Received: from maia.hub.org (unknown [200.46.204.183]) by mail.postgresql.org (Postfix) with ESMTP id E302E632FB3 for ; Thu, 18 Mar 2010 06:08:12 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 49905-07 for ; Thu, 18 Mar 2010 09:08:02 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from outmail128165.authsmtp.com (outmail128165.authsmtp.com [62.13.128.165]) by mail.postgresql.org (Postfix) with ESMTP id 5150163272C for ; Thu, 18 Mar 2010 06:08:02 -0300 (ADT) Received: from mail-c194.authsmtp.com (mail-c194.authsmtp.com [62.13.128.121]) by punt2.authsmtp.com (8.14.2/8.14.2/Kp) with ESMTP id o2I97xOe071790; Thu, 18 Mar 2010 09:07:59 GMT Received: from [192.168.0.4] (88-110-151-22.dynamic.dsl.as9105.com [88.110.151.22]) (authenticated bits=0) by mail.authsmtp.com (8.14.2/8.14.2/Kp) with ESMTP id o2I97wC0014384; Thu, 18 Mar 2010 09:07:58 GMT Subject: Re: PITR load on servers - increased 20% From: Simon Riggs To: Renato Oliveira Cc: "pgsql-admin@postgresql.org" In-Reply-To: <7965A9DCF12CC14984420BCC37B1608F25AAFB989B@Elzar.grant.co.uk> References: <4B9A6E8B.4050303@magneta.com.cy> <1268556612.3825.5025.camel@ebony> <4B9DFD67.3050106@magneta.com.cy> <1268647021.3825.7469.camel@ebony> <7965A9DCF12CC14984420BCC37B1608F25AAFB989B@Elzar.grant.co.uk> Content-Type: text/plain Date: Thu, 18 Mar 2010 09:07:57 +0000 Message-Id: <1268903277.3827.1699.camel@ebony> Mime-Version: 1.0 X-Mailer: Evolution 2.26.1 Content-Transfer-Encoding: 7bit X-Server-Quench: bf7e1572-326d-11df-80b9-0022640b883e X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCdxZQATClZOTQEd DAteCiN5VAwpPBRK HVkIKg5MJUcNSQVJ NksadBtFaQ1bYFhD HGQLWlREUFR7WWR/ bgIfZQ1DY0tOQQRv UVZLQE1XHAJ3AVJe BGcXVV4BdwVHfH14 YQhgWXZbEhYschN8 R0lWCG4EYzN9aWFL Bl1Qd1FdbQNKfB1D blAtXHsONCtlM3Bw LCYfGhEXCH1nCRhv CgUKJF5aRkBDBTMm WR0YBn1qVUwDTD8+ JgcrJhZGRAt5 X-Authentic-SMTP: 61633235383639.1015:706/Kp X-AuthFastPath: 0 (Was 255) X-AuthVirus-Status: No virus detected - but ensure you scan with your own anti-virus system. X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-2.599 tagged_above=-10 required=5 tests=BAYES_00=-2.599 X-Spam-Level: X-Archive-Number: 201003/120 X-Sequence-Number: 33919 On Tue, 2010-03-16 at 10:05 +0000, Renato Oliveira wrote: > I have been testing PITR and I have noticed a 20% increase on the load of the Disk subsystem. > > Is that a normal thing to expect? Have you come across this or have you noticed this increase? > > I know some of you guys have been using it for quite some time, would you mind in sharing your experiences, please? I think you need to explain what things you've been testing and how. There are some well documented bulk data load optimizations that we cannot take advantage of when running archiving, but apart from those the load is actually very low in normal running. -- Simon Riggs www.2ndQuadrant.com