[Zope] z2.py -i

[Bak@kedai]

hello all
can anybody shed some light on the "-i" option in z2.py.  according to the 
help 

-i n
 
    Set the interpreter check interval. This integer value
    determines how often the interpreter checks for periodic things
    such as thread switches and signal handlers. The Zope default
    is 120, but you may want to experiment with other values that
    may increase performance in your particular environment.    

can anybody explain in plain english please.  if i decrease the number, 
what'll happen?  if i increase it?  what the heck is it anyway?

dummy, that's me..

tia
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