From owner-freebsd-hardware  Tue Aug  3 11: 2:20 1999
Delivered-To: freebsd-hardware@freebsd.org
Received: from dead-end.net (dead-end.net [216.15.131.2])
	by hub.freebsd.org (Postfix) with ESMTP
	id 1F1BC14D36; Tue,  3 Aug 1999 11:02:10 -0700 (PDT)
	(envelope-from rock@dead-end.net)
Received: from dead-end.net (p3E9C37CB.dip.t-dialin.net [62.156.55.203])
	by dead-end.net (8.9.3/DEAD-END/1999022000) with ESMTP id UAA79265;
	Tue, 3 Aug 1999 20:01:09 +0200 (CEST)
	(envelope-from rock@dead-end.net)
Message-ID: <37A72E77.509A7485@dead-end.net>
Date: Tue, 03 Aug 1999 20:01:27 +0200
From: "D. Rock" <rock@dead-end.net>
X-Mailer: Mozilla 4.6 [de] (Win98; U)
X-Accept-Language: de
MIME-Version: 1.0
To: "Andrej Brodnik (Andy)" <Andrej.Brodnik@IBC.IskraSistemi.Si>
Cc: freebsd-hardware@FreeBSD.ORG, hackers@FreeBSD.ORG
Subject: Re: Overloading my machine?
References: <199908031333.PAA24137@Dolinca.IBC.IskraSistemi.Si>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-hardware@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org

"Andrej Brodnik (Andy)" schrieb:
> Hi there,
> 
> I want to put on my machine the following HW (I'll be running
> FBSD-3.2) beside the usual HW (serial and parallel ports etc.):
> 
>   - three IDE disks
>   - floppy
>   - IDE CD-ROM
>   - three ep NIC
>   - Adaptec PCI bus SCSI adapter
> 
> Now, this is not a lot of  burden (I think) for the processor, but I'm
> a bit  afraid about the  architecture. Will this work?  In particular,
> I'm  worried about the  interrupts. Any  suggestions how  to configure
> them?
The ISA NIC's would made me worry.
An ISA Ethernet NIC with a rate of ~ 1 MB/s utilizes the CPU up to
50-70%
(regardless of the CPU speed). On practictal tests the ISA bus maxes out
at around 3MB/s at 100 % CPU load (unless the ISA device does DMA)

For more than average network traffic, I'd put some cheap PCI NICs in.
You
should have at least 2 PCI slots free. Unless you are using this machine
also as a workstation, you could throw out the PCI VGA adapter and just
use a plain old ISA one, so you will gain another PCI slot.

Daniel


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hardware" in the body of the message