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Can’t it be done with MirageOS (OCaml lib that can create a bare-bones OS)

Awhile back I saw an implementation of a network stack in user space... unfortunately the author has a beef with Java and the Java version was written quite poorly; but despite that all versions were significantly faster than kernel (go figure).

Really what you are proposing is that server Operating Systems and hardware should have a "general NIC" for mundane shared tasks, and a dedicated NIC for handing over to a process and saying GLHF.

How does virtual threads get you DPDK? How do other apps get access to the network card and the SSD if you bypass the kernel?