Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1XKbqX-0008Qk-P6 for pgsql-performance@arkaria.postgresql.org; Thu, 21 Aug 2014 23:32:45 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1XKbqX-00083A-9g for pgsql-performance@arkaria.postgresql.org; Thu, 21 Aug 2014 23:32:45 +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 1XKbqW-000834-ES for pgsql-performance@postgresql.org; Thu, 21 Aug 2014 23:32:44 +0000 Received: from mail.catalyst.net.nz ([2404:130:0:10::40:0]) by makus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1XKbqS-0004Be-7l for pgsql-performance@postgresql.org; Thu, 21 Aug 2014 23:32:42 +0000 Received: from localhost (localhost [127.0.0.1]) by mail.catalyst.net.nz (Postfix) with ESMTP id 36128325F2; Fri, 22 Aug 2014 11:32:35 +1200 (NZST) X-Virus-Scanned: Debian amavisd-new at catalyst.net.nz Received: from mail.catalyst.net.nz ([127.0.0.1]) by localhost (bertrand.catalyst.net.nz [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qGlPhHkyNYsw; Fri, 22 Aug 2014 11:32:34 +1200 (NZST) Received: from [IPv6:2404:130:0:1000:a4ba:e2ae:2a36:c95] (unknown [IPv6:2404:130:0:1000:a4ba:e2ae:2a36:c95]) (Authenticated sender: mark.kirkwood) by mail.catalyst.net.nz (Postfix) with ESMTPSA id 6B75031DAD; Fri, 22 Aug 2014 11:32:34 +1200 (NZST) Message-ID: <53F68192.3060300@catalyst.net.nz> Date: Fri, 22 Aug 2014 11:32:34 +1200 From: Mark Kirkwood 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" , "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-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 22/08/14 11:29, 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. > There is a 3.11 kernel series for Ubuntu 12.04 Precise. Regards Mark -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance