On 25.05.2005 00:16:35 Litton, Tom - CEPM wrote:
> The transcoder to PDF seems to be a bit slow in our system.  It can take
> up to 25 seconds to do the conversion.  Has anyone tried to do
> performance improvements with this transcoder? 

Not me, until now it was exclusively about features when I was working
on it. Maybe you could do some profiling to better determine any
optimization potential. How fast can you convert the same SVG to a
bitmap using Batik?

> Is it documented anywhere?  

I've tried to scratch together on a Wiki page what was easily
extractable from my brain.

http://wiki.apache.org/xmlgraphics-batik/PdfTranscoder

> Are there any transcoding hints that help?  Are there any SVG elements
> that increase the rendering time for this transcoder (or in general)
> that i should avoid?

I've tried to document this on the Wiki page. Generally, text operations
are critical.

> Also, I'm only transcoding part of the image.  Is there a way and would
> it be faster to tell the transcoder to process only the part of the
> image that I want to include in the PDF?

I don't know how Batik does that usually (I'm mostly a FOP guy), but I
know there are no special precautions in the PDF Transcoder code to
avoid unnecessary painting operations. Maybe one of the Batik gurus can
shed some more light on this. I don't know if the PDF Transcoder could
do something here to improve the situation.

I hope that helps a bit.

Jeremias Maerki


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