| From: | Corey Huinker <corey(dot)huinker(at)gmail(dot)com> |
|---|---|
| To: | Jeff Davis <pgsql(at)j-davis(dot)com> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Michael Paquier <michael(at)paquier(dot)xyz>, jian he <jian(dot)universality(at)gmail(dot)com>, Nathan Bossart <nathandbossart(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, Stephen Frost <sfrost(at)snowman(dot)net>, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, Peter Smith <smithpb2250(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, alvherre(at)alvh(dot)no-ip(dot)org |
| Subject: | Re: Statistics Import and Export |
| Date: | 2025-02-26 02:29:56 |
| Message-ID: | CADkLM=cG8=gde_KjGiQC_wt0K3knJCy_mwvd-sW=f=3M2eSrEg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Feb 25, 2025 at 9:00 PM Jeff Davis <pgsql(at)j-davis(dot)com> wrote:
> On Mon, 2025-02-24 at 09:54 -0500, Andres Freund wrote:
> > Have you compared performance of with/without stats after these
> > optimizations?
>
> On unoptimized build with asserts enabled, dumping the regression
> database:
>
> --no-statistics: 1.0s
> master: 3.6s
> v3j-0001: 3.0s
> v3j-0002: 1.7s
>
> I plan to commit the patches soon.
>
> Regards,
> Jeff Davis
>
>
+1 from me
We can still convert the "EXECUTE getAttributeStats" call to a Params call,
but that involves creating an ExecuteSqlQueryParams(), which starts to
snowball in the changes required.
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