Date: Thu, 28 Feb 2002 18:33:50 -0500 (EST) From: The Anarcat <anarcat@anarcat.dyndns.org> To: FreeBSD-gnats-submit@freebsd.org Cc: anarcat@anarcat.dyndns.org Subject: kern/35435: rl driver generates large amount of collisions on heavy load Message-ID: <20020228233350.0B8FC20ACC@shall.anarcat.dyndns.org>
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>Number: 35435 >Category: kern >Synopsis: rl driver generates large amount of collisions on heavy load >Confidential: no >Severity: critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Feb 28 15:40:01 PST 2002 >Closed-Date: >Last-Modified: >Originator: The Anarcat >Release: FreeBSD 4.5-STABLE i386 >Organization: Nada, Inc. >Environment: System: FreeBSD shall.anarcat.dyndns.org 4.5-STABLE FreeBSD 4.5-STABLE #0: Wed Feb 6 01:37:56 EST 2002 anarcat@shall.anarcat.dyndns.org:/usr/src/sys/compile/SHALL i386 rl0: <D-Link DFE-530TX+ 10/100BaseTX> port 0x9400-0x94ff mem 0xd6800000-0xd68000ff irq 9 at device 9.0 on pci0 rl0: Ethernet address: 00:50:ba:bd:ce:41 miibus0: <MII bus> on rl0 rlphy0: <RealTek internal media interface> on miibus0 rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto >Description: I have been having intense network problems since the inclusion of this machine in my lan. FTP transfers are generating a lot of collisions. The network is 10baseT/UTP. If i use the machine as the client to upload stuff to a local server, the throughput is around 1.1Mbyte/s, but I get 700 collisions/seconds. On download, it's half that number. Note that the upload collision count is around 50 on Windows (the machine is dual-boot), and this is the primary reason why I target the driver as responsible for this behavior. I tried changing the wires, without any luck. >How-To-Repeat: I'm fairly confident that the card is responsible for this behavior. At least the driver for the card, as Windows doesn't show this behavior. So: 1- build a box with this card in it 2- connect it to another box (an ftp server) using a crosslink wire, or a hub 3- try an ftp upload or download A side effect of this problem is that when I hit 700 collisions/second, I can hang the network on the server. The server is a small machine (P166 w/ 64M ram), but I still don't get how it can freeze. All other functions are unaffected on the server. >Fix: Unknown. For the side effect, a workaround is to ifconfig down/up the faulty interface. >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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