Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1XKbnV-0008HC-6Q for pgsql-performance@arkaria.postgresql.org; Thu, 21 Aug 2014 23:29:37 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1XKbnT-00069V-M4 for pgsql-performance@arkaria.postgresql.org; Thu, 21 Aug 2014 23:29:35 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1XKbnS-00069M-G4 for pgsql-performance@postgresql.org; Thu, 21 Aug 2014 23:29:34 +0000 Received: from 01.zmailcloud.com ([192.198.85.104] helo=mx-out-1.zmailcloud.com) by makus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1XKbnO-000460-U1 for pgsql-performance@postgresql.org; Thu, 21 Aug 2014 23:29:32 +0000 Received: from smtp.01.com (smtp.01.com [10.10.0.43]) by mx-out-1.zmailcloud.com (Postfix) with ESMTP id 07BB6563C66; Thu, 21 Aug 2014 18:29:30 -0500 (CDT) Received: from localhost (localhost [127.0.0.1]) by smtp-out-2.01.com (Postfix) with ESMTP id EF84C601EB; Thu, 21 Aug 2014 18:29:29 -0500 (CDT) X-Virus-Scanned: amavisd-new at smtp-out-2.01.com Received: from smtp.01.com ([127.0.0.1]) by localhost (smtp-out-2.01.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WkL6nPA3HX8z; Thu, 21 Aug 2014 18:29:29 -0500 (CDT) Received: from smtp.01.com (localhost [127.0.0.1]) by smtp-out-2.01.com (Postfix) with ESMTP id CB172601A8; Thu, 21 Aug 2014 18:29:29 -0500 (CDT) Received: from localhost (localhost [127.0.0.1]) by smtp-out-2.01.com (Postfix) with ESMTP id B4984601D0; Thu, 21 Aug 2014 18:29:29 -0500 (CDT) X-Virus-Scanned: amavisd-new at smtp-out-2.01.com Received: from smtp.01.com ([127.0.0.1]) by localhost (smtp-out-2.01.com [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id gOjVgHkaPhOt; Thu, 21 Aug 2014 18:29:29 -0500 (CDT) Received: from [172.47.23.104] (70-36-143-82.dsl.dynamic.sonic.net [70.36.143.82]) by smtp-out-2.01.com (Postfix) with ESMTPSA id 7BA5E601A8; Thu, 21 Aug 2014 18:29:28 -0500 (CDT) Message-ID: <53F680D7.6030208@agliodbs.com> Date: Thu, 21 Aug 2014 16:29:27 -0700 From: Josh Berkus Organization: PostgreSQL Experts Inc. User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Steve Crawford , Scott Marlowe CC: Bruce Momjian , "pgsql-performance@postgresql.org" , Mark Kirkwood , "Graeme B. Bell" Subject: Re: Turn off Hyperthreading! WAS: 60 core performance with 9.3 References: <53ACB190.2030206@catalyst.net.nz> <53ECFD75.3060408@agliodbs.com> <53ED371D.109@catalyst.net.nz> <53F4F36E.6050003@agliodbs.com> <20140821024036.GB26706@momjian.us> <53F65E62.3020909@agliodbs.com> <53F677E8.7010603@agliodbs.com> <53F67BD7.8030502@pinpointresearch.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -1.9 (-) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-performance Precedence: bulk Sender: pgsql-performance-owner@postgresql.org On 08/21/2014 04:08 PM, Steve Crawford wrote: > On 08/21/2014 03:51 PM, Josh Berkus wrote: >> On 08/21/2014 02:26 PM, Scott Marlowe wrote: >>> I'm running almost the exact same setup in production as a spare. It >>> has 4 of those CPUs, 256G RAM, and is currently set to use HT. Since >>> it's a spare node I might be able to do some testing on it as well. >>> It's running a 3.2 kernel right now. I could probably get a later >>> model kernel on it even. >> You know about the IO performance issues with 3.2, yes? >> > Were those 3.2 only and since fixed or are there issues persisting in > 3.2+? The 12.04 LTS release of Ubuntu Server was 3.2 but the 14.04 is 3.13. The issues I know of were fixed in 3.9. -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance