From owner-freebsd-stable Wed Mar 21 11:55:11 2001 Delivered-To: freebsd-stable@freebsd.org Received: from gw-nl1.origin-it.com (gw-nl1.origin-it.com [193.79.128.34]) by hub.freebsd.org (Postfix) with ESMTP id CE50F37B71B for ; Wed, 21 Mar 2001 11:55:06 -0800 (PST) (envelope-from Helge.Oldach@de.origin-it.com) Received: from mail.de.origin-it.com (localhost.origin-it.com [127.0.0.1]) by gw-nl1.origin-it.com with ESMTP id UAA03768; Wed, 21 Mar 2001 20:55:05 +0100 (MET) (envelope-from Helge.Oldach@de.origin-it.com) Received: from smtprelay-de1.origin-it.com(172.16.188.53) by gw-nl1.origin-it.com via mwrap (4.0a) id xma003766; Wed, 21 Mar 01 20:55:05 +0100 Received: from mailhub.de.origin-it.com (mailhub.de.origin-it.com [172.16.189.20]) by mail.de.origin-it.com (8.9.3/8.8.5-1.2.2m-19990317) with ESMTP id UAA06031; Wed, 21 Mar 2001 20:55:04 +0100 (MET) Received: from galaxy.de.cp.philips.com (galaxy.de.cp.philips.com [130.143.166.29]) by mailhub.de.origin-it.com (8.11.2/8.11.2/hmo23oct00) with ESMTP id f2LJt3Z86499; Wed, 21 Mar 2001 20:55:03 +0100 (CET) (envelope-from Helge.Oldach@de.origin-it.com) Received: (from hmo@localhost) by galaxy.de.cp.philips.com (8.9.3/8.9.3/hmo14aug98) id UAA03416; Wed, 21 Mar 2001 20:55:02 +0100 (MET) Message-Id: <200103211955.UAA03416@galaxy.de.cp.philips.com> Subject: Re: NFS performance In-Reply-To: from Jan Conrad at "Mar 21, 2001 6:33:43 pm" To: conrad@th.physik.uni-bonn.de (Jan Conrad) Date: Wed, 21 Mar 2001 20:55:02 +0100 (MET) Cc: bright@wintelcom.net, dillon@earth.backplane.com, gordont@bluemtn.net, rdm@cfcl.com, freebsd-stable@FreeBSD.ORG From: Helge Oldach X-Address: Atos Origin GmbH, Billstrasse 80, D-20539 Hamburg, Germany X-Phone: +49 40 7886 464, Fax: +49 40 7886 235, Mobile: +49 160 4782517 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Jan Conrad: >client: >Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll >fxp0 1500 00:02:b3:1f:f8:c5 1901001 0 771611 0 208240 >server: >Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll >fxp0 1500 00:90:27:1c:f3:79 7157753 0 4648694 0 2661459 Gimme a break. Out of 4648694 output packets you see as many as 2661459 collisions? That's more than 50%, i.e. for about every second packet that you are sending you get a collision! You very clearly have a collision problem. I bet that the switch is at full-duplex while you're at half. Try changing the mediaopt setting of your NIC. Helge To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message