Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1XKcLg-0001Ng-5E for pgsql-performance@arkaria.postgresql.org; Fri, 22 Aug 2014 00:04:56 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1XKcLf-0005zA-Bs for pgsql-performance@arkaria.postgresql.org; Fri, 22 Aug 2014 00:04:55 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1XKcLe-0005z3-6y for pgsql-performance@postgresql.org; Fri, 22 Aug 2014 00:04:54 +0000 Received: from lists.commandprompt.com ([69.168.55.30]) by magus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1XKcLY-0002av-5x for pgsql-performance@postgresql.org; Fri, 22 Aug 2014 00:04:52 +0000 Received: from [192.168.1.2] (spinlock.commandprompt.com [69.168.55.30]) by lists.commandprompt.com (Postfix) with ESMTPA id DB2EF328; Thu, 21 Aug 2014 17:04:44 -0700 (PDT) Received: from [192.168.1.2] ([67.168.169.165] helo=[192.168.1.2]) by assp.commandprompt.com with ESMTPS(AES128-SHA) (2.1.1); 21 Aug 2014 17:04:44 -0700 Message-ID: <53F6891C.9070106@commandprompt.com> Date: Thu, 21 Aug 2014 17:04:44 -0700 From: "Joshua D. Drake" Organization: Command Prompt, Inc. User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.0 MIME-Version: 1.0 To: Josh Berkus , 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> <53F680D7.6030208@agliodbs.com> In-Reply-To: <53F680D7.6030208@agliodbs.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Assp-Version: 2.1.1(11364) on assp.commandprompt.com X-Assp-Client-SSL: yes X-Assp-ID: assp.commandprompt.com m1-65884-05186 X-Assp-Envelope-From: jd@commandprompt.com X-Assp-Intended-For: grb@skogoglandskap.no X-Assp-Original-Subject: Re: [PERFORM] Turn off Hyperthreading! WAS: 60 core performance with9.3 X-Pg-Spam-Score: -2.6 (--) 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 04:29 PM, Josh Berkus wrote: > > 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. > Correct. If you run trusty backports you are good to go. JD -- Command Prompt, Inc. - http://www.commandprompt.com/ 503-667-4564 PostgreSQL Support, Training, Professional Services and Development High Availability, Oracle Conversion, @cmdpromptinc "If we send our children to Caesar for their education, we should not be surprised when they come back as Romans." -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance