From owner-freebsd-questions@FreeBSD.ORG Fri Aug 19 18:11:59 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3FCED16A41F for ; Fri, 19 Aug 2005 18:11:59 +0000 (GMT) (envelope-from spammesilly@gmail.com) Received: from wproxy.gmail.com (wproxy.gmail.com [64.233.184.193]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1E0D943D49 for ; Fri, 19 Aug 2005 18:11:57 +0000 (GMT) (envelope-from spammesilly@gmail.com) Received: by wproxy.gmail.com with SMTP id 69so613572wra for ; Fri, 19 Aug 2005 11:11:56 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:mime-version:content-type; b=LB+WsgXYF1T5pij9raCzbf0+XsFr7esK6i+WfshIoHAXeNmBzxARuth9KsQWJk+LJrPqbj23Emi9xjvhyUOU+m0f4IvHsTXyp94FuWQqlfjJRb0HMBEt5k/oR+yeJ1DNmEcXJAanbKSLHEslW2KSrltV1ezfRXnUJfm4AOYNHBM= Received: by 10.54.35.36 with SMTP id i36mr65475wri; Fri, 19 Aug 2005 11:11:56 -0700 (PDT) Received: by 10.54.101.6 with HTTP; Fri, 19 Aug 2005 11:11:56 -0700 (PDT) Message-ID: Date: Fri, 19 Aug 2005 14:11:56 -0400 From: Daniel Gonzalez To: freebsd-questions@freebsd.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: FXP driver.... X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Aug 2005 18:11:59 -0000 >=20 > Hi, >=20 > I've build a new P4 box (1.8Ghz, 512MB mem) based upon a ASUS P4B533VM > motherboard. This board has an Intel 845G chipset and onboard 10/100 > mbit/s LAN (fxp driver). >=20 > When connected directly to a gateway (in my case an Extreme BD10k) I > observe the following behaviour: a ping to the gateway starts around > 1ms and slowly increases in steps of .1 or .2ms to around 10ms. Then > it suddenly drops back to 1ms and the process starts all over again. >=20 > I've tried a different NIC (3com, xl driver), new cabling, new > switchport and all gives me the same result. My other labbox (a AMD > 2000 XP+ with 3com PCI nic) connected to the same router is showing > normal latency. This gives me the feeling it's some sort of timing > issue on the P4's motherboard itself. >=20 > Has anyone seen this before? I've searched the archives and found > little on this topic. Any tips/hints where I can seach for further > clues? >=20 > Thanks, >=20 > Arjan >=20 I haven't used the fxp driver in a while but you can check out the man page= =20 for the driver (man 4 fxp) and it mentions that you can disable autoselect= =20 for media type and speed. I remember reading in an article (I can't locate= =20 the URL) that the autonegotiation between the NIC and switch/router can be = a=20 bottleneck. That would be the easiset thing to check/eliminate. Hope that= =20 helps. --=20 Dan Gonzalez spammesilly@gmail.com IM: signulth