| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Peter Geoghegan <pg(at)bowt(dot)ie> |
| Cc: | Michael Guissine <mguissine(at)gmail(dot)com>, Julien Rouhaud <rjuju123(at)gmail(dot)com>, Alexander Korotkov <akorotkov(at)postgresql(dot)org>, pgsql-bugs(at)lists(dot)postgresql(dot)org |
| Subject: | Re: BUG #17652: Performance degradation after migrating from v13.4 to v14.4 |
| Date: | 2022-10-19 20:35:59 |
| Message-ID: | 20221019203559.6sqpejxyhbbmzged@awork3.anarazel.de |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-bugs |
Hi,
On 2022-10-19 13:20:37 -0700, Peter Geoghegan wrote:
> On Wed, Oct 19, 2022 at 1:12 PM Andres Freund <andres(at)anarazel(dot)de> wrote:
> > The reason you're seeing this in 14 is likely the following entry in the
> > release notes:
> >
> > > Allow GiST/GIN pg_trgm indexes to do equality lookups (Julien Rouhaud)
> > > This is similar to LIKE except no wildcards are honored.
> >
> > CCed author/committer of that change. I suspect this would need proper costing
> > to not be inadvertently be used.
>
> I am reminded of this recent thread:
>
> https://postgr.es/m/3188617.44csPzL39Z@aivenronan
>
> (Perhaps you were thinking of the same thing already, but thought I'd
> mention it, just in case.)
No, I hadn't seen that one. That indeed looks quite relevant...
Greetings,
Andres Freund
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Michael Guissine | 2022-10-19 22:30:16 | Re: BUG #17652: Performance degradation after migrating from v13.4 to v14.4 |
| Previous Message | Peter Geoghegan | 2022-10-19 20:20:37 | Re: BUG #17652: Performance degradation after migrating from v13.4 to v14.4 |