Date: Wed, 22 Dec 1999 08:03:50 +0100 From: Koos de Haan <sdehaan@caiw.nl> To: Vinod Balakrishnan <vkb3q@cs.virginia.edu>, freebsd-stable@FreeBSD.ORG Subject: Re: de driver problems with ZNYX 21140A cards Message-ID: <v03130301b486274d8fc8@192.168.8.115> In-Reply-To: <Pine.GSO.4.05.9912212053120.20815-100000@cobra.cs.Virginia.EDU>
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Hi, We also use the same ZNYX cards in some boxes and experiencing the same problems. (I didn't get any TCP througput above approx 40 Mbit/s ever.) NetBSD which is using the same driver also is suffering from the same problem. Under Linux the cards work fine, but thats another driver. I think it is some bug in the de driver which causes these problems. I will get the driver form ZNYX a try on my 3.4-STABLE system to see wat will happen. Regards, Koos de Haan Op 03:02 +0100 22-12-1999, Vinod Balakrishnan schreef: > hi, > > I am working on a 6 pc test bed (FreeBSD boxes) having the > 4 port 100Mbps 21140A Znyx cards. > > I am running FreeBSD 3.1-Release. I have also tested it on FreeBSD > 3.0-Stable. > > I am facing a few problems with the device driver de. > > 1. netstat -I <interface> gives lots of output errors. > Name Mtu Network Address Ipkts Ierrs Opkts Oerrs > Coll > de3 1500 10.0.8/24 10.0.8.5 434417 0 290242 289158 > 0 > > If I use the device driver provided at the ZNYX website (znyx.com) zxe > then I do not see any Oerrs. > > 2. ifconfig de3 mediaopt full-duplex , returns an error: > ifconfig:SIOCSIFMEDIA: Device not configured > > 3. The throughput of a TCP flow from one FreeBSD box to another (each > having a ZNYX card) varies with the packet size. > For instance for a packet size of 150bytes I achieve 90Mbps. > For packetsize of 500bytes it is only 60-70Mbps. > > 4. If I run a tcp flow from one FreeBSD box to another via an intermediate > FreeBSD box (all having the ZNYX344 card and de device driver) I get a > throughput of 40Mbps only for 500 byte packets. > > > All of these above problems are not visible when I use the zxe > device driver. > > thank you for your time, > > -Vinod > > > *********************************************************************** > B. Vinod Kumar > Dept. of Computer Science, > University of Virginia, Charlottesville > Residence: > 101, Carrollton Terrace, #2 > Charlottesville, Va-22903 > 804-293-5101 > > ********************************************************************** > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-stable" in the body of the message - -- Kabelfoon BV Industriestraat 30, Postbus 45, 2670 AA NAALDWIJK e-mail info@kabelfoon.nl voor informatie, kabelfoon@kabelfoon.nl voor abonnementszaken, help@kabelfoon.nl voor de helpdesk Homepage : http://www.kabelfoon.nl/ Zie http://www.kabelfoon.nl/pgp/ voor Kabelfoon public keys To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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