Received: from localhost (maia-5.hub.org [200.46.204.182]) by postgresql.org (Postfix) with ESMTP id D0D4E9FC03F for ; Thu, 7 Jun 2007 12:38:17 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.182]) (amavisd-maia, port 10024) with ESMTP id 08311-06 for ; Thu, 7 Jun 2007 12:38:13 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.4 Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.175]) by postgresql.org (Postfix) with ESMTP id 4A0949FBF8F for ; Thu, 7 Jun 2007 12:38:14 -0300 (ADT) Received: by ug-out-1314.google.com with SMTP id u2so779602uge for ; Thu, 07 Jun 2007 08:38:12 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=googlemail.com; s=beta; h=domainkey-signature:received:received:message-id:date:user-agent:mime-version:to:subject:references:in-reply-to:content-type:content-transfer-encoding:from; b=h8Pw5rMpoKjXE2wBnoqgCvLmpgDCshDd1fGo9uDUHYr7Xa/VpUqDegBmvXxDMERlbeJcDKHygoEplrUbq3alV4ljjGj6/dv02q8fYYz4lCN967KSZyC2CjxMYB4YI85n5Fbmo6WCP2nvdnEXj4dZNg0roucpmSS3lRjQiWPGYjg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=beta; h=received:message-id:date:user-agent:mime-version:to:subject:references:in-reply-to:content-type:content-transfer-encoding:from; b=edeygJuiZBpBpzpnix1jhS5OruSM4dnhNB+7jWZzg7WnP1xjrwlR4AhBOm171EOBIWZf2Yhnfv2wdA4ktN51cGUN+lG/Du2IitKO9nFNUmtWz2WDLUIfl9zCmYE85hIY02X1Bh45MKiBnzJzQbvIkRdAr2WWrgSXYSSCav4Yv4s= Received: by 10.66.242.5 with SMTP id p5mr2104878ugh.1181230691538; Thu, 07 Jun 2007 08:38:11 -0700 (PDT) Received: from ?172.16.186.5? ( [196.7.14.186]) by mx.google.com with ESMTP id 32sm3335374ugf.2007.06.07.08.38.10 (version=TLSv1/SSLv3 cipher=RC4-MD5); Thu, 07 Jun 2007 08:38:11 -0700 (PDT) Message-ID: <4668265D.2010200@gmail.com> Date: Thu, 07 Jun 2007 17:38:05 +0200 User-Agent: Thunderbird 1.5.0.12 (X11/20070604) MIME-Version: 1.0 To: pgsql-performance@postgresql.org Subject: Re: VERY slow queries at random References: <46670916.9090505@gmail.com> <466726D3.7050102@g2switchworks.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit From: Gunther Mayer X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200706/131 X-Sequence-Number: 25164 Kristo Kaiv wrote: > could be that the checkpoints are done too seldom. > what is your wal checkpoint config? > wal checkpoint config is on pg defaults everywhere, all relevant config options are commented out. I'm no expert in wal stuff but I don't see how that could cause the problem? Gunther