Re: Emit fewer vacuum records by reaping removable tuples during pruning

From: Melanie Plageman <melanieplageman(at)gmail(dot)com>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Peter Geoghegan <pg(at)bowt(dot)ie>, Michael Paquier <michael(at)paquier(dot)xyz>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, Andres Freund <andres(at)anarazel(dot)de>
Subject: Re: Emit fewer vacuum records by reaping removable tuples during pruning
Date: 2024-01-19 02:23:44
Message-ID: CAAKRu_YV-o3PQ9JHM1ux=A4juiBEPw9D_T3Xo8B17RZ=So2Fhw@mail.gmail.com
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On Thu, Jan 18, 2024 at 3:20 PM Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>
> On Thu, Jan 18, 2024 at 10:09 AM Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> > Oh, I see. Good catch.
> >
> > I've now committed 0001.
>
> I have now also committed 0002 and 0003. I made some modifications to
> 0003. Specifically:
>
> - I moved has_lpdead_items inside the loop over blocks instead of
> putting it at the function toplevel.
> - I adjusted the comments in lazy_scan_prune() because it seemed to me
> that the comment about "Now scan the page..." had gotten too far
> separated from the loop where that happens.
> - I combined two lines in an if-test because one of them was kinda short.
>
> Hope that's OK with you.

Awesome, thanks!

I have attached a rebased version of the former 0004 as v11-0001.

- Melanie

Attachment Content-Type Size
v11-0001-Combine-FSM-updates-for-prune-and-no-prune-cases.patch text/x-patch 6.2 KB

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