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Date:      Sun, 2 Sep 2001 14:19:32 +0100 (BST)
From:      Joshua Goodall <joshua@roughtrade.net>
To:        Deepak Jain <deepak@ai.net>
Cc:        "freebsd-hackers@FreeBSD. ORG" <freebsd-hackers@FreeBSD.ORG>
Subject:   Re: Routing Performance?
Message-ID:  <Pine.LNX.4.33.0109021407520.20276-100000@elm.phenome.org>
In-Reply-To: <GPEOJKGHAMKFIOMAGMDIIEPJFEAA.deepak@ai.net>

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On Sat, 1 Sep 2001, Deepak Jain wrote:

> The new P4s are shipping with 800mhz RAMBUS memory modules. Wouldn't 2GB of
> 800mhz RAM go a long way to evening out the performance between a PC/FreeBSD
> box and all but the most specialized, packet-pushing ASICs?
>
> I was doing some rough figuring, and could see how a P4 with its new bus and
> memory  path would have trouble forwarding at least 2Gb/s.
>
> Am I missing something?

Hard to say without testing it, but if your estimate is reasonable (could
you expand on how you arrived at it? there are interested eyes) then you
max out at <5Mpps, which is not core-class routing this year, but is
certainly within shooting distance of Juniper's entry level.

Without any proper grounds for the notion, I also suspect the ia64 might
do fairly well at fast packet classification.

J


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