forward but I need more coffee and lunch.. -- Michael
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