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Date:      Fri, 23 Jun 1995 10:50:41 +0930 (CST)
From:      Michael Smith <msmith@atrad.adelaide.edu.au>
To:        tom@uniserve.com (Tom Samplonius)
Cc:        jkh@freebsd.org, evanc@synapse.net, hackers@freefall.cdrom.com
Subject:   Re: FreeBSD as a router
Message-ID:  <199506230120.KAA27588@genesis.atrad.adelaide.edu.au>
In-Reply-To: <Pine.BSF.3.91.950622174040.4381C-100000@haven.uniserve.com> from "Tom Samplonius" at Jun 22, 95 05:42:08 pm

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Tom Samplonius stands accused of saying:
> > That said, be aware that any kind of UN*X box doesn't exactly compete
> > with a Cisco in terms of performance.  They throw raw hardware at the
> > problem whereas we have to do it the hard way, in software.
> 
>   The bottleneck certainly can't be in the CPU can it?  Where is the 
> bottleneck with PCI and a good 486 motherboard?

Latency.  The ability to receive and transmit continually on all ports.

As jordan said, router manufacturers throw _serious_ hardware at their
designs; most of them are built around special-purpose backplanes with
considerably more bandwidth than PCI.  They usually have one CPU per
interface, and a couple more running the show.

> Tom

-- 
]] Mike Smith, Software Engineer        msmith@atrad.adelaide.edu.au    [[
]] Genesis Software                     genesis@atrad.adelaide.edu.au   [[
]] High-speed data acquisition and                                      [[
]] realtime instrument control          (ph/fax) +61-8-267-3039         [[
]] My car has "demand start" - Terry Lambert                            [[



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