Re: Re[4]: PDFRenderer, PDDocument memory issue
Alex Sviridov ooo_satu...@mail.ru hat am 1. Juli 2015 um 13:09 geschrieben:
I decided to show all the code. I also send the pdf file - some file from
internet I use for testing.
The attachment didn't make it due to some restrictions to the mailing list.
Please post a link to the origin source or another place where we can download
the pdf in question.
Task task = new Task() {
@Override protected Integer call() throws Exception {
for (int i=0;imodel.getTotalPages();i++){
System.out.println(Point a:+i);
WritableImage writableImage=model.getPageThumbImage(i);
System.out.println(Point b:+i);
ImageView imageView=new ImageView(writableImage);
System.out.println(Point c:+i);
Label label=new Label(Integer.toString(i+1));
System.out.println(Point d:+i);
VBox vBox=new VBox(imageView,label);
System.out.println(Point e:+i);
vBox.setAlignment(Pos.CENTER);
vBox.setStyle(-fx-padding:5px 5px 5px
5px;-fx-background-color:red);
System.out.println(Point f:+i);
Platform.runLater(new Runnable() {
@Override
public void run() {
thumbFlowPane.getChildren().add(vBox);
}
});
}
return null;
}
};
new Thread(task).start();
And here is the tail of the output
Point a:30
Point b:30
Point c:30
Point d:30
Point e:30
Point f:30
Point a:31
What is scratch file? Sorry, I don't understand you.
PDFBox holds a lot of temporary data in the memory. To reduce the memory
footprint one can choose to use a scratch file instead, so that some/most of
that data will be hold in a file.
To do so, simply use another load method, e.g.
load(File file, boolean useScratchFiles)
Среда, 1 июля 2015, 13:04 +02:00 от Andreas Lehmkühler andr...@lehmi.de:
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
Re[4]: PDFRenderer, PDDocument memory issue
I decided to show all the code. I also send the pdf file - some file from
internet I use for testing.
Task task = new Task() {
@Override protected Integer call() throws Exception {
for (int i=0;imodel.getTotalPages();i++){
System.out.println(Point a:+i);
WritableImage writableImage=model.getPageThumbImage(i);
System.out.println(Point b:+i);
ImageView imageView=new ImageView(writableImage);
System.out.println(Point c:+i);
Label label=new Label(Integer.toString(i+1));
System.out.println(Point d:+i);
VBox vBox=new VBox(imageView,label);
System.out.println(Point e:+i);
vBox.setAlignment(Pos.CENTER);
vBox.setStyle(-fx-padding:5px 5px 5px
5px;-fx-background-color:red);
System.out.println(Point f:+i);
Platform.runLater(new Runnable() {
@Override
public void run() {
thumbFlowPane.getChildren().add(vBox);
}
});
}
return null;
}
};
new Thread(task).start();
And here is the tail of the output
Point a:30
Point b:30
Point c:30
Point d:30
Point e:30
Point f:30
Point a:31
What is scratch file? Sorry, I don't understand you.
Среда, 1 июля 2015, 13:04 +02:00 от Andreas Lehmkühler andr...@lehmi.de:
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
-
To unsubscribe, e-mail: users-unsubscr...@pdfbox.apache.org
For additional commands, e-mail: users-h...@pdfbox.apache.org
--
Alex Sviridov
-
To unsubscribe, e-mail: users-unsubscr...@pdfbox.apache.org
For additional commands, e-mail: users-h...@pdfbox.apache.org
