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https://issues.apache.org/jira/browse/PDFBOX-4392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16711354#comment-16711354
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Itai Shaked commented on PDFBOX-4392:
-------------------------------------
So I looked into it more closely using a profiler (should have done this in the
first place, as it revealed the call to `ensureDisplayProfile` has negligible
performance impact), and it seems lots of time is wasted on the call to `toRGB`
in line 170 of PDICCBased. According to the comment above the call, this is
done to test for bad ICC profiles as described in PDFBOX-1295, PDFBOX-1740 and
PDFBOX-3610. PDFBOX-1740 seems totally unrelated, so perhaps a typo in the
comment? I have tried removing the call, and the files from PDFBOX-1295 and
PDFBOX-3610 both render correctly (even with the call - no exception is
thrown). Furthermore, removing this call cuts render time on the file in this
issue by ~50%.
Could this be an issue with a bug in an older JDK version, and so is no longer
needed? If so - perhaps a test can be added so `toRGB` is only called on known
bad JDK versions?
> 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
> Affects Versions: 2.0.12
> Reporter: Oleksandr Skoryi
> Priority: Major
> Fix For: 2.0.13
>
> 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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