From owner-freebsd-questions Fri Apr 16 14:22: 3 1999 Delivered-To: freebsd-questions@freebsd.org Received: from mailgw00.execpc.com (mailgw00.execpc.com [169.207.1.78]) by hub.freebsd.org (Postfix) with ESMTP id 5C915153C2 for ; Fri, 16 Apr 1999 14:21:59 -0700 (PDT) (envelope-from bellefso@execpc.com) Received: from pop03.execpc.com (pop03.execpc.com [169.207.1.82]) by mailgw00.execpc.com (8.9.1) id QAA03510; Fri, 16 Apr 1999 16:19:35 -0500 Received: from packfan (pern-2-103.mdm.mkt.execpc.com [169.207.89.231]) by pop03.execpc.com (8.8.8) id QAA21133; Fri, 16 Apr 1999 16:19:34 -0500 From: "Brian's Mail" To: "Jaye Mathisen" Cc: "FreeBSD Questions" Subject: RE: 2 or 4 port Ethernet cards Date: Fri, 16 Apr 1999 16:23:54 -0500 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2212 (4.71.2419.0) In-Reply-To: Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.0810.800 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG What I meant by 4 seperate cards is 4 single port 100 MB ethernet or one 4 port ethernet card. And as stated by Vallo Kallaste you do have disk IO on the same bus. This would in theory cut the available bandwidth in half. Assuming that there is no other use of the system other than transfering from disk to network. Brian -----Original Message----- From: owner-freebsd-questions@FreeBSD.ORG [mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Jaye Mathisen Sent: Thursday, April 15, 1999 10:31 PM To: Brian's Mail Cc: FreeBSD Questions Subject: RE: 2 or 4 port Ethernet cards THere seems to be a math problem here. 132MB/sec appx = 1320Mb/sec, so conceivably, 13 100mbit cards... On Wed, 14 Apr 1999, Brian's Mail wrote: > The PCI Bus can do 132 MB/sec so in theory the bus can handle 4 100Mb ports. > This would be roughly 50 MB/sec. So it shouldn't matter if there are 4 > seperate cards or a card with four ports, whether or not the card can > sustain that output is the important thing. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message