https://issues.apache.org/bugzilla/show_bug.cgi?id=48013
Summary: Image processing makes FOP really slow
Product: Fop
Version: 0.95
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: normal
Priority: P2
Component: general
AssignedTo: [email protected]
ReportedBy: [email protected]
Created an attachment (id=24385)
--> (https://issues.apache.org/bugzilla/attachment.cgi?id=24385)
image testing file
In investigating a problem in the display of PNG images in FOP, I discovered
that image processing was really slow.
Examining the code in a debugger the surprise is that the source of slowness is
not the rendering of the image (which is done through Java’s JAI) but in the
steps leading up to the rendering of the image.
For a simple FO page, with a single PNG image FOP takes 90 seconds. Remove the
image and FOP takes 1 second. RenderX takes a second as well with our without
the image.
So the addition of a single image to an FO page results in extreme slowness –
two orders of magnitude slower than RenderX XEP.
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