FFI: number of worker threads?

[Tony Finch]

On Wed, 21 Jun 2006, Simon Peyton-Jones wrote:

> New worker threads are spawned on as needed.  You'll need as many of
> them as you have simultaneously-blocked foreign calls. If you have 2000
> simultaneously-blocked foreign calls, you'll need 2000 OS threads to
> support them, which probably won't work.

Does the RTS use select() to multiplex network IO instead of spawning
threads?

Tony.
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