[Haskell-cafe] FreeBSD: Max # of sockets opened

[Tony Finch]

On Tue, 13 Dec 2005, Joel Reymont wrote:
>
> It looks like 'ulimit -n' on FreeBSD lets you have 10k+ file descriptors open
> per process. FD_SETSIZE is 1024 in the system headers, though. GHC relies on
> this value (see ghc/rts/Select.c).

FD_SETSIZE is actually dynamic on FreeBSD (at least from the kernel's
point of view - the macros are less so). You can re-set it to whatever
value you like at compile time (e.g. gcc -DFD_SETSIZE=10240).

Tony.
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