Subject: Re: freebsd em driver
To: None <>
From: Thor Lancelot Simon <>
List: tech-net
Date: 06/17/2002 17:47:55
On Mon, Jun 17, 2002 at 02:43:07PM -0700, Jonathan Stone wrote:
> In message <>Jason R Thorpe writes
> >On Mon, Jun 17, 2002 at 01:58:03PM -0700, Jonathan Stone wrote:
> >
> >The "boards" in "in most boards" refers to "motherboards".
> Once more, then: Motherboards with 32/33 PCI are not a sensible test
> environment for gigabit ethernet. Taking performance numbers limited
> by such a 32/33 PCI host environment, and treating those numbers as a
> suitable performance target, is a *very* bad idea.
> Or to put it another way, s/most boards/most boards you'd put a
> high-end gigabit card into/. With the exception of using my own

That's not really true -- I'm perfectly willing to spend the $100 for
a "high-end gigabit card" for every machine I have.  I"m *not* willing
to spend $200-$300 or more per machine to replace motherboard and,
probably, memory and CPU as well.  I don't think I'm that atypical in
that regard.

In any event, however, you're right that 32/33 machines aren't really
ideal for doing throughput tests on gig-e.

 Thor Lancelot Simon	                            
   But as he knew no bad language, he had called him all the names of common
 objects that he could think of, and had screamed: "You lamp!  You towel!  You
 plate!" and so on.              --Sigmund Freud