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Re: 1.03Mpps on e1000 (was: Re: [E1000-devel] Transmission limit)

To: Lennert Buytenhek <buytenh@xxxxxxxxxxxxxx>
Subject: Re: 1.03Mpps on e1000 (was: Re: [E1000-devel] Transmission limit)
From: Martin Josefsson <gandalf@xxxxxxxxxxxxxx>
Date: Sun, 5 Dec 2004 16:19:29 +0100 (CET)
Cc: Scott Feldman <sfeldma@xxxxxxxxx>, jamal <hadi@xxxxxxxxxx>, Robert Olsson <Robert.Olsson@xxxxxxxxxxx>, P@xxxxxxxxxxxxxx, mellia@xxxxxxxxxxxxxxxxxxxx, e1000-devel@xxxxxxxxxxxxxxxxxxxxx, Jorge Manuel Finochietto <jorge.finochietto@xxxxxxxxx>, Giulio Galante <galante@xxxxxxxxx>, netdev@xxxxxxxxxxx
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On Sun, 5 Dec 2004, Lennert Buytenhek wrote:

> > 60      1483890
> > [snip]
> >
> > Which is pretty nice :)
> Not just that, it's also wire speed GigE.  Damn.  Now we all have to go
> and upgrade to 10GbE cards, and I don't think my girlfriend would give me
> one of those for christmas.

Yes it is, and it's lovely to see.
You have to nerdify her so she sees the need for geeky hardware enough to
give you what you need :)

> > This is on one port of a 82546GB
> >
> > The hardware is a dual Athlon MP 2000+ in an Asus A7M266-D motherboard and
> > the nic is located in a 64/66 slot.
> Hmmm.  Funny you get this number even on 64/66.  How many PCI bridges
> between the CPUs and the NIC?  Any idea how many cycles an MMIO read on
> your hardware is?

I verified that I get the same results on a small whimpy 82540EM that runs
at 32/66 as well. Just about to see what I get at 32/33 with that card.


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