Messages in this thread |  | | | Subject | Re: [patch] ns83820 0.17 | | From | "Trever L. Adams" <> | | Date | 12 Mar 2002 13:12:32 -0500 |
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On Tue, 2002-03-12 at 06:15, David S. Miller wrote:
> Use a cross-over cable to play with Jumbo frames, that is > what I do :-) > > Later this week I'll rerun tests on all the cards I have > (Acenic, Sk98, tigon3, Natsemi etc.) with current drivers > to see what it looks like with both jumbo and non-jumbo > mtus over gigabit.
I no longer have the original, so I will just have to respond to this one, since it is related. I know I know nearly nothing about networking, but here has been my thinking.
David, you believe we don't need NAPI. You believe we perform fine without it. Here is my question. A PCI bus, IRC, has about 500 Megabytes/sec of bandwidth. A full blown gigabit Ethernet stream should be around 133 Megabytes/sec. Sounds to me like a PC could act easily (As far as bandwidth is concerned) as a 4 to 5 port gigabit Ethernet router.
How well does this work with NAPI and how well does it work without? Is NAPI a gain here?
Maybe there are other issues involved that I am unaware of, if there are, I would still like to see how the theoretical answers pan out.
Thank you, Trever Adams
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