From: Roger Pack <rogerpack2005@...>
Date: 2009-05-12T00:56:14+09:00
Subject: Re: Too many open files

> Thank you very much for your reply. It makes me understand the limit. 
> But why do I have only 256 limit not even 512? I use Ruby 1.8.6 version 
> and run on XP. If I can make my limit to 512, it will help little bit.

It's 256 because after ruby code opens any file descriptor it "dup's" 
them for internal use (for some reason--I can't remember why it's 
explained in the code).


> Since my application is not that time critical, I use a single thead to 
> do the select. and slice all sockets into multiple a group of 64 i/o 
> array. I have got around of 64 limit. my problem is realy 256 max open 
> file limit. What I can do to make it at least 512?

Maybe by recompiling ruby using a newer MSVC compiler.  Or figuring out 
how to compile the mingw one and have it *link* against a different 
version of msvcrt (I've heard it's possible to have mingw link against 
an arbitrary version of msvcrt.dll--it defaults to version 6--I have not 
yet heard of anybody trying that with ruby, though it should be 
possible).

You might be able to use rev instead (which which require a rewrite, but 
might give you more descriptors)--I'll check on its limit sometime.

http://github.com/rogerdpack/rev/tree/master
version
compiles well for mingw.
-=r
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