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[[!tag open_issue_hurd]]

Hurd servers / VFS libraries are multithreaded, roughly using one thread per
incoming request.  This is not the best approach: it doesn't really make sense
to scale the number of worker threads with the number of incoming requests, but
instead they should be scaled according to the backends' characteristics.

The [[hurd/Critique]] should have some more on this.


Alternative approaches:

  * Continuation-passing style

      * [[microkernel/Mach]] internally [[uses
        continuations|microkernel/mach/continuation]], too.

  * [[Erlang-style_parallelism]]

  * [libtcr - Threaded Coroutine Library](http://oss.linbit.com/libtcr/)

  * <http://monkey.org/~provos/libevent/>

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See also: [[multiprocessing]].