Subject: Re: [xsl] XSL-FO to PDF conversion speed From: Graydon <graydon@xxxxxxxxx> Date: Sun, 29 Sep 2013 08:52:57 -0400 |
On Sun, Sep 29, 2013 at 12:46:51PM +0200, Jesper Tverskov scripsit: > Why is the XSL-FO to PDF step so slow! Layout is a hard problem. > We are talking about only two pages of PDF output. I must admit that > those two pages contain a hell of a lot of complex tables. Is that the > problem? > > Is there any way to speed up to XSL-FO to PDF step? > > 1) Would a commercial FO-processor help me out? > > 2) Is there any tutorial around for how to optimize the FO > conversion speed? So far as I know, the only rule is "don't specify anything you don't have to specify". It's otherwise difficult to optimize FO processing -- the actual layout step -- because there may be only one way to express what you want to see, and the whole point is a particular layout. Commercial FO-processors are faster, but not eye-blink fast. Layout, especially of complex tables, goes off into the land of seriously polynomial time very easily. I used to treat a second per page as an acceptable number when dealing with substantial index documents. -- Graydon Saunders XML tools and processes for information delivery. graydon@xxxxxxxxxxxx
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