Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.92) (envelope-from ) id 1jGrdf-0003Vq-HW for pgsql-admin@arkaria.postgresql.org; Tue, 24 Mar 2020 22:03:11 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1jGrcg-0000aS-4E for pgsql-admin@arkaria.postgresql.org; Tue, 24 Mar 2020 22:02:10 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1jGrcf-0000aL-R4 for pgsql-admin@lists.postgresql.org; Tue, 24 Mar 2020 22:02:09 +0000 Received: from excelsior.roeckx.be ([2a05:7300:0:100::3]) by magus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jGrcd-0000QZ-Mr for pgsql-admin@lists.postgresql.org; Tue, 24 Mar 2020 22:02:09 +0000 Received: from intrepid.roeckx.be (localhost [127.0.0.1]) by excelsior.roeckx.be (Postfix) with ESMTP id 88855A8A0382; Tue, 24 Mar 2020 22:02:05 +0000 (UTC) Received: by intrepid.roeckx.be (Postfix, from userid 1000) id 261581FE0CCD; Tue, 24 Mar 2020 23:02:03 +0100 (CET) Date: Tue, 24 Mar 2020 23:02:02 +0100 From: Kurt Roeckx To: Rui DeSousa Cc: Laurenz Albe , pgsql-admin@lists.postgresql.org Subject: Re: Append only tables Message-ID: <20200324220202.GN22330@roeckx.be> References: <20200320215053.GH22330@roeckx.be> <6299ca7d13bd6e3ba3fec9de173226a862b14585.camel@cybertec.at> <20200324184151.GM22330@roeckx.be> <1B98792C-304F-4248-8B3F-7435F32B1551@crazybean.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1B98792C-304F-4248-8B3F-7435F32B1551@crazybean.net> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk On Tue, Mar 24, 2020 at 04:59:39PM -0400, Rui DeSousa wrote: > > > > On Mar 24, 2020, at 2:41 PM, Kurt Roeckx wrote: > > > > I think I'll set autovacuum_freeze_max_age a lot lower than the default > > 200 M. > > Hmm… not sure what you really want to accomplish? > > Administrating a high volume database and went the other way; with it set to 800M; however, auto vacuum set aggressively. The only other setting I see is autovacuum_vacuum_threshold, which only looks at updates and deletes. Kurt