Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1XKbSn-0007LW-6F for pgsql-performance@arkaria.postgresql.org; Thu, 21 Aug 2014 23:08:13 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1XKbSm-0004Se-GO for pgsql-performance@arkaria.postgresql.org; Thu, 21 Aug 2014 23:08:12 +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 1XKbSl-0004SW-KI for pgsql-performance@postgresql.org; Thu, 21 Aug 2014 23:08:11 +0000 Received: from cerberus.pinpointresearch.com ([66.7.238.130] helo=polaris.pinpointresearch.com) by makus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1XKbSi-0003gW-O9 for pgsql-performance@postgresql.org; Thu, 21 Aug 2014 23:08:09 +0000 Received: from [192.168.1.179] (betelgeuse.pinpointresearch.com [192.168.1.179]) by polaris.pinpointresearch.com (Postfix) with ESMTP id AA3D2E00EC82; Thu, 21 Aug 2014 16:08:07 -0700 (PDT) Message-ID: <53F67BD7.8030502@pinpointresearch.com> Date: Thu, 21 Aug 2014 16:08:07 -0700 From: Steve Crawford User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.0 MIME-Version: 1.0 To: Josh Berkus , 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> In-Reply-To: <53F677E8.7010603@agliodbs.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit 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 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. Cheers, Steve -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance