Re: Trigger more frequent autovacuums of heavy insert tables

Nathan Bossart <nathandbossart@gmail.com>

From: Nathan Bossart <nathandbossart@gmail.com>

To: Melanie Plageman <melanieplageman@gmail.com>

Cc: Robert Treat <rob@xzilla.net>, Greg Sabino Mullane <htamfids@gmail.com>, Robert Haas <robertmhaas@gmail.com>, Pg Hackers <pgsql-hackers@postgresql.org>, Andres Freund <andres@anarazel.de>, Peter Geoghegan <pg@bowt.ie>, David Rowley <dgrowley@gmail.com>, Corey Huinker <corey.huinker@gmail.com>

Date: 2025-11-18T20:20:51Z

Lists: pgsql-hackers

Attachments

v1-0001-fix-insert-vacuum-docs.patch (text/plain)

On Tue, Nov 11, 2025 at 12:48:39PM -0600, Nathan Bossart wrote:
> I think maintenance.sgml needs an update (specifically, the part about the
> insert threshold [0]).

Here is a first try.

-- 
nathan

Commits

doc: Update formula for vacuum insert threshold.
- cbdce71b9984 19 (unreleased) landed
- c99436f43322 18.2 landed
Redefine pg_class.reltuples to be -1 before the first VACUUM or ANALYZE.
- 3d351d916b20 14.0 cited
Measure the number of all-visible pages for use in index-only scan costing.
- e6858e665731 9.2.0 cited