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Date:      Fri, 24 May 2002 10:32:34 -0500
From:      Dan Nelson <dnelson@allantgroup.com>
To:        Drew Derbyshire <ahd@kew.com>
Cc:        questions@FreeBSD.ORG
Subject:   Re: parallel port links
Message-ID:  <20020524153234.GD1977@dan.emsphone.com>
In-Reply-To: <008701c20336$472d8cc0$e603010a@int.meetingmaker.com>
References:  <008701c20336$472d8cc0$e603010a@int.meetingmaker.com>

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In the last episode (May 24), Drew Derbyshire said:
> How fast does the Parallel port IP transfer data?  How much CPU does
> it use when idle?  (The manual pages are vague, reporting the driver
> is a pig when handshaking and waiting for data.) Large amounts of
> data will be moved, including dumping a 9G disk a couple of times a
> week.

80K/sec max; uses no CPU when idle (but 100% cpu when in use).
 
> Target machines are a pair of Dell GX1 PII 350's, both running
> FreeBSD 4.4.
> 
> I specifically only need these two machines on this point-to-point
> link, I've got this extra parallel cable, I've got these free
> parallel ports ... but no need to be pennywise and pound foolish.  I
> can throw a pair of 10/100 cards in the two machines with a cross
> over cable if it will be that much faster.

Use the NICs.

-- 
	Dan Nelson
	dnelson@allantgroup.com

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