Messages in this thread | | | Date | Thu, 25 Nov 2004 13:17:56 +1100 | From | Lincoln Dale <> | Subject | Re: Linux 2.6.9 pktgen module causes INIT process respawning and sickness |
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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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