[Twisted-Python] Multiple main loops

[glyph at divmod.com]

>glyph at divmod.com wrote:
>>Why is a second event-loop necessary here?

>Hi Glyph. I believe that performance would suffer using a single loop. I am 
>not aware of any evaluation to provide evidence of the extent of the impact 
>this would have.

Fair enough.

>The thought of using the existing reactor for communication and serving has 
>not escaped me. Once I have a syncing server working in twisted with 
>whatever protocol I use, I will have the chance to evaluate performance on a 
>couple of levels. This discussion for me has a bit more to do with 
>possibilities and exploring boundaries at this point. Googling for 
>information, I came across the patch that also suggested the possibility of 
>multiple independent reactors. This possibility is interesting to me,  even 
>outside of zope.

Despite the fact that I don't have a similar use-case on a real server or client, it's also interesting to me.  It would definitely make certain test-cases easier to write, and easier testing == more tests.  :)

I previously suggested that perhaps you could write tests for that patch, to verify that multiple reactors could actually run simultaneously.  That was a serious suggestion: if you'd like Twisted to support this feature, you can almost certainly get it accepted if there are accompanying test cases.  I'll commit to doing the reviews if you submit the patches.