RE: [ROOT] out_offset ?

From: Helmut Gerhard SCHMUECKER (Helmut.Gerhard.Schmucker@cern.ch)
Date: Mon Jul 19 2004 - 10:04:42 MEST 

Hello,

I see the same messages when I try to save data that cannot be compressed. 
But it doesn't seem to do any harm, the data is valid.
Latest ROOT version:

void GZIP(){
TFile f("testZIP.root","recreate");
const int nb = 100000;
TBits bits(nb);
TRandom rnd(0);
for(int i=0; i<nb; ++i)
  bits.SetBitNumber(i,rnd.Rndm()>0.5);
bits.Write("yippi");
}

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FreeType Engine v2.1.3 used to render TrueType fonts.
Compiled for linux with thread support.

CINT/ROOT C/C++ Interpreter version 5.15.138, May 23 2004
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0] .x GZIP.C
out_offset=14, len=12525, out_size=12525
root [1] .q

cheers,
   Helmut







On Fri, 16 Jul 2004, Philippe Canal wrote:

> Hi Karl
> 
> Which version of ROOT are you using.
> 
> This message should be followed by something like
> 	output buffer too small for in-memory compression.
> 
> Do you have an simple example reproducing the problem?
> 
> Cheers,
> Philippe.
> 
> -----Original Message-----
> From: owner-roottalk@pcroot.cern.ch
> [mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Karl Hauschild
> Sent: Friday, July 16, 2004 12:11 PM
> To: roottalk@cern.ch
> Subject: [ROOT] out_offset ?
> 
> 
> 
> Hi,
> 
> While filling a Tree I occasionally obtain messages like the
> following :
> 
> out_offset=298779, len=25206, out_size=323926
> out_offset=298870, len=25115, out_size=323926
> out_offset=299006, len=24979, out_size=323926
> 
> I have searched the Root web page but could not find where
> these messages come from and what they imply. Can anyone help ?
> 
> 
> Cheers,
> 
> Karl
> 
> 

-- 
  `-------------------------------------------
Helmut Schmuecker
EP Division, CERN, 1211 Geneva 23, Switzerland
Mailbox: J26110
 Office: 32-R-C22
  Phone: (+41.22)76.78225
 E-mail: Helmut.Gerhard.Schmucker@cern.ch

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