From owner-freebsd-stable@FreeBSD.ORG Wed Nov 29 21:07:11 2006 Return-Path: X-Original-To: FreeBSD-stable@freebsd.org Delivered-To: FreeBSD-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id E431216A55B for ; Wed, 29 Nov 2006 21:07:10 +0000 (UTC) (envelope-from Kirk.Davis@epsb.ca) Received: from Exchange22.EDU.epsb.ca (exchange22.epsb.ca [198.161.119.187]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7012B43CA5 for ; Wed, 29 Nov 2006 21:06:56 +0000 (GMT) (envelope-from Kirk.Davis@epsb.ca) Received: from Exchange21.EDU.epsb.ca ([10.0.5.118]) by Exchange22.EDU.epsb.ca with Microsoft SMTPSVC(6.0.3790.1830); Wed, 29 Nov 2006 14:06:59 -0700 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Date: Wed, 29 Nov 2006 14:06:58 -0700 Message-ID: <04C71268DFDAA8499EC1A248A44B6A2B0855B0B6@Exchange21.EDU.epsb.ca> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Broadcom BCE interface and polling (Dell 2950) Thread-Index: AccTzMQEfFf860tnR5OWA8IyHsHgSQALWQBg From: "Kirk Davis" To: X-OriginalArrivalTime: 29 Nov 2006 21:06:59.0633 (UTC) FILETIME=[4F49B210:01C713FA] Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: Subject: Broadcom BCE interface and polling (Dell 2950) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Nov 2006 21:07:11 -0000 > Hi, > We have just upgraded to a Dell 2950 for our main BGP router. > With the constant rise in traffic through the box, I have started to > notice some dropped packets so I figured I would take a look at > putting the interfaces into polling more to squeeze a little more > packets through them. >=20 > I have added the DEVICE_POLLING and HZ=3D1000 to the kernel. I > turned on polling for the bce interfaces and they pass traffic at low > volumes (like ping tests). If I put my fluke traffic generators on > either side of the box and try to ramp it up to even 100Mb (they are > Gig links) then the interfaces will stop responding. Turning off > polling will get them to respond again. >=20 > I know that the bce support in still quite new. Has anyone else > testing with polling and the bce interfaces? Is there any more > information that I can get for the developers to help track this down. > The system is not in production right now so I can use it for testing. >=20 > As another note... I added some Intel (em) cards into the box > and tested with them. Polling worked great on them but I was only > able to get about 200k packets per second before it starts dropping > packets. Is this about what I should expect? >=20 > [root@ ~]# uname -a > FreeBSD 6.2-RC1 FreeBSD 6.2-RC1 #2: Tue Nov 28 18:10:56 MST 2006 > root@:/usr/obj/usr/src/sys/INET-GW i386 >=20 > ---- Kirk >=20 >=20