Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1YKtfs-0000o6-FF for pgsql-performance@arkaria.postgresql.org; Mon, 09 Feb 2015 19:07:12 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1YKtfr-00013u-Uj for pgsql-performance@arkaria.postgresql.org; Mon, 09 Feb 2015 19:07:11 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1YKtfq-00013n-Oq for pgsql-performance@postgresql.org; Mon, 09 Feb 2015 19:07:10 +0000 Received: from mwork.nabble.com ([162.253.133.43]) by makus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1YKtfn-0001qz-0y for pgsql-performance@postgresql.org; Mon, 09 Feb 2015 19:07:08 +0000 Received: from msam.nabble.com (unknown [162.253.133.85]) by mwork.nabble.com (Postfix) with ESMTP id 981A8135A0C2 for ; Mon, 9 Feb 2015 11:07:05 -0800 (PST) Date: Mon, 9 Feb 2015 12:07:05 -0700 (MST) From: bkrug To: pgsql-performance@postgresql.org Message-ID: <1423508825585-5837251.post@n5.nabble.com> In-Reply-To: References: <1423497516487-5837222.post@n5.nabble.com> <1423507553954-5837247.post@n5.nabble.com> Subject: Re: Avoiding Refreezing XIDs Repeatedly MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -1.2 (-) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-performance Precedence: bulk Sender: pgsql-performance-owner@postgresql.org The problem I'm facing is that I have many large (several GB) tables that are not being changed (they are several days old) but auto-vacuum keeps scanning and updating them every time the xid wraps around and thus my rsync back-up process sees that the disk files have changed and must copy them. -- View this message in context: http://postgresql.nabble.com/Avoiding-Refreezing-XIDs-Repeatedly-tp5837222p5837251.html Sent from the PostgreSQL - performance mailing list archive at Nabble.com. -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance