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Well of course it is the problem. The kernel does lots of other stuff.

If you were to ask someone to build a vehicle that can go really fast you might end up with a car. But ideally you'd really want a rocket.

I'm sure that there are systems out there that serve web pages with only bare metal. Where the "kernel" exists only as an architectural stub. Why shouldn't the NIC serve web pages directly?




For example, there are systems that do video streaming directly from NAND-memory to NIC, bypassing the kernel to ensure high throughput (say, multiple 100Gbps optic links) and no jitter - linux handles the control part (data management, initiating new streams, etc), but the data part is outside of it.

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