For my test, I use an edition with 1000 pages containing for each page :
2 barcodes, 3 littles images, tables, marker.
(Xmx=1000 Mo)
result : FOP 1.0 is slower than FOP 0.20.5
BUT if I use FOP Trunk with intermediate format
(http://xmlgraphics.apache.org/fop/trunk/intermediate.html)
the result is different : process time by using Fop Trunck or Fop 0.20.5
is equals, so it's fine for me.
Philippe Pithon
Le 17/01/2011 18:09, Andreas Delmelle a écrit :
On 17 Jan 2011, at 09:09, Matthias Müller wrote:
Hi Mathias
i finally updated my stylesheets for Fop 1.0 compliance. Now i run into java
heap space errors when rendering large documents (500+ pages, nested tables).
The thing is: with Fop 0.20.5 it works.
It seems that Fop 1.0 needs more memory than its predecessor. Are there any
tweaks? I set the -Xms and -Xmx options to its maximum (1200m).
How much memory FOP 1.0 uses depends heavily on the FO structure.
Are you trying to render one fo:page-sequence of 500+ pages, containing a lot
of nested tables?
If so, then it can very well be that 1.0 is more memory-hungry than 0.20.5.
If the 500+ pages are neatly distributed over page-sequences of around 20
pages, the matter becomes quite different.
On the other hand, one also needs to take into account the fact that 1.0
implements more features. Extra functionality requires extra resources,
obviously, so I would expect /some/ difference.
FWIW: I did a similar test myself once, and a document that required +1GB heap
on 0.20.5 took 'only' 640MB of heap on 1.0 (well, actually 0.94 at the time).
Are there any other specifics you can give us about the document? (e.g. lots of
fo:instream-foreign-objects or other images, forward references to pages
towards the end of the document...)
If it is possible and it contains no confidential information, you can send me
the FO source off-list, and I will have a closer look to see what the options
are, if any, to bring the required amount of memory down.
Regards,
Andreas
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