Which one? (Exact version)
I'm asking just to check that you haven't an old one, e.g. 40.
Tilman
Am 24.03.2020 um 17:26 schrieb Hesham Gneady:
JDK 8.0
Best regards,
Hesham
--------------------------------------------------------------------------------------------------
Included Message:
What jdk are you using?
Tilman
Am 24.03.2020 um 17:15 schrieb Hesham Gneady:
Oh! ... That's absolutely right. I am now getting right results:
1. Heap before Loading PDF Doc:
Current heap size: 265289728
Free heap size: 212918368
--------------------------------
2. Heap after loading the PDF Doc:
Current heap size: 908066816
Free heap size: 342499608
--------------------------------
3. Heap after closing the PDF Doc:
Current heap size: 908066816
Free heap size: 849820016
--------------------------------
Best regards,
Hesham
-----Original Message-----
Memory is only freed after a GC run. You Need to invoke that explicitly.
Am 24.03.2020 um 14:40 schrieb Hesham Gneady <heshamgne...@gmail.com>:
Hello,
I am trying to make a test to see the amount of memory consumed
before and after loading a PDF file using PDFBox, and also the
consumed memory after closing the PDF file, but I've noticed that the
memory consumed after loading the PDF file is the same after closing
the PDF file. It seems that i am doing something wrong, or that the
PDF is still loaded in memory! . Here is the code I'm using:
private String docPath = "c:\400mb.pdf"
public void loadPDFDocument() {
printHeap( "1. Heap before Loading PDF Doc:" );
PDDocument document = null;
try {
document = PDDocument.load(new
File(docPath));
printHeap( "2. Heap after loading the PDF Doc:"
);
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
if (document != null) {
try {
document.close();
printHeap( "3.
Heap after closing the PDF Doc:" );
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
public void printHeap( String title ) {
long heapSize = Runtime.getRuntime().totalMemory();
long heapFreeSize = Runtime.getRuntime().freeMemory();
System.out.println( title );
System.out.println( "Current heap size: " + heapSize );
System.out.println( "Free heap size: " + heapFreeSize );
System.out.println( "--------------------------------"
);
}
The output for this code when calling loadPDFDocument() is:
1. Heap before Loading PDF Doc:
Current heap size: 265289728
Free heap size: 203194096
--------------------------------
2. Heap after loading the PDF Doc:
Current heap size: 899153920
Free heap size: 343428432
--------------------------------
3. Heap after closing the PDF Doc:
Current heap size: 899153920
Free heap size: 343428432
--------------------------------
Am I doing something wrong here?
Best regards,
Hesham
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