From owner-freebsd-net Thu Nov 9 9:38:40 2000 Delivered-To: freebsd-net@freebsd.org Received: from aifhs8.alcatel.fr (aifhs8.alcatel.fr [212.208.74.153]) by hub.freebsd.org (Postfix) with ESMTP id 04A6F37B479 for ; Thu, 9 Nov 2000 09:38:36 -0800 (PST) Received: from frmta003.netfr.alcatel.fr (frmta003.netfr.alcatel.fr [155.132.251.32]) by aifhs8.alcatel.fr (ALCANET/SMTP2) with SMTP id SAA07801 for ; Thu, 9 Nov 2000 18:38:30 +0100 (MET) Received: by frmta003.netfr.alcatel.fr(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id C1256992.0060DD45 ; Thu, 9 Nov 2000 18:38:01 +0100 X-Lotus-FromDomain: ALCATEL From: Thierry.Herbelot@alcatel.fr To: net@freebsd.org Message-ID: Date: Thu, 9 Nov 2000 18:30:56 +0100 Subject: 16 NICs on a Compaq PC ? Mime-Version: 1.0 Content-type: text/plain; charset=us-ascii Content-Disposition: inline Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hello, I'm trying to build a low-cost Ethernet router with a Compaq Deskpro EP-6450 and 4 4-port NIC from DLINK (DFE-570-TX model) I'm using the dc driver for a 4.1.1-Release. the performance is very disappointing (the throughput is on the order of 200 kpbs for a direct 100Mbps ful-duplex Ethernet link) I've got messages "dc0 : TX underrun -- increasing TX threshold" (lots of them ..) I've also seen that all dc ports get mapped to the same irq (nr 11), and when I try to change this setting, the machine stops booting (I have to try with WinNT) 1st Q : is there a performance hit with all ports tied to the single irq11 ? (my gut feeling would be "of course", I'd like to be sure) 2nd Q : has someone built a similar configuration ? 3rd Q : do I need to dump all the Compaqs to buy other, more standard machines ? TfH PS1 : PS2 : sinppet of the dmesg : .... dc0: port 0x4000-0x407f mem 0x40c00000-0x40c003ff irq 11 at device 4.0 on pci2 dc0: Ethernet address: 00:80:c8:f8:4c:4d miibus0: on dc0 ukphy0: on miibus0 ukphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto dc1: port00x4080-0x40ff mem 0x40d00000-0x40d003ff irq 11 at device 5.0 on pci2 dc1: Ethernet address: 00:80:c8:f8:4c:4e mii\M-bus1: on dc1 ukphy1: on miibus1 ukphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto dc2: port 0x4400-0x447f mem 0x40e00000-0x40e003ff irq 11 at device 6.0 on pci2 dc2: Ethernet address: 00:80:c8:f8:4c:4f miibus2: on dc2 ukphy2: on miibus2 ukphy2: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto dc3: port 0x4480-0x44ff mem 0x40f00000-0x40f003ff irq .... To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message