Re: [ROOT] Strange TTimer behavior under win98

From: Valeri Fine (fine@bnl.gov)
Date: Mon Aug 13 2001 - 21:30:18 MEST 

I have to beg  a pardon.

I've tested TTimer under Linux and found no problem.
Maybe Fons can explain what is going on ?
Where is TTimer->Notify() is called from and why ?

  Cheers, Valeri 
-----
Dr.Valeri Fine
STAR/US Atlas                                    E-mail: fine@bnl.gov
Brookhaven National Lab                Phone: +1 631 344 7806
Upton, NY 11973-5000                       FAX:     +1 631 344 7806
USA



----- Original Message ----- 
From: "Valeri Fine" <fine@bnl.gov>
To: "Anton Fokin" <anton.fokin@smartquant.com>; <roottalk@pcroot.cern.ch>
Sent: Monday, August 13, 2001 2:38 PM
Subject: Re: [ROOT] Strange TTimer behavior under win98


> Hello,Anton
> This feature has nothing to do with Windows.
> 
> To solve your puzzle one should start ROOT with "trace" option.
> 
> Do:
> 
> .T
> TTimer Timer(100);
> Timer.Start();
> 
> You should get (TTimer *)0x777->Notify() forever !
> To see where this hell comes from go to:
> http://root.cern.ch/root/htmldoc/src/TTimer.cxx.html#TTimer:Notify
> 
> This means each time when the TTimer period is elapsed it calls CINT. 
> CINT in turn 
>  1. creates a temporary file, 
>   2. writes a C++ statement into the file 
>   3. reads it back to interpret
>   4. deletes the temporary file.
> 
> This is 10 times /sec as one may have guessed for your case.
> 
> Hope  this explains the weird behavior you was observing
> 
>    Best regards, Valeri
> 
> 
> -----
> Dr.Valeri Fine
> STAR/US Atlas                                    E-mail: fine@bnl.gov
> Brookhaven National Lab                      Phone: +1 631 344 7806
> Upton, NY 11973-5000                       FAX:     +1 631 344 4206
> USA
> 
> 
> 
> ----- Original Message ----- 
> From: "Anton Fokin" <anton.fokin@smartquant.com>
> To: <roottalk@pcroot.cern.ch>
> Sent: Monday, August 13, 2001 5:03 AM
> Subject: [ROOT] Strange TTimer behavior under win98
> 
> 
> > Hello people,
> > 
> > I observe a very strange TTimer feature on win98:
> > 
> > if I simply type
> > 
> > TTimer Timer(100);
> > Timer.Start();
> > 
> > It starts accessing the harddisk every second and does it very
> > instensively (looks/sounds like swapping). I do not observe this under
> > winNT though. Does anyone notice something like that?
> > 
> > Regards,
> > Anton
> > 
> > 
> 
>

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