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https://issues.apache.org/jira/browse/PDFBOX-3764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15981016#comment-15981016
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Petr Slaby commented on PDFBOX-3764:
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The bad news is that the -Dsun.java2d.cmm switch seems to be unofficial (at
least I did not find it in any Oracle documentation) and the KCMS
implementation is likely to disappear completely in one of the future Java
versions. The OpenJDK issue https://bugs.openjdk.java.net/browse/JDK-8041125 is
closed and the comments in it do not give me much hope that the LCMS would get
faster again or that the Oracle/OpenJDK guys would even consider working on its
performance. All very sad... A workaround implementation in PDFBox would be
very welcome because of that.
BTW, the page
http://www.subshell.com/en/subshell/blog/Wrong-Colors-in-Images-with-Java8-100.html
mentioned in the Getting Started Guide does not open.
> 100 times performance hit on creating images
> --------------------------------------------
>
> Key: PDFBOX-3764
> URL: https://issues.apache.org/jira/browse/PDFBOX-3764
> Project: PDFBox
> Issue Type: Improvement
> Components: Rendering
> Affects Versions: 2.0.6
> Reporter: Daniel Persson
> Labels: image, performance
> Attachments: callstack_1.png, callstack_2.png, test.pdf
>
>
> We found that PDFBox creates a better image than poppler so we wanted to
> switch out our environment to get these improvements but found a file that
> took about 10 minutes to create one image with PDFBox and only about 6
> seconds with poppler. So a 100 times performance hit if we where to change.
> I've done some rudimentary profiling on the code and found that most of the
> time is spent in ColorConvertOp.filter. Maybe there is a leaner way to
> implement this in order to get a better result?
> best regards
> Daniel
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