Re: Vacuum statistics

From: Andrei Zubkov <zubkov(at)moonset(dot)ru>
To: Alena Rybakina <lena(dot)ribackina(at)yandex(dot)ru>
Cc: Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Andrei Lepikhov <lepihov(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Alexander Korotkov <aekorotkov(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Jim Nasby <jnasby(at)upgrade(dot)com>, Bertrand Drouvot <bertranddrouvot(dot)pg(at)gmail(dot)com>, Kirill Reshke <reshkekirill(at)gmail(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Melanie Plageman <melanieplageman(at)gmail(dot)com>, jian he <jian(dot)universality(at)gmail(dot)com>, Sami Imseih <samimseih(at)gmail(dot)com>, vignesh C <vignesh21(at)gmail(dot)com>, Ilia Evdokimov <ilya(dot)evdokimov(at)tantorlabs(dot)com>
Subject: Re: Vacuum statistics
Date: 2026-03-17 15:27:00
Message-ID: 87bjgmlbnf.fsf@desktop.moonset.ru
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Alena Rybakina <lena(dot)ribackina(at)yandex(dot)ru> writes:

Hi, Alena!

I have some thoughts about your descriptions in the docs (V34). It looks
clearer now, but in seems to me it still contains some inaccuracy..

1. Naming: The meaning of 'visible/frozen_pages_cleared' seems to me as
cleared pages rather then cleared marks... Maybe it should be
'visible_page_marks_cleared'?

2. Mention of a <command>VACUUM</command> in the docs may be understood
as related to manual VACUUM command only. However, autovacuum is
accounted as well.. I think we can use just term 'vacuum' here as a
facility rather than command.

--
regards, Andrei Zubkov
Postgres Professional

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