Re: [ROOT] test/MainEvent example - problems with Draw afterwards

From: Torsten Harenberg (harenberg@physik.uni-wuppertal.de)
Date: Fri Jun 13 2003 - 15:19:08 MEST 

On Thu, 12 Jun 2003, Rene Brun wrote:

> Hi Torsten,
>
> I looked at your file and I understand why you get the problem.
> You have specified split=1 in your class Event. You should specify
> at least split=2 if you want to see each member of your TClonesArray
> in a separate branch.
> If you do T.Print(), you will see:
>
> *Br   47 :fgenTracks :
> *Entries :   186059 : Total  Size=  557009404 bytes  File Size  =
> 36544499
> *Baskets :     8739 : Basket Size=      64000 bytes  Compression=  15.24
>
> Any traversal of this branch will load 577 Megabytes in memory !
>

Thanks Rene,

for your quick answer: that worked and solved my problem. :)

Just for curiosity: is it clear to you why - in case of split=1 - the
memory for every Draw() is not cleared after the plot has finished, while
now -with split=2- I can Draw()  thousands of times without any increase
in memory consumption?

Thanks again,

    Torsten

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<>                                                              <>
<> Torsten Harenberg         harenberg@physik.uni-wuppertal.de  <>
<> Bergische Universitaet                                       <>
<> FB 8 - Physik             Tel.: +49 (0)202 439-2740          <>
<> Gaussstr. 20              Fax : +49 (0)202 439-2811          <>
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