Re: Showing I/O timings spent reading/writing temp buffers in EXPLAIN - Mailing list pgsql-hackers

On Tue, Apr 05, 2022 at 11:57:14AM +0800, Julien Rouhaud wrote:
> This is a minor detail and the rest of the patch looks good to me, so I'm
> marking the patch as Ready for Committer!

@@ -440,10 +442,14 @@ BufFileLoadBuffer(BufFile *file)
+   if (track_io_timing)
+       INSTR_TIME_SET_CURRENT(io_start);

In places where we don't have clock_gettime(), this means using
gettimeofday().  I would not underestimate the performance impact of
such a change, even if track_io_timing is already known to have a
certain overhead on some platforms.
--
Michael