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https://issues.apache.org/jira/browse/PDFBOX-4392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16713909#comment-16713909
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Itai Shaked commented on PDFBOX-4392:
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[~tilman] - As profiling shows there is almost no impact to re-parsing the ICC
profile, I don't think I will continue working on the patch. At most it will
have negligible performance improvement, and it means more code to be
maintained in PDFBox which already exists in the JDK, so I personally don't
think it will be worth it.
What I am thinking of maybe doing is trying to find a way to "predict" whether
LCMS/KCMS will have a problem with the ICC profile, so maybe fallback can be
performed without actually calling `new Color` or other potentially-slow
operations. I am not entirely sure it is possible, but learning more about ICC
profiles was something I've been meaning to do anyway.
If I do manage to find a quick and reliable way to test the validity (in the
sense tested by the lines discussed here) of an ICC profile I will create a new
patch, but perhaps by then it would make sense to create a new issue
altogether.
> PDF completely blow up the RAM on amazon instances
> --------------------------------------------------
>
> Key: PDFBOX-4392
> URL: https://issues.apache.org/jira/browse/PDFBOX-4392
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.12
> Reporter: Oleksandr Skoryi
> Priority: Major
> Fix For: 2.0.14
>
> Attachments: 2f0f8f77-7a85-416d-b5d2-47a07d1416d4_3.pdf,
> 4392-prereadICC.patch
>
>
> Hi all
> The issue is pretty straightforward. I receive a lot of pdfs every day and
> render them. In most of the cases everything is OK, but PDFs which produces
> WARN org.apache.pdfbox.pdmodel.graphics.color.PDICCBased - ICC profile is
> Perceptual, ignoring, treating as Display class
> working super long, and are super memory consumable.
> It takes from 5 to 15 min on m5.large amazon instance. But attached PDF
> completely killed the instance. The java process is just killed by linux
> during processing with no exception in logs.
> So could you please provide explanations what is going on with files with
> WARN message above, and how can I improve the rendering.
>
> Here is my VM options
> -Dorg.apache.pdfbox.rendering.UsePureJavaCMYKConversion=true -Xmx3G -Xms2G
> -Dsun.java2d.cmm=sun.java2d.cmm.kcms.KcmsServiceProvider"
> Also don't hesitate to ask me about more PDF, I have tones of them :D
>
> And also a question, does GPU have influence on rendering?
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