RE: Speeding up Image generating rate.

take a look at JProbe. They have a 30-day trial or something like that.  This will show you where
in the code you are spending all your execution time.

http://www.quest.com/jprobe/



--- Yossi Baram <[email protected]> wrote:
>  Hi Jeremias,
> Thanks for the help mate.
> I have done all 3 changes that you advised.
> Will keep the changes but no real improvement in the speed of things.
> Can you elaborate a bit about the caching and using a profiler for improvements?
> Thanks a lot
> Yossi
> 
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Jeremias Maerki
> Sent: Wednesday, June 02, 2004 13:32
> To: [email protected]
> Cc: [email protected]
> Subject: Re: Speeding up Image generating rate.
> 
> Hi Yossi,
> 
> I see three easy possibilities:
> 1. Buffer your FileOutputStream by wrapping it in a BufferedOutputStream.
> 2. Don't recreate the configuration and logger each time you create a barcode. And you can reuse
> the BarcodeGenerator instance. Only the CanvasProvider has to be recreated.
> 3. Use a different output format than JPEG which is quite slow. JPEG uses a lossy compression
> algorithm which results in less-than-ideal quality of the generated barcodes. I'd use PNG, TIFF
> or GIF.
> 
> Then you could modify the source code to cache the BufferedImage instances. If you create 20'000
> images you allocate and dismiss a lot of memory.
> 
> If you really want to squeeze out everything you will have to use a profiler to narrow down any
> other opportunities for improvement. I will gladly incorporate any improvements you find into
> the package.
> 
> I hope this helps.
> 
> On 02.06.2004 11:51:08 Yossi Baram wrote:
> > hi,
> > I have a function that creates a barcode image.
> >  
> >  
> >  public boolean setBarcodeImage(String imgStr,int barCodeType,String imageName){
> >   boolean succeed=true;
> >   try {
> >    DefaultConfigurationBuilder builder = new DefaultConfigurationBuilder();
> >    Configuration cfg = builder.buildFromFile(new File("barcode-EAN13-cfg.xml"));
> >    Logger log = new NullLogger();
> >    BarcodeGenerator gen = BarcodeUtil.getInstance().createBarcodeGenerator( cfg, log );
> >    OutputStream out = new FileOutputStream(new File(imageName));
> >     BitmapCanvasProvider provider = new BitmapCanvasProvider(
> >     out, "image/jpeg", 100, BufferedImage.TYPE_BYTE_GRAY, true);
> >   
> >    if(imgStr.equals(null)) 
> >    {   
> >      imgStr = "0000000000000";
> >    }
> >    gen.generateBarcode(provider, imgStr);
> >    provider.finish();
> >   } catch (Exception e) {
> >    succeed=false;
> >    System.out.println("Error creating Image: " + e);
> >   }
> >   return succeed;
> >  }
> >  
> > My big problem is the speed.
> > The rate of borcode images generation is 200 for 1 min.
> > It is very slow(I have ~ 20,000 images and more to create for integrating into a report).
> > Can I speed up the proccess?
> > Please advise.
> 
> 
> 
> Jeremias Maerki
> 
> 
> 
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