> I'm wondering if anyone in this group has done or knows of a good profile
> of a tcp send going from user mode to bits on the wire. Reason I'm asking
> is the old "put TCP/IP on the NIC" is once again rearing its head, and I'm
> hoping there are numbers I can point to (ones that aren't old, that is)
> about why this may not be the best idea in the world. FreeBSD seems a good
> choice since it has a pretty reasonable implementation.
I'd start with "the NIC will require insane amounts of memory to deal
with links with large bandwidth/delay products". And when people tell
you that the NIC can just use system memory, you should slap them
around the head. The thought of a piece of hardware screwing with the
kernel memory allocator gives me the creeps. 8)
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