Re[2]: PDFRenderer, PDDocument memory issue

2015-07-01 Thread Alex Sviridov 
 Thank you for answer. I tried pdfbox-app-2.0.0-20150630.220424-1464.jar the 
result is the same.

When I create images I add them to javafx FlowPane. However, the problem is not 
in images because I repeat - I get 400mb when I do 
pdfDocument=null,pdfRenderer=null.

Bedised, when I do pdfDocument = PDDocument.load(new File(fileName)) I don't 
have any problems with memory. 

I'm getting problem with memory when I run in for loop getPageThumbImage.

I am sure that the problem is in PdfBox. Please, help me.


Среда,  1 июля 2015, 12:48 +02:00 от Andreas Lehmkühler andr...@lehmi.de:


 Alex Sviridov  ooo_satu...@mail.ru  hat am 1. Juli 2015 um 10:16 
 geschrieben:
 
 
  I want to display all page thumbnails. However I came across memory size
 problem with PDFRenderer or PDDocument - I don't know which one. 
 
 I have the following code:
    
     private PDDocument pdfDocument;
     
     private PDFRenderer pdfRenderer;
 
     public WritableImage getPageThumbImage(int page){
     WritableImage result=null;
     try {
     BufferedImage bi=pdfRenderer.renderImageWithDPI(page, 12,
 ImageType.RGB);
     result=SwingFXUtils.toFXImage(bi, null);
     } catch (IOException ex) {
  
     }
     return result;
     }
  .
 The method getPageThumbImage I run in for loop for every page.I set java
 memory heap to 500mb. 
 And I can get about 30 images using getPageThumbImage (if I set more memory I
 get more). 
 In my application I have real time memory graphs and they show that memory is
 very fast filled. 
 When there is no more free memory getPageThumbImage hangs - no exception,
 nothing. But the code stops.
 When I do pdfDocument=null,pdfRenderer=null I get about 400mb free memory. 
 How
 to solve this problem?
There are 2 possible issues and maybe both are relevant.

1. PDFBox consumes more or less memory to load a pdf depending on the size and
the content of the pdf.

- Are you using the latest 2.0.0-SNAPSHOT? There were some improvements
concerning the memory footprint lately
- Try to use of a scratch file (there are load methods including a boolean
switcht ot activate that)

2. Your own implementation consumes more or less memory to process those
thumbnails

- check if you are releasing all resources (ecspecially those images you're
creating) you are using during your process

HTH,
Andreas

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-- 
Alex Sviridov

Re: Re[2]: PDFRenderer, PDDocument memory issue

2015-07-01 Thread Andreas Lehmkühler 


 Alex Sviridov ooo_satu...@mail.ru hat am 1. Juli 2015 um 12:58 geschrieben:
 
 
  Thank you for answer. I tried pdfbox-app-2.0.0-20150630.220424-1464.jar the
 result is the same.
 
 When I create images I add them to javafx FlowPane. However, the problem is
 not in images because I repeat - I get 400mb when I do
 pdfDocument=null,pdfRenderer=null.
 
 Bedised, when I do pdfDocument = PDDocument.load(new File(fileName)) I don't
 have any problems with memory. 
 
 I'm getting problem with memory when I run in for loop getPageThumbImage.
 
 I am sure that the problem is in PdfBox. Please, help me.
Maybe, but I'm not sure at all.

Try to use the scratch file.

 Среда,  1 июля 2015, 12:48 +02:00 от Andreas Lehmkühler andr...@lehmi.de:
 
 
  Alex Sviridov  ooo_satu...@mail.ru  hat am 1. Juli 2015 um 10:16
  geschrieben:
  
  
   I want to display all page thumbnails. However I came across memory size
  problem with PDFRenderer or PDDocument - I don't know which one. 
  
  I have the following code:
     
      private PDDocument pdfDocument;
      
      private PDFRenderer pdfRenderer;
  
      public WritableImage getPageThumbImage(int page){
      WritableImage result=null;
      try {
      BufferedImage bi=pdfRenderer.renderImageWithDPI(page, 12,
  ImageType.RGB);
      result=SwingFXUtils.toFXImage(bi, null);
      } catch (IOException ex) {
   
      }
      return result;
      }
   .
  The method getPageThumbImage I run in for loop for every page.I set java
  memory heap to 500mb. 
  And I can get about 30 images using getPageThumbImage (if I set more memory
  I
  get more). 
  In my application I have real time memory graphs and they show that memory
  is
  very fast filled. 
  When there is no more free memory getPageThumbImage hangs - no exception,
  nothing. But the code stops.
  When I do pdfDocument=null,pdfRenderer=null I get about 400mb free memory.
  How
  to solve this problem?
 There are 2 possible issues and maybe both are relevant.
 
 1. PDFBox consumes more or less memory to load a pdf depending on the size
 and
 the content of the pdf.
 
 - Are you using the latest 2.0.0-SNAPSHOT? There were some improvements
 concerning the memory footprint lately
 - Try to use of a scratch file (there are load methods including a boolean
 switcht ot activate that)
 
 2. Your own implementation consumes more or less memory to process those
 thumbnails
 
 - check if you are releasing all resources (ecspecially those images you're
 creating) you are using during your process
 
 HTH,
 Andreas
 
 -
 To unsubscribe, e-mail:  users-unsubscr...@pdfbox.apache.org
 For additional commands, e-mail:  users-h...@pdfbox.apache.org
 
 
 
 -- 
 Alex Sviridov

BR
Andreas

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