UNIX (Linux included) allows you to set a max number of file descriptors
that a given process can have open. The command controlling this
depends on the shell you're using. For instance, under Linux tcsh, it
is "limit" and under bash (/bin/sh) it is "ulimit"
I think the default is 256 -- you can check the current setting by
typing "limit descriptors" in tcsh or "ulimit -n" in bash. So, to set
it to something hight under tcsh, type "limit descriptors XXX" where XXX
is the number you want. Under bash, type "ulimit -n XXX". Read the man
page for bash or tcsh (limit and ulimit are builtin commands) for more
information. When I run servers, I usually set it to 1024.
Also, you really, really should not rely on garbage collection to close
files and sockets for you. While technically it's true that they will
be closed and the resources will be freed when GC finally catches them,
it's no way to write good software.
-nate
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