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https://issues.apache.org/jira/browse/PDFBOX-4041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16309930#comment-16309930
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Tilman Hausherr commented on PDFBOX-4041:
-----------------------------------------
I ran your program and had it do a few loops without trouble in release mode
with the trunk. I set {{-Xmx250m
-Dsun.java2d.cmm=sun.java2d.cmm.kcms.KcmsServiceProvider
-Dorg.apache.pdfbox.rendering.UsePureJavaCMYKConversion=true}}. {{-Xmx250m}} is
a pretty low value IMHO, I use {{-Xmx2g}} for my tests.
Maybe you had some troubles in your production environment, and then thought
that what you saw in profiling was the cause?
{quote}
in my production environment the memory is not released for a very long time
(some time hours)
{quote}
Are you using some individual settings for the gc in production? What jdk are
you using? I am using 1.8.0_151 on windows 7.
> Memory Leak while converting pdf to images
> ------------------------------------------
>
> Key: PDFBOX-4041
> URL: https://issues.apache.org/jira/browse/PDFBOX-4041
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.7
> Reporter: Ajit
> Attachments: File2_5Mb.pdf, PDFBOX-4041_MemProfile.png,
> PDFConverter.java, heap.jpg, output.txt
>
>
> I am observing memory leak in PDF to images conversion simple program. I
> realise the PDF that I am converting is bit bigger in size.
> Check the heap image and you will see that leak is happening even though I
> have flushed the buffered image and set it to null explicitly. I have also
> closed the document too.
> !heap.jpg|thumbnail! If you notice the image, the process was running at 2
> GBs in only two runs. I am not able to attach the heap, because of its bigger
> size. But note the image at the bottom and you will see that BufferedImage is
> taking about 500 MBs.
> I have also provided the source code (few lines) and hoping I haven't done
> any stupid mistake.
> * I have gone through getting started
> [https://pdfbox.apache.org/2.0/getting-started.html] and set
> -Dsun.java2d.cmm=sun.java2d.cmm.kcms.KcmsServiceProvider
> -Dorg.apache.pdfbox.rendering.UsePureJavaCMYKConversion=true the options. It
> does not help much
> * Maven Dependencies - pdfbox-tools, jai-imageio-core, jai-imageio-jpeg2000,
> levigo-jbig2-imageio
> There are some debug messages related to ScratchBuffer, I searched about it
> and it seems it is harmless. I came across the bug PDFBOX-3388. From the
> comments, It seems it is relevant but harmless.
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