[ROOT] TChain speed

From: Sebastien Greder (greder@in2p3.fr)
Date: Thu Sep 18 2003 - 16:35:50 MEST 

Hello Rooters,

 I have a pb while using TChain if I put open file in the chain
 the prog runs  nicely, adding other files decrease the execution 
 speed by 10-15. Before bothering you with code, I'd like to know what I
 should look at first (if they are some obvious causes to this
 consequence !)to make tests 
 otherwise I can send some piece of code on a public aera,

 thanks,

 seb.

 I'm running on RH 7.2 , gcc 2.96. rootv3.05.07

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