Re: checkpoint occurs very often when vacuum full running

From: Sergei Kornilov <sk(at)zsrv(dot)org>
To: Mariel Cherkassky <mariel(dot)cherkassky(at)gmail(dot)com>, "pgsql-admin(at)lists(dot)postgresql(dot)org" <pgsql-admin(at)lists(dot)postgresql(dot)org>, "pgsql-performance(at)lists(dot)postgresql(dot)org" <pgsql-performance(at)lists(dot)postgresql(dot)org>
Subject: Re: checkpoint occurs very often when vacuum full running
Date: 2018-11-15 19:10:42
Message-ID: 6028761542309042@myt3-c573aa6fc782.qloud-c.yandex.net
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Hi

Checkpoint can be occurs due timeout (checkpoint_timeout) or due amount of WAL (max_wal_size).
Vacuum full does write all data through WAL and therefore may trigger checkpoint more frequently.

regards, Sergei

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