| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Jim Nasby <jnasby(at)upgrade(dot)com>, "Burd, Greg" <greg(at)burd(dot)me> |
| Cc: | MARK CALLAGHAN <mdcallag(at)gmail(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Tomas Vondra <tomas(at)vondra(dot)me>, Nathan Bossart <nathandbossart(at)gmail(dot)com> |
| Subject: | Re: postmaster uses more CPU in 18 beta1 with io_method=io_uring |
| Date: | 2025-07-08 03:22:12 |
| Message-ID: | wf3ib2vds33knzwa6yun72qgyqsa7ickqcp5gh2akpedrvvjgk@trbeukpqkhlv |
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| Lists: | pgsql-hackers |
Hi,
On 2025-06-30 12:27:10 -0400, Andres Freund wrote:
> On 2025-06-05 14:32:10 -0400, Andres Freund wrote:
> > On 2025-06-05 12:47:52 -0400, Tom Lane wrote:
> > > Andres Freund <andres(at)anarazel(dot)de> writes:
> > > > I think this is a big enough pitfall that it's, obviously assuming the patch
> > > > has a sensible complexity, worth fixing this in 18. RMT, anyone, what do you
> > > > think?
> > >
> > > Let's see the patch ... but yeah, I'd rather not ship 18 like this.
> >
> > I've attached a first draft.
> >
> > I can't make heads or tails of the ordering in configure.ac, so the function
> > test is probably in the wrong place.
>
> Any comments on that patch? I'd hoped for some review comments... Unless I'll
> hear otherwise, I'll just do a bit more polish and push..
After addressing most of Greg's and Jim's feedback, I pushed this. I chose not
to increase the log level as Jim suggested, but if we end up deciding that
that's the way to go, we can easily change that...
Greetings,
Andres
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