Which MPM for Apache2?

[Steve Dondley <sdondley@gmail.com>]

I just did a fresh install of Sarge. I set it up to run Apache2 out of the box. 

Now I'm trying to figure which Multi-Processing Module (MPM) it's
running by default.  I see there are 4 different MPM packages:

apache2-mpm-perchild
apache2-mpm-prefork
apache2-mpm-threadpool
apache2-mpm-worker

>From the descriptions, it seems like I should be using "worker".  Is
there any reason to switch to worker from the from the default MPM
(whatever the default is)?

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