From owner-freebsd-net@FreeBSD.ORG Fri Feb 8 01:33:10 2008 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3077116A46B for ; Fri, 8 Feb 2008 01:33:10 +0000 (UTC) (envelope-from daniel@dgnetwork.com.br) Received: from mail.mastercabo.com.br (mail.mastercabo.com.br [200.179.179.14]) by mx1.freebsd.org (Postfix) with SMTP id AA9E613C4D1 for ; Fri, 8 Feb 2008 01:33:07 +0000 (UTC) (envelope-from daniel@dgnetwork.com.br) Received: (qmail 77509 invoked by uid 1008); 8 Feb 2008 01:06:26 -0000 X-Spam-Checker-Version: SpamAssassin 3.1.6-unknown (2006-10-03) on srvmail1 X-Spam-Level: X-Spam-Status: No, score=-1.5 required=4.7 tests=AWL,BAYES_00 autolearn=ham version=3.1.6-unknown Received: from unknown (HELO ?10.0.1.10?) (daniel@dgnetwork.com.br@200.243.216.68) by mail.mastercabo.com.br with SMTP; 8 Feb 2008 01:06:21 -0000 Message-ID: <47ABA96E.4020800@dgnetwork.com.br> Date: Thu, 07 Feb 2008 22:59:26 -0200 From: =?ISO-8859-1?Q?Daniel_Dias_Gon=E7alves?= Organization: DGNET Network Solutions User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) MIME-Version: 1.0 To: freebsd-net@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: DEVICE_POLLING IF_EM CPU usage X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: daniel@dgnetwork.com.br List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 Feb 2008 01:33:10 -0000 Hi, I activated polling in 8 interfaces em0... em7 (ifconfig em* polling) to carry through performance tests, when activating, it had a significant reduction of CPU usage, load average measured of "0,50, 0,69, 0,52" for "0,43, 0,39, 0,21" and the CPU usage (SNMP Graphic) measured of 35% for 5%. Passed some hours I disactivated polling (ifconfig em* - polling) and CPU usage continues low. Somebody could explain this to me? Some information: FreeBSD 6.3-RELEASE CPU: Intel(R) Xeon(TM) CPU 3.20GHz (3200.13-MHz 686-class CPU) Logical CPUs per core: 2 FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs SMP: AP CPU #1 Launched! Interfaces if_em: vendor = 'Intel Corporation' device = '82546EB Dual Port Gigabit Ethernet Controller' Thanks. Daniel