Re: [PATCH] Warn when io_min_workers exceeds io_max_workers

At Tue, 23 Jun 2026 13:03:21 +0900, Michael Paquier <michael(at)paquier(dot)xyz> wrote in
> On Mon, Jun 22, 2026 at 09:47:06PM -0500, Baji Shaik wrote:
> > Attached v2 with two patches:
> >
> > 0001 - Adds check_io_worker_gucs() with parameterized GUC names (%s)
> > 0002 - Adjusts check_av_worker_gucs() to use the same format
> >
> > Both now produce the same translatable errmsg pattern:
> > "\"%s\" (%d) should be less than or equal to \"%s\" (%d)"
>
> That looks sensible here.

I have two minor comments.

As Michael suggested, using placeholders for the GUC names could make
similar messages easier to share in the future, which may also help
reduce the number of translation strings. I wouldn't consider it
necessary to adjust the existing
autovacuum_max_workers/autovacuum_worker_slots message as part of this
patch, though.

Also, "Re-check" in the second call-site comment feels a bit vague to
me, since the previous call is quite far away. Perhaps both call-site
comments could simply describe checking the relevant GUC values, one
at startup and the other after a configuration reload. Regards,

--
Kyotaro Horiguchi
NTT Open Source Software Center