| From: | Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
|---|---|
| To: | John Naylor <johncnaylorls(at)gmail(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Nathan Bossart <nathandbossart(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, Yura Sokolov <y(dot)sokolov(at)postgrespro(dot)ru> |
| Subject: | Re: [PoC] Improve dead tuple storage for lazy vacuum |
| Date: | 2024-03-29 06:05:36 |
| Message-ID: | CAD21AoAidpZWR_YuvJtkw7zRDXJK5DhJ6YD5_N4Ea6+mApkOFQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Mar 28, 2024 at 6:15 PM John Naylor <johncnaylorls(at)gmail(dot)com> wrote:
>
> On Thu, Mar 28, 2024 at 12:55 PM Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
> >
> > Pushed the refactoring patch.
> >
> > I've attached the rebased vacuum improvement patch for cfbot. I
> > mentioned in the commit message that this patch eliminates the 1GB
> > limitation.
> >
> > I think the patch is in good shape. Do you have other comments or
> > suggestions, John?
>
> I'll do another pass tomorrow, but first I wanted to get in another
> slightly-challenging in-situ test.
Thanks!
>
> About the "tuples missed" -- I didn't expect contention during this
> test. I believe that's completely unrelated behavior, but wanted to
> mention it anyway, since I found it confusing.
I don't investigate it enough but bgwriter might be related to the contention.
Regards,
--
Masahiko Sawada
Amazon Web Services: https://aws.amazon.com
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