From: David Holroyd <ruby-talk@...>
Date: 2005-05-25T19:02:29+09:00
Subject: Re: UDP select()/recvfrom() delay under Windows?

On Tue, May 24, 2005 at 06:16:05PM +0900, David Holroyd wrote:
> On Tue, May 24, 2005 at 02:05:17PM +0900, Ville Mattila wrote:
> > David Holroyd <ruby-talk@badgers-in-foil.co.uk> writes:
> > > I notice that there is a gap of some several seconds between
> > > select() completing, and recvfrom() completing -- I expected that,
> > > since select() reports data can be read, recvfrom() should not
> > > block.  Am I wrong?
> > 
> >  I think this will be fixed in 1.8.3 so you could try it. There is a
> >  1.8.3rc1 available at www.ruby-lang.org. You have to compile it
> >  your self though.

> Using ruby 1.8.3 (2005-05-12) [i386-mswin32], I still see recvfrom()
> block for 4-5 seconds each time it's called.
> 
> Oddly, when I access the server off-site, using a tunnel, there's no
> delay (i.e. when the Ruby program is configured to connect to the tunnel
> endpoint on localhost, rather than directly to the server machine).

Thanks to the suggestion of Kent Sibilev in...

  http://www.ruby-talk.org/cgi-bin/scat.rb/ruby/ruby-talk/143546

...my app is now running much faster.  Yay!  :)


dave

-- 
http://david.holroyd.me.uk/