From owner-freebsd-net@FreeBSD.ORG Sun May 18 12:21:05 2003 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 798A137B401 for ; Sun, 18 May 2003 12:21:05 -0700 (PDT) Received: from smtp1.sentex.ca (smtp1.sentex.ca [199.212.134.4]) by mx1.FreeBSD.org (Postfix) with ESMTP id CEE2843F93 for ; Sun, 18 May 2003 12:21:04 -0700 (PDT) (envelope-from mike@sentex.net) Received: from house.sentex.net (cage.simianscience.com [64.7.134.1]) by smtp1.sentex.ca (8.12.9/8.12.9) with ESMTP id h4IJL14N095717; Sun, 18 May 2003 15:21:02 -0400 (EDT) (envelope-from mike@sentex.net) Message-Id: <5.2.0.9.0.20030518151605.05455ec8@192.168.0.12> X-Sender: mdtancsa@192.168.0.12 X-Mailer: QUALCOMM Windows Eudora Version 5.2.0.9 Date: Sun, 18 May 2003 15:21:08 -0400 To: Tony Sarendal From: Mike Tancsa In-Reply-To: <3EC76521.2010000@polarcap.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed cc: freebsd-net@freebsd.org Subject: Re: polling(4) and Gigabit X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 May 2003 19:21:05 -0000 At 12:49 PM 5/18/2003 +0200, Tony Sarendal wrote: >Mike Tancsa wrote: >>The em driver has polling support in STABLE (post 4.8R). The limitation is >>not so much the NIC, but the way the NIC is serviced via interrupts in non >>polling modes. There are some very good discussions posted already you can >>get via Google on what you can and cant do and what you might expect >>performance wise. > >OK, I checked the code in 4.8-RELEASE and only found polling in nge. Its in *after* 4.8 Release. See http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/em/if_em.c?only_with_tag=RELENG_4 on April 4th. ---Mike -------------------------------------------------------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet since 1994 www.sentex.net Cambridge, Ontario Canada www.sentex.net/mike