[PDFBOX-5051] Slow rendering for specific PDF file

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.21
• Fix Version/s: 2.0.24, 3.0.0 PDFBox
• Component/s: Rendering
• Environment: Amazon Coretto jdk11.0.3_7, OpenJDK 15
• Assignee: Tilman Hausherr
• Reporter: Stefan Mueller
• Created: 18/Dec/20 05:39
• Updated: 24/May/22 16:12
• Resolved: 27/Apr/21 17:34

Description

Doing PDF rendering upon the document being attached is rather slow.

It takes 18 seconds on a Core i7 machine with 32 GB of RAM and no maximum being imposed upon the JVM.

 System.setProperty("sun.java2d.cmm", "sun.java2d.cmm.kcms.KcmsServiceProvider");
 long ms = System.currentTimeMillis();        
 try (final PDDocument document = PDDocument.load(new File("C:\\temp\\slowpdfbox.pdf")))
{         
ms = System.currentTimeMillis() -ms;         
System.out.println("Took " + ms + " milliseconds for loading");                     
PDFRenderer pdfRenderer = new PDFRenderer(document);            
pdfRenderer.setSubsamplingAllowed(true);            

for (int page = 0; page < 1; ++page)            
{             
ms = System.currentTimeMillis();                             
BufferedImage bim = pdfRenderer.renderImageWithDPI(page, 300, ImageType.RGB);                                
ms = System.currentTimeMillis() -ms;                
System.out.println("Took " + ms + " milliseconds for rendering");                   
                
String fileName = "c:\\temp\\test.jpg";                
ImageIOUtil.writeImage(bim, fileName, 300); //<---this number            
}           
 document.close();        
} 
catch (IOException e){           
 System.err.println("Exception while reading pdf document - " + e);        
}

Console Output:

Took 262 milliseconds for loading
Dez. 18, 2020 6:25:15 VORM. org.apache.pdfbox.pdmodel.graphics.color.PDICCBased ensureDisplayProfile
WARNUNG: ICC profile is Perceptual, ignoring, treating as Display class
Took 17914 milliseconds for rendering

 

 

Issue Links

• is duplicated by: PDFBOX-5171 Slow PDColorSpace.toRGBImageAWT when processing many pixel sized chuncks
• is related to: PDFBOX-5310 Slow rendering for specific PDF File with small chunks 16x8
• is related to: PDFBOX-5442 Rending with the incorrect color