Am 26.10.2018 um 09:25 schrieb Vassallo, Fabio:
Good morning.
During the startup of our application, PDFBox gives us this advice:
2018-10-24 12:50:16 INFO
org.apache.pdfbox.pdmodel.graphics.color.PDDeviceRGB suggestKCMS - To
get higher rendering speed on java 8 oder 9,
2018-10-24 12:50:16 INFO
org.apache.pdfbox.pdmodel.graphics.color.PDDeviceRGB suggestKCMS -
use the option -Dsun.java2d.cmm=sun.java2d.cmm.kcms.KcmsServiceProvider
2018-10-24 12:50:16 INFO
org.apache.pdfbox.pdmodel.graphics.color.PDDeviceRGB suggestKCMS -
or call System.setProperty("sun.java2d.cmm",
"sun.java2d.cmm.kcms.KcmsServiceProvider")
I cannot find good documentation about this option.
Could you, please, so kind to explain when it should be set (my
concern is not to degrade performance in other part of the application).
What you saw is the documentation. It should be set for higher rendering
speed. Rendering = convert to image. This is a java workaround to avoid
the newer slower LCMS. CMS = color management system. However the
slowness has partly disappeared in the latest jdk8 version => test for
yourself. There will be no difference for simple PDFs, e.g. invoices,
but there may be differences for advanced PDFs, e.g. illustrations in
advertising.
See also
https://blog.idrsolutions.com/2014/04/color-performance-change-newer-java-releases/
https://bugs.openjdk.java.net/browse/JDK-8041125
Tilman
Thank you in advance,
Fabio
*Fabio Vassallo*
Product Development (CIS)
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