From owner-freebsd-hackers Sun Mar 21 12: 3:52 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [209.157.86.2]) by hub.freebsd.org (Postfix) with ESMTP id 0ACFE152BB for ; Sun, 21 Mar 1999 12:03:50 -0800 (PST) (envelope-from dillon@apollo.backplane.com) Received: (from dillon@localhost) by apollo.backplane.com (8.9.3/8.9.1) id MAA14516; Sun, 21 Mar 1999 12:03:31 -0800 (PST) (envelope-from dillon) Date: Sun, 21 Mar 1999 12:03:31 -0800 (PST) From: Matthew Dillon Message-Id: <199903212003.MAA14516@apollo.backplane.com> To: Amancio Hasty Cc: Terry Lambert , Dag-Erling Smorgrav , andreas@klemm.gtn.com, rsnow@lgc.com, ckempf@enigami.com, wpaul@skynet.ctr.columbia.edu, freebsd-hackers@FreeBSD.ORG Subject: Re: Gigabit ethernet -- what am I doing wrong? References: <199903212000.MAA50283@rah.star-gate.com> Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG :Does anyone know of a faster PCI chipset implementation for PCs? Lets say :schedule :to be deploy in the next 6 months... : : Tnks, : Amancio Most of these chips already pretty much saturate the PCI bus's available bandwidth. You aren't going to get a significant improvement unless you go to a double-speed or double-wide PCI bus. Double-wide ( 64 bits ) is a standard and, in fact, the Gigabit chipset we've been discussing appears to be able to deal with 64 bit wide PCI busses. However, the PCI bus supplied with most PC's is a 32 bit wide bus, so you are limited to an absolute best case 130 MBytes/sec or so worth of bandwidth. -Matt Matthew Dillon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message