From: Charles Oliver Nutter <charles.nutter@...>
Date: 2007-01-29T03:59:39+09:00
Subject: Re: Benefits of Multi-Threading?

khaines@enigo.com wrote:
> That's a bit of a red herring, though.  With Ruby's green threads, every 
> active (i.e. not sleeping) thread that is added to a single process 
> reduces the overall throughput of all of the threads, collectively, by a 
> noticable amount.  While two separate processes on a single processor 
> may have less throughput than two threads in a single ruby process, 
> those two threads will have less throughput than a single thread.  So, a 
> single thread solution will typically be more performant than 
> multi-thread solution under Ruby's current threading model.

Unless, of course, you use JRuby, which supports full native threads today.

- Charlie