From owner-freebsd-net Fri Oct 18 11:48:16 2002 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 CDEB837B401; Fri, 18 Oct 2002 11:48:14 -0700 (PDT) Received: from pimout1-ext.prodigy.net (pimout1-ext.prodigy.net [207.115.63.77]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2072E43EA3; Fri, 18 Oct 2002 11:48:14 -0700 (PDT) (envelope-from kbyanc@posi.net) Received: from gateway.posi.net (adsl-63-201-92-224.dsl.snfc21.pacbell.net [63.201.92.224]) by pimout1-ext.prodigy.net (8.12.3 da nor stuldap/8.12.3) with ESMTP id g9IImCLE599274; Fri, 18 Oct 2002 14:48:13 -0400 Received: from localhost (localhost [127.0.0.1]) by gateway.posi.net (8.12.6/8.12.5) with ESMTP id g9IImBOQ001782; Fri, 18 Oct 2002 11:48:11 -0700 (PDT) (envelope-from kbyanc@posi.net) Date: Fri, 18 Oct 2002 11:48:11 -0700 (PDT) From: Kelly Yancey To: Prafulla Deuskar Cc: Luigi Rizzo , Petri Helenius , Lars Eggert , Subject: Re: ENOBUFS In-Reply-To: <20021018111147.A91108@hub.freebsd.org> Message-ID: <20021018113427.Y1611-100000@gateway.posi.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Fri, 18 Oct 2002, Prafulla Deuskar wrote: > FYI. 82543 doesn't support PCI-X protocol. > For PCI-X support use 82544, 82545 or 82546 based cards. > > -Prafulla > That is alright, we aren't expecting PCI-X speeds. It is just that our only PCI slot on the motherboard (1U rack-mount system) is a PCI-X slot. Shouldn't the 82543 still function normally but only as at PCI speeds? Thanks, Kelly > > Kelly Yancey [kbyanc@posi.net] wrote: > > On Fri, 18 Oct 2002, Luigi Rizzo wrote: > > > > > On Fri, Oct 18, 2002 at 10:27:04AM -0700, Kelly Yancey wrote: > > > ... > > > > Hmm. Might that explain the abysmal performance of the em driver with > > > > packets smaller than 333 bytes? > > > > > > what do you mean ? it works great for me. even on -current i > > > can push out over 400kpps (64byte frames) on a 2.4GHz box. > > > > > > luigi > > > > > > > Using a SmartBit to push traffic across a 1.8Ghz P4; 82543 chipset card > > plugged into PCI-X bus: > > > > FrameSize TxFrames RxFrames LostFrames Lost (%) > > 330 249984 129518 120466 48.19 > > 331 249144 127726 121418 48.73 > > 332 248472 140817 107655 43.33 > > 333 247800 247800 0 0 > > > > It has no trouble handling frames 333 bytes or larger. But for any frame > > 332 bytes or smaller we consistently see ~50% packet loss. This same machine > > easily pushes ~100Mps with the very same frame sizes using a bge card rather > > than em. > > > > I've gotten the same results with both em driver version 1.3.14 and 1.3.15 > > on both FreeBSD 4.5 and 4.7 (all 4 combinations, that is). > > > > Kelly > > > > -- > > Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org} > > FreeBSD, The Power To Serve: http://www.freebsd.org/ > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-net" in the body of the message > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message > -- Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org} "No nation is permitted to live in ignorance with impunity." -- Thomas Jefferson, 1821. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message