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SubjectRe: Linux 2.6.9 pktgen module causes INIT process respawning and sickness
At 09:54 AM 24/11/2004, Jeff V. Merkey wrote:
[..]
>True. Without the proposed hardware change to the 1 GbE abd 10GbE adapter,
>I doubt this could be eliminated. There would still be the need to free
>the descriptor
>from the ring buffer and this does require touching this memory. Scrap
>that idea.
>The long term solution is for the card vendors to enable a batch mode for
>submission
[..]

Jeff,

so the fact still remains: what is so bad about the current approach.
sure -- it can't do wire-rate 1GbE with minimal sized frames -- but even if
it could -- would it be able to do bidirectional 1GbE with minimal sized
frames?

even if you could, can you name a real-world application that would
actually need that?


you make the point of "these things are necessary for 10GbE".
sure, but -- again -- 10GbE NICs are typically an entirely different beast,
with far more offload, RAM , DMA & on-board firmware capabilities.

take a look at any of the 10GbE adapters, either already released,
announced, or in development. they all go well beyond 1GbE NICs for
embedded smarts; they have to.

the ability to wire-rate minimum-packet-size 10GbE is still not going to be
something that any real-world app (that i can think of) requires.
10GbE wire-rate is in the order of ~14.88 million packets/second. that
works out to approximately 1 packet every 67 nanoseconds.



cheers,

lincoln.

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