Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1VYPP4-0004dd-Kw for pgsql-performance@arkaria.postgresql.org; Tue, 22 Oct 2013 00:00:54 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1VYPP3-00065p-VV for pgsql-performance@arkaria.postgresql.org; Tue, 22 Oct 2013 00:00:54 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1VYPP2-00065P-RZ for pgsql-performance@postgresql.org; Tue, 22 Oct 2013 00:00:52 +0000 Received: from sam.nabble.com ([216.139.236.26]) by magus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1VYPOw-0002Am-Qw for pgsql-performance@postgresql.org; Tue, 22 Oct 2013 00:00:51 +0000 Received: from [192.168.236.26] (helo=sam.nabble.com) by sam.nabble.com with esmtp (Exim 4.72) (envelope-from ) id 1VYPOv-0003ap-7x for pgsql-performance@postgresql.org; Mon, 21 Oct 2013 17:00:45 -0700 Date: Mon, 21 Oct 2013 17:00:45 -0700 (PDT) From: sparikh To: pgsql-performance@postgresql.org Message-ID: <1382400045239-5775361.post@n5.nabble.com> In-Reply-To: <5265B562.3040407@fuzzy.cz> References: <1381869626548-5774673.post@n5.nabble.com> <1382291901534-5775181.post@n5.nabble.com> <526460B7.3020008@fuzzy.cz> <1382367933794-5775257.post@n5.nabble.com> <52658780.1040002@fuzzy.cz> <1382390332002-5775332.post@n5.nabble.com> <5265A28E.4060601@fuzzy.cz> <1382396377294-5775349.post@n5.nabble.com> <5265B562.3040407@fuzzy.cz> Subject: Re: Hot Standby performance issue MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -0.8 (/) 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 > Do you suggest if I remove all the data files from /data/base folder > of standby and again rebuild using rsync from primary ? do you see > any issues there.? This is just to rule out any fragmentation on > standby side. The EXPLAIN really should not do much I/O. I doubt it has anything to do with fragmentation, so I doubt this is going to help. Actually I was referring to this in the context of addressing main underlying performance issue, not EXPLAIN. Sorry, I may not have communicated it correctly. Even strance does not seem to be installed. The filesytem type it shows to me ext3. Thanks. -- View this message in context: http://postgresql.1045698.n5.nabble.com/Hot-Standby-performance-issue-tp5774673p5775361.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