Monday, April 30, 2012
On Sunday, April 29, 2012 7:51:38 AM UTC-3, Ruby-Forum.com User wrote:
Server starting failed (ruby 1.9.3p194, rails 3.2.3 )
Attachments:
http://www.ruby-forum.com/attachment/7346/ruby193err.txt
Please read the FAQ section that was mentioned with the release of RubyInstaller 1.9.3-p194:
https://groups.google.com/d/msg/rubyinstaller/nTcdd55fNiY/Mp-CitrdWkQJ
Will copy it here in case you don't see it:
= Q: What means by "increased file descriptors", how that affects me?
A: By default Ruby 1.9 was limited to 64 sockets when using select() function.
select() is a mechanism to set and clear the state of sockets that are waiting
for data. In other OS you have different 'pooling' mechanisms.
Most of the web servers that run on Ruby, specially the evented ones depends
on select().
Without this change these frameworks/libraries wouldn't be able to use more
than 64 open sockets, which affects any of us attempting to use Ruby on Windows
for more than testing things out.
Please note that this is a workaround to a bigger issue: select() and the
associated functions are not the recommended or optimally way to interact with
sockets on Windows.
If you encounter a problem running a pre-compiled evented library against this
build, please ask the library author to recompile with -DFD_SETSIZE=32767.
==
This will affect Thin because it uses EventMachine. Until that issue gets sorted out, you need to:
A) build locally EventMachine:
gem install eventmachine --pre --platform=ruby
B) Request the gem authors to release a gem with the flag updated
We are discussing the technical challenges to solve that at Ruby level:
http://bugs.ruby-lang.org/issues/6352
--
Luis Lavena
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