Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1VemEH-0002Fq-87 for pgsql-admin@arkaria.postgresql.org; Fri, 08 Nov 2013 13:36:05 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1VemEG-000207-OX for pgsql-admin@arkaria.postgresql.org; Fri, 08 Nov 2013 13:36:04 +0000 Received: from makus.postgresql.org ([2001:4800:7903:4::125]) by malur.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1Vem4J-0008Au-4s for pgsql-admin@postgresql.org; Fri, 08 Nov 2013 13:25:47 +0000 Received: from mail-ea0-x236.google.com ([2a00:1450:4013:c01::236]) by makus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1Vem4F-0005VZ-Vo for pgsql-admin@postgresql.org; Fri, 08 Nov 2013 13:25:46 +0000 Received: by mail-ea0-f182.google.com with SMTP id o10so1116870eaj.13 for ; Fri, 08 Nov 2013 05:25:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:user-agent:in-reply-to :references:mime-version:content-transfer-encoding:content-type; bh=cJptd1JyuOzlDPjazeJkOxOxbpIvrbdqw6jA1VLVcto=; b=BmGVRmp3x6HRt4iqRoYYFCsdcw/IT3rLuC6TBbEzvh3LBjvqi/up0CKgowq0VPRc0Y k1wb31F2af9VxUxivZZEFLuE7qADNxvb5kRa4/RRNshgrYrdNxb8xF5VMqC003JBnUcK fStIm3scVy+MlHO5WjtOYlT47+MA1NTLzE0M0udnhCf5eWAoiuCuDDEgttn4YjlFiCyy XAR5xCjpCWtKJK+g5tCAiS4I57gqNQkYeFUWCAIx0ZlhAIXXdWG7/zeAp2cMVvFXgXo+ va392UOGhjParr8C61X4wYiCuGguCj/uxVjkcHUURjM5YEAtkpANOeonf3b3HrWQtMC6 lsIg== X-Received: by 10.14.107.68 with SMTP id n44mr16950794eeg.26.1383917141957; Fri, 08 Nov 2013 05:25:41 -0800 (PST) Received: from shu.localnet ([89.38.174.207]) by mx.google.com with ESMTPSA id e13sm22820271eeu.4.2013.11.08.05.25.41 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 08 Nov 2013 05:25:41 -0800 (PST) From: Robert Voinea To: bricklen Cc: "pgsql-admin@postgresql.org" Subject: Re: Occasional spike in query response time (jumps from 200ms to 45 seconds) Date: Fri, 08 Nov 2013 15:25:40 +0200 Message-ID: <1609445.bRHEtEVPHv@shu> User-Agent: KMail/4.11.1 (Linux/3.10.12-031012-generic; KDE/4.11.1; i686; ; ) In-Reply-To: References: <16690513.cUljA3p6su@shu> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" X-Pg-Spam-Score: -2.0 (--) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-admin Precedence: bulk Sender: pgsql-admin-owner@postgresql.org Hi On Thursday 07 November 2013 06:37:57 bricklen wrote: > On Thu, Nov 7, 2013 at 2:44 AM, Robert Voinea wrote: > > Could you give me some hints on what to look for? > > What might be causing this behavior? > > Possibly checkpointing is the problem? Is "log_checkpoints" enabled in your > postgresql.conf? What is "checkpoint_completion_target" set to? The parameters are commented out, so they are at their default values. Thank you for replying. I'll investigate this further to see if this is the problem. -- Robert Voinea Software Engineer +4 0740 467 262 Don't take life too seriously. You'll never get out of it alive. (Elbert Hubbard) -- Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin