From: Logan Capaldo <logancapaldo@...>
Date: 2007-02-25T03:24:17+09:00
Subject: Re: threads within a thread

On Thu, Feb 22, 2007 at 04:33:15AM +0900, Gary Wright wrote:
> 
> On Feb 21, 2007, at 2:19 PM, Jason Roelofs wrote:
> 
> >Since you're writing this in Ruby, I have to suggest that you just  
> >write
> >this single-threaded. Ruby uses green threads, meaning it handles  
> >it's own
> >threading and not the system, leading to on average decreased  
> >execution time
> >vs single-threaded.
> 
> If you were talking about CPU bound jobs that might be true, but
> probing networks has lots of inherent I/O latency.  Green threads should
> be just fine for this sort of thing as you are basically waiting on
> various packets to return from the probed hosts.
> 
Actually, (appealling to authority here :) ) I believe Francis has
stated in the past that the Thread overhead kills the advantage for even
IO bound tasks (in Ruby specifically) and that a select loop is better.
> Gary Wright
> 
> 
>