Re: Proposal: Limitations of palloc inside checkpointer

Xuneng Zhou <xunengzhou@gmail.com>

From: Xuneng Zhou <xunengzhou@gmail.com>

To: Alexander Korotkov <aekorotkov@gmail.com>

Cc: Heikki Linnakangas <hlinnaka@iki.fi>, Maxim Orlov <orlovmg@gmail.com>, Andres Freund <andres@anarazel.de>, Ekaterina Sokolova <e.sokolova@postgrespro.ru>, PostgreSQL-development <pgsql-hackers@postgresql.org>

Date: 2025-07-25T12:23:21Z

Lists: pgsql-hackers

Hi, Alexander

Thanks for reviewing and feedback!

> The v8 is attached.  It's basically the same as v6, but has revised
> commit message and comments.
>
> The patch for stable branches is also attached: it just limits the
> maximum size of the checkpointer requests queue.

LGTM.

Best,
Xuneng

Commits

Fix checkpointer shared memory allocation
- 605890034805 17.6 landed
- 7f872ae7020e 13.22 landed
- c5d66fc12b08 14.19 landed
- 73f897ba5836 15.14 landed
- 2ac50f1187c2 16.10 landed
- 5cfbff48a4fd 18.0 landed
- 466c5435fd45 19 (unreleased) landed
Limit checkpointer requests queue size
- f32a471612c9 13.22 landed
- 50026136cc86 14.19 landed
- f0cdc2afd15e 16.10 landed
- b248a3ba4e51 15.14 landed
- 13559de95383 17.6 landed
- bae50782170c 18.0 landed
Process sync requests incrementally in AbsorbSyncRequests
- 258bf0a2ea8f 19 (unreleased) landed