On Fri, 2021-12-10 at 10:20 -0500, Tom Lane wrote:
> Jeff Janes <jeff.janes@gmail.com> writes:
> > Can we change the default setting of track_io_timing to on?
>
> That adds a very significant amount of overhead on some platforms
> (gettimeofday is not cheap if it requires a kernel call). And I
> doubt the claim that the average Postgres user needs this, and
> doubt even more that they need it on all the time.
> So I'm -1 on the idea.
I set "track_io_timing" to "on" all the time, same as "log_lock_waits",
so I'd want them both on by default.
Yours,
Laurenz Albe