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Date:      Mon, 8 Feb 1999 20:05:23 +0100
From:      Martin Cracauer <cracauer@cons.org>
To:        Brett Glass <brett@lariat.org>
Cc:        Martin Cracauer <cracauer@cons.org>, chat@FreeBSD.ORG
Subject:   Re: 100Mbit ethernet card comparision
Message-ID:  <19990208200523.A9112@cons.org>
In-Reply-To: <4.1.19990208115114.0457c800@mail.lariat.org>; from Brett Glass on Mon, Feb 08, 1999 at 11:53:55AM -0700
References:  <19990208145325.A8384@cons.org> <4.1.19990208115114.0457c800@mail.lariat.org>

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In <4.1.19990208115114.0457c800@mail.lariat.org>, Brett Glass wrote: 
> >OS      Card	MioByte/sec	%user	%sys	%interrupt
> >----------------------------------------------------------
> >Linux	de	10.93-10.96	3	26-28	-
> >FreeBSD	de	10.70-10.72	3	29-31	4-5
> >FreeBSD	fxp	10.66-10.67	3	25-28	5-6
> >FreeBSD 	rl	10.55-10.56	3	28-31	14-16
> >Linux	rl	10.85-11.14	3	28-30	-
> >Linux	fxp	doesn't work
> 
> 
> Very interesting. I'm surprised that there is so little difference
> between the cards! I'd been given to understand that the fxp driver
> was significantly more efficient than de or especially rl, but it
> seems not to matter in practice. Maybe I should buy more of those
> cheap rl cards.

The fxp driver needs about 12% less system CPU than the de driver,
that is significant. A different matter is that the de driver seems to
need a little less interrupt time (which does more damage than system
time), but the difference is little and could be benchmarking
sloopyness. 

How could you come to the conclusion the rl is as good as the de. Read
my mail again, rl under FreeBSD is suicide.

Martin
-- 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Martin Cracauer <cracauer@cons.org> http://www.cons.org/cracauer/
  Tel.: (private) +4940 5221829 Fax.: (private) +4940 5228536
  Paper: (private) Waldstrasse 200, 22846 Norderstedt, Germany

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