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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (JIRA)" <ji...@apache.org> on 2019/02/24 09:52:00 UTC
[jira] [Commented] (PDFBOX-4296) Question: Performance
[ https://issues.apache.org/jira/browse/PDFBOX-4296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16776197#comment-16776197 ]
Tilman Hausherr commented on PDFBOX-4296:
-----------------------------------------
Hello [~kalaspuffar], could you please rerun the tests you did on
http://mail.openjdk.java.net/pipermail/2d-dev/2018-October/009490.html ? It seems to me that speed of jdk8 with LCMS and jdk11 have improved. Because of that, I wonder if
https://bugs.openjdk.java.net/browse/JDK-8211178
is still needed.
> Question: Performance
> ---------------------
>
> Key: PDFBOX-4296
> URL: https://issues.apache.org/jira/browse/PDFBOX-4296
> Project: PDFBox
> Issue Type: Improvement
> Components: Rendering
> Affects Versions: 2.0.11
> Reporter: Daniel Persson
> Priority: Trivial
> Labels: optimization, performance
>
> Hi Team.
> We use a tool we built using PDFBox to extract text for about 10k pages per day. Then we have another tool to extract images using Poppler.
> We want to use PDFBox for both tasks but sadly we see a performance hit using PDFBox in the order of 3 times.
> Do you have any backlog / technical dept / ideas on how to improve performance?
> We have tried -Dorg.apache.pdfbox.rendering.UsePureJavaCMYKConversion=true and that made image generation much slower.
> We have set System.setProperty("sun.java2d.cmm", "sun.java2d.cmm.kcms.KcmsServiceProvider") in code.
> We use image libraries from twelvemonkeys, pdfbox and the standard jai project.
> I've read in the code that we do double writes for images using transparency which might be a culprit.
> I have been allowed to put some time into the project if we have some solid leads or a roadmap to reach better performance.
> Hope it's okay to track this issue here instead of a question on the mailing list.
> Best regards
> Daniel
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