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Date:      Mon, 28 Jun 1999 19:41:18 -0700
From:      "David Schwartz" <>
To:        <>, "Kris Kirby" <>
Cc:        <chat@FreeBSD.ORG>
Subject:   RE: 100 Mbps Ethernet? (fxp, xl performance) 
Message-ID:  <000101bec1d8$dd6c6dc0$>
In-Reply-To: <>

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	Small writes can hurt too. As can just generally bad design (like waiting
for one type of I/O before doing another). How are you measuring these
numbers? With ftp/ftpd?


> >I've got a crossover cable running between a P5/166 (fxp0) and a
> >K6/2-350 (xl0). It's negotiated at 100Mbps. I'm seeing ~3.5 MB/s from
> >the P5 to the K6-2, and 5.7[12] MB/s in the reverse direction. Is this
> >about right? The network is taking almost 50% of the CPU of the P5.
>    For 50% CPU, yes, that's about right. You can do about 11MB/sec on a
> typical P5 system (100% CPU). It looks like the K6 is throttling the
> speed potential or the test you're doing is slowing it down (perhaps
> involving file I/O?).
> -DG

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