RE: How can i be certain autovacuum is causing reuse if table still grows

Thank you Ron but this table has no date column.

It has one line for each page of each scanned document.

________________________________
De: Ron <ronljohnsonjr(at)gmail(dot)com>
Enviado: segunda-feira, 27 de julho de 2020 18:27
Para: pgsql-admin(at)lists(dot)postgresql(dot)org <pgsql-admin(at)lists(dot)postgresql(dot)org>
Assunto: Re: How can i be certain autovacuum is causing reuse if table still grows

Another suggestion is to partition the table by a chronological key, so that only a fraction of the table needs to be vacuumed.

On 7/27/20 3:36 PM, Sidney Aloisio Ferreira Pryor wrote:
Thank you, David.
So can i assume that autovacuum only release dead tuples when it ends its execution?

Autovacuum is not finishing and is running for days.
We did not find a parameter to limit autovacuum executing time.
Do you have any recomendation?

Thank you.
Sidney.
________________________________
De: David G. Johnston <david(dot)g(dot)johnston(at)gmail(dot)com><mailto:david(dot)g(dot)johnston(at)gmail(dot)com>
Enviado: segunda-feira, 27 de julho de 2020 17:17
Para: Sidney Aloisio Ferreira Pryor <sidney(at)tjrj(dot)jus(dot)br><mailto:sidney(at)tjrj(dot)jus(dot)br>
Cc: pgsql-admin(at)lists(dot)postgresql(dot)org<mailto:pgsql-admin(at)lists(dot)postgresql(dot)org> <pgsql-admin(at)lists(dot)postgresql(dot)org><mailto:pgsql-admin(at)lists(dot)postgresql(dot)org>
Assunto: Re: How can i be certain autovacuum is causing reuse if table still grows

On Monday, July 27, 2020, Sidney Aloisio Ferreira Pryor <sidney(at)tjrj(dot)jus(dot)br<mailto:sidney(at)tjrj(dot)jus(dot)br>> wrote:
Hi, we have a 9.6.5 postgres

Autovacuum is set with default parameters and is running on this table for days without naping or stopping.

3285 | -5 days -23:33:10.792166 | postgres | autovacuum: VACUUM ANALYZE public.flip_pagina_edicao (to prevent wraparound)
(1 rows)

Its probably best avoid drawing conclusions here until the anti-wraparound vacuum has completed and you’ve updated to the latest minor version of PostgreSQL.

David J.

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