From owner-freebsd-net@FreeBSD.ORG Tue Jul 1 03:02:46 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 7BC881065673 for ; Tue, 1 Jul 2008 03:02:46 +0000 (UTC) (envelope-from wilkinsa@obelix.dsto.defence.gov.au) Received: from digger1.defence.gov.au (digger1.defence.gov.au [203.5.217.4]) by mx1.freebsd.org (Postfix) with ESMTP id EA5608FC2E for ; Tue, 1 Jul 2008 03:02:45 +0000 (UTC) (envelope-from wilkinsa@obelix.dsto.defence.gov.au) Received: from ednmsw510.dsto.defence.gov.au (ednmsw510.dsto.defence.gov.au [131.185.68.11]) by digger1.defence.gov.au (DSTO/DSTO) with ESMTP id m6132DcZ021396 for ; Tue, 1 Jul 2008 12:32:13 +0930 (CST) Received: from fmbex510.dsto.defence.gov.au (fmbex510.dsto.defence.gov.au) by ednmsw510.dsto.defence.gov.au (Clearswift SMTPRS 5.2.9) with ESMTP id for ; Tue, 1 Jul 2008 12:32:44 +0930 Received: from stlex510.dsto.defence.gov.au ([203.6.60.184]) by fmbex510.dsto.defence.gov.au with Microsoft SMTPSVC(6.0.3790.1830); Tue, 1 Jul 2008 13:02:43 +1000 Received: from obelix.dsto.defence.gov.au ([203.6.60.208]) by stlex510.dsto.defence.gov.au with Microsoft SMTPSVC(6.0.3790.1830); Tue, 1 Jul 2008 11:02:43 +0800 Received: from obelix.dsto.defence.gov.au (localhost [127.0.0.1]) by obelix.dsto.defence.gov.au (8.14.2/8.14.2) with ESMTP id m6132Goi008366 for ; Tue, 1 Jul 2008 11:02:16 +0800 (WST) (envelope-from wilkinsa@obelix.dsto.defence.gov.au) Received: (from wilkinsa@localhost) by obelix.dsto.defence.gov.au (8.14.2/8.14.2/Submit) id m6132G2P008365 for freebsd-net@freebsd.org; Tue, 1 Jul 2008 11:02:16 +0800 (WST) (envelope-from wilkinsa) Date: Tue, 1 Jul 2008 11:02:16 +0800 From: "Wilkinson, Alex" To: freebsd-net@freebsd.org Message-ID: <20080701030216.GP3898@stlux503.dsto.defence.gov.au> Mail-Followup-To: freebsd-net@freebsd.org References: <4867420D.7090406@gtcomm.net> <200806301944.m5UJifJD081781@lava.sentex.ca> <20080701004346.GA3898@stlux503.dsto.defence.gov.au> <20080701010716.GF3898@stlux503.dsto.defence.gov.au> <486986D9.3000607@monkeybrains.net> <48699960.9070100@gtcomm.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <48699960.9070100@gtcomm.net> Organisation: Defence Science Technology Organisation User-Agent: Mutt/1.5.18 (2008-05-17) X-OriginalArrivalTime: 01 Jul 2008 03:02:43.0217 (UTC) FILETIME=[EE3B6810:01C8DB26] X-TM-AS-Product-Ver: SMEX-7.0.0.1526-5.5.1027-16002.007 X-TM-AS-Result: No--0.740000-0.000000-31 Content-Transfer-Encoding: 7bit Subject: Re: Freebsd IP Forwarding performance (question, and some info) [7-stable, current, em, smp] X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Jul 2008 03:02:46 -0000 0n Mon, Jun 30, 2008 at 10:41:36PM -0400, Paul wrote: >All the NIC drivers in 7 pretty much use interrupt moderation so it can >never lock the machine anyway.. This effectively kills polling and it >really no longer has any use except to be able to have a fraction of the >cpu set aside for user space but you can do that anyway with SMP what is "interrupt moderation" ? -aW IMPORTANT: This email remains the property of the Australian Defence Organisation and is subject to the jurisdiction of section 70 of the CRIMES ACT 1914. If you have received this email in error, you are requested to contact the sender and delete the email.