Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1ZHNmG-0003yR-S2 for pgsql-performance@arkaria.postgresql.org; Tue, 21 Jul 2015 02:59:32 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84) (envelope-from ) id 1ZHNmG-0006iG-9K for pgsql-performance@arkaria.postgresql.org; Tue, 21 Jul 2015 02:59:32 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84) (envelope-from ) id 1ZHNmE-0006i7-Mz for pgsql-performance@postgresql.org; Tue, 21 Jul 2015 02:59:30 +0000 Received: from mail.audifarma.com.co ([190.14.237.212] helo=audifarm.audifarma.com.co) by makus.postgresql.org with esmtp (Exim 4.84) (envelope-from ) id 1ZHNmA-0004aA-T5 for pgsql-performance@postgresql.org; Tue, 21 Jul 2015 02:59:28 +0000 Received: from [10.1.1.81] (unknown [10.1.1.81]) by audifarm.audifarma.com.co (Postfix) with ESMTP id 5A3F51C36F4 for ; Mon, 20 Jul 2015 21:59:20 -0500 (COT) To: pgsql-performance@postgresql.org From: Jeison Bedoya Delgado Subject: hyperthreadin low performance Organization: Audifarma S.A. Message-ID: <55ADB586.2010406@audifarma.com.co> Date: Mon, 20 Jul 2015 21:59:18 -0500 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -3.1 (---) 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 hi everyone, Recently update a database to machine with RHEL7, but i see that the performance is betther if the hyperthreading tecnology is deactivated and use only 32 cores. is normal that the machine performance is better with 32 cores that 64 cores?. BD: postgresql 9.3.5 Machine: Dell PE R820 processor: 4x Intel(R) Xeon(R) CPU E5-4620 v2 @ 2.60GHz eigth-core RAM: 128GB Storage SSD SAN thanks by your help -- Atentamente, JEISON BEDOYA DELGADO ADM.Servidores y comunicaciones AUDIFARMA S.A. -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance