From: James Edward Gray II <james@...>
Date: 2006-02-14T01:47:08+09:00
Subject: Re: FasterGenerator (#66)

On Feb 13, 2006, at 3:07 AM, Jesse Yoon wrote:

> My solution was to get rid of SizedQueue and to use a Mutex and a
> ConditionVariable to accomplish just that. At that point I saw Caleb's
> solution and thought that starting and stopping a thead should be much
> slower than using Mutexes and Cond_Vars. To my surprise, that  
> wasn't the
> case. Mutex mechanism was much slower than Caleb's thread switching
> solution.

I'm pretty sure they learned the same lesson changing the standard  
library.  Have a look at these commit messages:

   * lib/generator.rb: uses Mutex instead of Thread.critical.
     [ruby-dev:28184]

Then later:

   Sorry, reverted. Mutex is damn slow.....

:)

James Edward Gray II