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