Maruan Sahyoun created PDFBOX-5286:
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Summary: Runtime degredation in RC1 and alpha2
Key: PDFBOX-5286
URL: https://issues.apache.org/jira/browse/PDFBOX-5286
Project: PDFBox
Issue Type: Bug
Components: Parsing
Affects Versions: 3.0.0 PDFBox
Reporter: Maruan Sahyoun
working/reviewing PDFBOX-5068 and PDFBOX-5263 I've experiencing runtime issues
for both 3.0.0-RC1 and 3.0.0-alpha2 when loading and saving a large PDF
https://crossasia-books.ub.uni-heidelberg.de/xasia/reader/download/506/506-42-86246-2-10-20190822.pdf
||version||runtime in millis||
|2.0.24 |2076|
|3.0.0-RC1 |219472|
|3.0.0-alpha2 |282284|
Basic test:
{code:java}
long start = System.currentTimeMillis();
PDDocument pdf = Loader.loadPDF(new File("506-42-86246-2-10-20190822.pdf"));
pdf.save(new NullOutputStream());
pdf.close();
long end = System.currentTimeMillis();
System.out.println("Elapsed Time in milliseconds: "+ (end-start));
{code}
with NullOuputStream
{code:java}
package org.apache.pdfbox;
import java.io.IOException;
import java.io.OutputStream;
public class NullOutputStream extends OutputStream {
@Override
public void write(byte[] b) throws IOException {
// don't write anything
}
@Override
public void write(byte[] b, int off, int len) throws IOException {
// don't write anything
}
@Override
public void write(int b) throws IOException {
// don't write anything
}
}
{code}
I've also running tests using JMH - they support these numbers. The difference
in numbers for RC1/alpha2 are within a regular variation.
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