[ROOT] memory problem (TFile)

From: Diego Faso (faso@to.infn.it)
Date: Thu Apr 08 2004 - 16:54:19 MEST


Good afternoon. I need to open, read and close several root files in a
'for loop'.
I encountered a problem of memory allocation: the memory allocated for the
'root' process does not decrease when I close the file

Here is an example:
 -------------------------------------------
(prompt)# root
 (root process memory = 33908)

root [0] TFile f1 = TFile("trees.root")
 (root process memory = 35552)

root [1] TTree *t = (TTree *) f1.Get("h127")
 (root process memory = 37492)

root [2] t->Delete()
 (root process memory = 37492)

root [3] f1.Close()
 (root process memory = 37492)

root [4] gROOT->Reset()
 (root process memory = 37496)
 -------------------------------------------

How can I solve this problem?

My machine is:

 - Linux red hat 9.0
 - gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5)
 - root version 4.00/02
 (I noticed the same problem for the root version 3.10.02)


Cheers
Diego Faso



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