vacuum_freeze_min_age description validity

From: PG Doc comments form <noreply(at)postgresql(dot)org>
To: pgsql-docs(at)lists(dot)postgresql(dot)org
Cc: sanjaya(dot)waruna(at)gmail(dot)com
Subject: vacuum_freeze_min_age description validity
Date: 2021-09-17 08:54:29
Message-ID: 163186886974.4680.11795770889268302099@wrigleys.postgresql.org
Views: Whole Thread | Raw Message | Download mbox | Resend email
Thread:
Lists: pgsql-docs

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/10/routine-vacuuming.html
Description:

Hi All,
I have a doubt about the vacuum_freeze_min_age explanation here;
https://www.postgresql.org/docs/10/routine-vacuuming.html
"vacuum_freeze_min_age controls how old an XID value has to be before rows
bearing that XID will be frozen. Increasing this setting may avoid
unnecessary work if the rows that would otherwise be frozen will soon be
modified again, but decreasing this setting increases the number of
transactions that can elapse before the table must be vacuumed again."

Shouldn't the "Increasing" and "decreasing" words there interchange the
places?
Isn't decreasing value for vacuum_freeze_min_age causes vacuum to freeze
tuples soon due to reduced age? So it reduces number of transactions that
can elapse before the table must be vacuumed.
Please let me know if my understanding is incorrect.

Cheers,
Sanjaya.

Responses

Browse pgsql-docs by date

  From Date Subject
Next Message Laurenz Albe 2021-09-17 22:08:03 Re: vacuum_freeze_min_age description validity
Previous Message David G. Johnston 2021-09-16 18:40:26 Re: 13 25.1.1 clarify "The dumps produced by pg_dump are relative to template0"