Re: [ROOT] Warnings for in-memory compression...

From: Chitov Iouri (chitov@lal.in2p3.fr)
Date: Mon Apr 01 2002 - 12:55:44 MEST


I localized the origin of this problem. The warning occurs in the
TTree::Fill(). I think, it appears on the stage then filled buffer
(defined in TBranch) is saved on the disk. Varying the size of this
buffer I change the appearance of warnings reading the same set of raw
files.

Best wishes,
Yuriy.

> Dear Valeri,
>
> Thank you for suggestion. I checked the memory statistics by
> gObjectTable->Print()
> after each step (reading of one binary data file) and didn't find any
> unexpected dynamics of objects
> as well as didn't find any relation between these warnings and memory
> dynamics or binary data file processed.
> It seems like some problems (?) of ROOT-intrinsic data management...
>
> Best wishes,
> Yuriy.
>
> Valeri Fine wrote:
>
> > Such messages used to manifest some kind of "memory leak"
> > Could be yours ? Check.
> >
> > ----- Original Message -----
> > From: "Chitov Iouri" <chitov@lal.in2p3.fr>
> > To: <roottalk@pcroot.cern.ch>
> > Sent: Sunday, March 31, 2002 3:46 PM
> > Subject: [ROOT] Warnings for in-memory compression...
> >
> > > Hi,
> > >
> > > With new ROOT version
> > >
> > > --------------------------------------------------------
> > >   *******************************************
> > >   *                                         *
> > >   *        W E L C O M E  to  R O O T       *
> > >   *                                         *
> > >   *   Version   3.03/02     29 March 2002   *
> > >   *                                         *
> > >   *  You are welcome to visit our Web site  *
> > >   *         http://root.cern.ch            *
> > >   *                                         *
> > >   *******************************************
> > >
> > > FreeType Engine v1.x used to render TrueType fonts.
> > > Compiled for linux with thread support.
> > >
> > > CINT/ROOT C/C++ Interpreter version 5.15.34, Mar 5 2002
> > > -------------------------------------------------------
> > >
> > > during creation of TTree ROOT file from binaries rawdata
> > > from time to time I have now these warnings:
> > >
> > > Processing /exp/nemo/chitov/tgv/data/20311003.dat... OK!
> > > Processing /exp/nemo/chitov/tgv/data/20311004.dat... OK!
> > > Processing /exp/nemo/chitov/tgv/data/20311005.dat... OK!
> > > R__zip: output buffer too small for in-memory compression
> > > R__zip: output buffer too small for in-memory compression
> > > R__zip: output buffer too small for in-memory compression
> > > Processing /exp/nemo/chitov/tgv/data/20311006.dat... OK!
> > > Processing /exp/nemo/chitov/tgv/data/20311007.dat... OK!
> > > out_offset=14, len=31932, out_size=31932
> > > R__zip: output buffer too small for in-memory compression
> > > Processing /exp/nemo/chitov/tgv/data/20311008.dat... OK!
> > > Processing /exp/nemo/chitov/tgv/data/20311009.dat... OK!
> > > Processing /exp/nemo/chitov/tgv/data/20311010.dat... OK!
> > > Processing /exp/nemo/chitov/tgv/data/20311011.dat... OK!
> > > Processing /exp/nemo/chitov/tgv/data/20311012.dat... OK!
> > > 12877 data events were saved in test.root
> > >
> > > With previous versions I never saw such warnings.
> > > It seems, like the final results are the same...
> > >
> > > Is it enough to clarify situation or should I go deeper in
> > > the problem?
> > >
> > > Best wishes,
> > > Yuriy.
> > >
> > >



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