From owner-freebsd-net@FreeBSD.ORG Tue Jul 1 12:27:18 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 36F19106568F for ; Tue, 1 Jul 2008 12:27:18 +0000 (UTC) (envelope-from if@xip.at) Received: from chile.gbit.at (ns1.xip.at [193.239.188.99]) by mx1.freebsd.org (Postfix) with ESMTP id 763D98FC1B for ; Tue, 1 Jul 2008 12:27:16 +0000 (UTC) (envelope-from if@xip.at) Received: (qmail 5868 invoked from network); 1 Jul 2008 14:27:15 +0200 Received: from unknown (HELO filebunker.xip.at) (86.59.10.180) by chile.gbit.at with (DHE-RSA-AES256-SHA encrypted) SMTP; 1 Jul 2008 14:27:15 +0200 Date: Tue, 1 Jul 2008 14:27:15 +0200 (CEST) From: Ingo Flaschberger To: Paul In-Reply-To: <4869A099.5070206@gtcomm.net> Message-ID: 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> <4869A099.5070206@gtcomm.net> User-Agent: Alpine 1.10 (LFD 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-net@freebsd.org 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 12:27:18 -0000 Dear Paul, > I have been unable to even come close to livelocking the machine with the em > driver interrupt moderation. > So that to me throws polling out the window. I tried 8000hz with polling > modified to allow 10000 burst and it makes no difference higher hz-values gives you better latenca but less overall speed. 2000hz should be enough. Kind regards, Ingo Flaschberger