Re: delete time for complex geometries

From: rhatcher@SLAC.stanford.edu
Date: Sat Apr 01 2000 - 03:48:58 MEST


A small followup on my earlier message.  Actually my macro doesn't take
_hours_ to delete the geometry it only takes:

 destroy geometry Real time 0:31:59, CP time 1919.090
 done destruction 

32 minutes.  Though it did _used_ to take hours but I restructured
things so that all the 484x192 strips weren't in the top level node
but were more hierarchical (192 strips inside each of 484 planes).

Valeri Fine suggested that this behavour could be due to garbage collection
during the deletion of the shape's THashList and node's TList (hierarchy).
Is there some way to flag a TList (and derivatives) turn this garbage 
collection activity off?  A quick glance at TList (and ancestors) didn't
seem to turn up anything.  I also didn't see what exactly triggers
the garbage collection -- guess I have to study the code carefully
to find that out.

-robert



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