Received: from localhost (unknown [200.46.204.182]) by postgresql.org (Postfix) with ESMTP id 948622E028E for ; Thu, 3 Jan 2008 14:31:18 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.182]) (amavisd-maia, port 10024) with ESMTP id 28909-02 for ; Thu, 3 Jan 2008 14:31:14 -0400 (AST) Received: from lists.commandprompt.com (host-159.commandprompt.net [207.173.203.159]) by postgresql.org (Postfix) with ESMTP id 708642E181E for ; Thu, 3 Jan 2008 14:31:15 -0400 (AST) Received: from perhan.alvh.no-ip.org (200-126-101-79.bk7-dsl.surnet.cl [200.126.101.79]) (authenticated bits=0) by lists.commandprompt.com (8.13.8/8.13.8) with ESMTP id m03IVDG2021847 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 3 Jan 2008 10:31:16 -0800 Received: by perhan.alvh.no-ip.org (Postfix, from userid 1000) id 7069E47C8C; Thu, 3 Jan 2008 15:31:18 -0300 (CLST) Date: Thu, 3 Jan 2008 15:31:18 -0300 From: Alvaro Herrera To: Jakub Ouhrabka Cc: pgsql-performance@postgresql.org Subject: Re: Linux/PostgreSQL scalability issue - problem with 8 cores Message-ID: <20080103183118.GA14593@alvh.no-ip.org> References: <477D0D00.9040206@aeccom.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.0 (lists.commandprompt.com [207.173.203.159]); Thu, 03 Jan 2008 10:31:16 -0800 (PST) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200801/10 X-Sequence-Number: 28249 Jakub Ouhrabka wrote: > > - do an UNLISTEN if possible > > Yes, we're issuing unlistens when appropriate. You are vacuuming pg_listener periodically, yes? Not that this seems to have any relationship to your problem, but ... -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc.