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In-kernel web server

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An in-kernel web server is a (possibly limited) HTTP server that runs in kernel space or equivalent. Also called "accelerator".

Benefits

  • more performant path taken by data from disk to network. Proper asynchronous zero-copy interfaces would make this available from user-space.
  • higher scalability with respect to number of simultaneous clients. Event notification of comparable scalability seems impossible in user-spaceTemplate:Fn.

Drawbacks

  • Security
  • Portability. Every kernel needs a specific implementation.
  • Reliability. Failure in the webserver may crash the OS.

Implementations

See also

References

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