Received: from maia.hub.org (unknown [200.46.204.251]) by mail.postgresql.org (Postfix) with ESMTP id D69571337BAE for ; Thu, 21 Oct 2010 10:15:52 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.251]) (amavisd-maia, port 10024) with ESMTP id 37857-10 for ; Thu, 21 Oct 2010 13:15:45 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from web29002.mail.ird.yahoo.com (web29002.mail.ird.yahoo.com [212.82.110.133]) by mail.postgresql.org (Postfix) with SMTP id 2032A1337B90 for ; Thu, 21 Oct 2010 10:15:43 -0300 (ADT) Received: (qmail 21466 invoked by uid 60001); 21 Oct 2010 13:15:43 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.it; s=s1024; t=1287666943; bh=8mwwV3ki0b62LJVXLaAmFTHd0r7b/7ZtzMZgVvsYhcg=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=K+LWlGd83plVdEV9BkxYTQCjLjwSyEsclNj2hhu43BoUFzv5aNxDSQbfZ3dcY1/PzG4LJ9SPN1W/jTERSMx4SViquIpiFV0mKBxVvLm86X9l0l/xTIJbaIA1rHs4xZeSev6mCJ11ulVKHoKnCC4tpSgkP+Hk1dsqZR/+y+JwVHk= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.it; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=NWo84x+GWwv7VXcyhYWLgxFlWxHfmfIvB959v6bA0B8wYGyhU4VZX8HzWghM2BMhPem/FZGbkUfDEvA+4+GaWa7zUojiXtL8u+fFGxo6e6B1Rwk4qZ2oE/oMeFrhQcShTMpobC2bDm1B89+AAjyoI/azGNlzgKXxkQpZIw5h2qI=; Message-ID: <857928.20870.qm@web29002.mail.ird.yahoo.com> X-YMail-OSG: JRVKIGAVM1nP2EBkygb8I3oA40JYGEo6KYlggc1lKaWPWig pKjHIlrZozUR1kNiW0jfRjm7gNHGQ42.VR2QLDfsSJPd4tdX1.G1fp0jZs9L 4d2uf5HQSGnyiNmSLHiIh_2CRPIpEOHs4ybU7f8accLnFLTFsGi98bOhxj7w Dw3N5GpSdb7m0H9RZW05g2tAvEOE6_na2GFCASrKrVMZ7LaXH67ERpgg- Received: from [85.33.62.89] by web29002.mail.ird.yahoo.com via HTTP; Thu, 21 Oct 2010 14:15:40 BST X-Mailer: YahooMailRC/504.5 YahooMailWebService/0.8.106.282862 References: Date: Thu, 21 Oct 2010 14:15:40 +0100 (BST) From: Leonardo Francalanci Subject: Re: Periodically slow inserts To: Gael Le Mignot , pgsql-performance@postgresql.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.9 tagged_above=-10 required=5 tests=BAYES_00=-1.9 X-Spam-Level: X-Archive-Number: 201010/340 X-Sequence-Number: 40758 =0A> We are using PostgreSQL for storing data and full-text search ind= exes=0A> for the webiste of a daily newspaper. We are very happy overall w= ith the=0A> results, but we have one "weird" behaviour that we would like = to solve.=0A=0A=0AI think there's a lot of missing info worth knowing:=0A= =0A1) checkpoints logs? Enable them, maybe the "slowness" happens=0Aat chec= kpoints:=0A=0Alog_checkpoints=3Dtrue=0A=0A2) How many rows does each table = contain?=0A=0A3) HW: how many discs you have, and which controller you're u= sing (and:=0Adoes it use a BBU?)=0A=0AThe more you tell the list, the bette= r help you'll get...=0A=0A=0A