[ROOT] Estimation of the size of a tree object in memory

From: HP Wei (hp@rentec.com)
Date: Sat Dec 14 2002 - 03:57:10 MET 

Hi rooters,
  If we get a tree object into the memory,
  how much memory does it occupy ??

  How about one tree with, say five branches activated ??
  (Assume the buffer_size for one branch is 1Kbytes.)

  Is there a difference in memory usage between
  (1) one tree with 100 branches activated,
  and
  (2) 20 trees with 5 branches for each tree ?

  If these are hard to know, just a rough estimate will
  be fine.

Thanks,
HP

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