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Date:      Mon, 15 Dec 1997 20:37:58 -0700 (MST)
From:      Charles Mott <cmott@srv.net>
To:        FreeBSD Hackers <hackers@FreeBSD.ORG>
Subject:   Re: 3com 3c509 card 
Message-ID:  <Pine.BSF.3.96.971215203225.5141C-100000@darkstar.home>
In-Reply-To: <199712160244.NAA00629@word.smith.net.au>

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> Nope.  They're both PIO cards, and the 'ed' driver spits all over the 
> 'ep' driver.  Any inversions you may have seen would have been 
> environmental relating to the different behaviour of the various chips 
> relating to bus traffic.
> 
> Yes, I've used both.  Yes, I've seen > 1000K/sec out of an 'ed' card on 
> a 486/50.   With modern processors, yes, the differences are less 
> evident, but I'll still take an NE2000 over a 509 anyday.  Especially 
> when a single-chip card based on something like the RTL2019 costs less 
> than AUD$40, and "just works".
> 
> mike
> 

I've gotten 700 Kbytes/sec for sustained transfers on an NE 2000 clone on
a 386/33 under 2.2.2.  Performance under 2.1.x was 300 Kbytes/sec. 
Something radically improved in the 2.1->2.2 transition.  I had thought it
was the core networking code, but I am wondering if the driver improved
also.

Sometimes slow CPUs are good indicators of software improvements.

Charles Mott




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