Received: from makus.postgresql.org ([98.129.198.125]) by malur.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1TNmXU-00077A-6t for pgsql-performance@postgresql.org; Mon, 15 Oct 2012 15:25:08 +0000 Received: from host36.ns3.it ([80.79.54.36] helo=mail.opinioni.net) by makus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1TNmXO-0001Xq-GK for pgsql-performance@postgresql.org; Mon, 15 Oct 2012 15:25:07 +0000 Received: from localhost (localhost [127.0.0.1]) by mail.opinioni.net (Postfix) with ESMTP id 26A854E224B; Mon, 15 Oct 2012 17:27:41 +0200 (CEST) Received: from mail.opinioni.net ([127.0.0.1]) by localhost (opinioni.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id l80R8-znhTT9; Mon, 15 Oct 2012 17:27:41 +0200 (CEST) Received: from [192.168.1.50] (78-134-6-72.v4.ngi.it [78.134.6.72]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.opinioni.net (Postfix) with ESMTPS id DA3244E2249; Mon, 15 Oct 2012 17:27:40 +0200 (CEST) Message-ID: <507C2ACA.3020503@opinioni.net> Date: Mon, 15 Oct 2012 17:24:58 +0200 From: Andrea Suisani User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121011 Thunderbird/16.0.1 MIME-Version: 1.0 To: Claudio Freire CC: Craig James , pgsql-performance@postgresql.org Subject: Re: Two identical systems, radically different performance References: <5076D433.7090605@opinioni.net> <5076DA4E.80504@opinioni.net> <507BC8DE.9050109@opinioni.net> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -1.9 (-) X-Archive-Number: 201210/185 X-Sequence-Number: 48144 On 10/15/2012 05:01 PM, Claudio Freire wrote: > On Mon, Oct 15, 2012 at 5:27 AM, Andrea Suisani wrote: >> it seems strange that disabling >> HT from the bios will give lesser TPS that HT disable through >> sysfs interface. > > It does prove they're not equivalent though. > sure you're right. It's just that my bet was on a higher throughput when HT was isabled from the BIOS (as you stated previously in this thread). Andrea