Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1X7qoO-0001iu-Gg for pgsql-general@arkaria.postgresql.org; Thu, 17 Jul 2014 18:53:48 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1X7qoN-0005bv-Dv for pgsql-general@arkaria.postgresql.org; Thu, 17 Jul 2014 18:53:47 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1X7qoL-0005Z5-0L for pgsql-general@postgresql.org; Thu, 17 Jul 2014 18:53:45 +0000 Received: from virtual1.potentialtech.com ([69.25.178.43] helo=mail.potentialtech.com) by magus.postgresql.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1X7qoB-0004vA-KR for pgsql-general@postgresql.org; Thu, 17 Jul 2014 18:53:43 +0000 Received: from working.home (c-67-165-86-201.hsd1.pa.comcast.net [67.165.86.201]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.potentialtech.com (Postfix) with ESMTPSA id 5999C224AAA; Thu, 17 Jul 2014 14:53:30 -0400 (EDT) Date: Thu, 17 Jul 2014 14:53:22 -0400 From: Potentialtech To: Tom Lane Cc: Prabhjot Sheena , Forums postgresql Subject: Re: Checkpoint_segments optimal value Message-Id: <20140717145322.0029297552ba3c692c52a96f@potentialtech.com> In-Reply-To: <7639.1405620388@sss.pgh.pa.us> References: <20140717140103.4e8c05e8ef5b89817b4d160a@potentialtech.com> <7639.1405620388@sss.pgh.pa.us> X-Mailer: Sylpheed 3.4.2 (GTK+ 2.24.22; amd64-portbld-freebsd10.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -1.9 (-) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-general Precedence: bulk Sender: pgsql-general-owner@postgresql.org On Thu, 17 Jul 2014 14:06:28 -0400 Tom Lane wrote: > Potentialtech writes: > > If the warning isn't happening too often, I would try increasing it only a > > little and see if it helps. If it's not enough you can then increase it some > > more. Various sources around the Internet suggest that you don't want to go > > much larger than 256 for this (if only because it's uncommon to do so and is > > probably indicative of other tuning that you need to do). Unfortunatley, you > > need to restart PG for the change to take effect, so you have to balance > > experimenting with your tuning against how often you can get away with a server > > restart. > > Huh? You don't need a restart, just a reload (SIGHUP) to change that. Really? Well, thanks for correcting me on that. -- Potentialtech -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general