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Date:      Thu, 3 Feb 2000 11:23:45 -0800 (PST)
From:      Matthew Jacob <mjacob@feral.com>
To:        "Kenneth D. Merry" <ken@kdm.org>
Cc:        Thomas Stromberg <tstromberg@rtci.com>, freebsd-hackers@FreeBSD.ORG
Subject:   Re: Suggestions for Gigabit cards for -CURRENT
Message-ID:  <Pine.BSF.4.05.10002031122280.64395-100000@semuta.feral.com>
In-Reply-To: <20000203122114.A53673@panzer.kdm.org>

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> 
> I think the memory would come in handy on a heavily loaded system, since
> you would gain a little extra time in case you were a little late servicing
> interrupts.  i.e. it would smooth out the bumps a little bit.

Yes, but that's what having 8192 2KByte descriptors handy is for... (that's
16MB of buffering).

> 
> If your PCI implementation won't keep up with gigabit speeds, you'll just
> go slower. :)  Most newer systems (e.g. 440BX) shouldn't have any trouble
> doing a reasonable amount of speed over gigabit ethernet, though.

Typically I don't see higher than 60 or 70MB/s real throughput on most
systems.

-matt




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