Hi Eric, Does your document contain many large SVG's? If so take a look at Bugzilla #46360. This issue was resolved in rev 997602 of FOP trunk.
Pete On Wed, May 18, 2011 at 5:10 PM, Adrian Cumiskey <adrian.cumis...@gmail.com>wrote: > Hi Eric, > > Fop calculates layout in page sequence chunks, so try breaking up your > pages into chunks of page sequences. Pages should be available for garbage > collection once the page sequence has been rendered. > > Cheers, Adrian. > > On May 18, 2011, at 7:24 AM, Michael Rubin <mru...@thunderhead.com> wrote: > > Just a wild thought. But is there a way you could possibly get the JVM to > garbage collect between each run? Maybe that might free the memory up? > > Thanks. > > -Mike > > On 18/05/11 13:20, Eric Douglas wrote: > > I am using Fop 1.0. > I tried using Fop to transform a single document. When I got a little over > 100 pages my FO file was over 5 MB. The transform crashed with a Java heap > out of memory error. > > I managed to break the input down, as I'm using embedded code generating > the input programmatically, and the PDF output is a lot smaller. > > So I'm currently transforming 10 pages at a time, setting the > initial-page-number to the next sequence (1, 11, 21, etc). > > Then I save all the generated PDFs in memory and merge them using pdfbox. > So far this is working great. > > I tried to do the same thing with the PNGRenderer, just calling a method to > transform 10 pages at a time and save the output images in an array. > > The PNGRenderer is created locally in the method. It should be getting > released when the method ends but the java process never releases any > memory. > > I tested a 90 page report and the memory use was over 1 GB. I tested on > another machine where the memory limit is apparently lower and it crashed on > page 24. > > Everything about the method to render to PNG is the same as the method to > render to PDF aside from the Renderer. > Is there a problem with this renderer or something I could need to do > different? > > > > *Michael Rubin* > > Developer > [image: Thunderhead Logo] [image: Tagline] [image: Triangles] > > *T* > > *F* > > *M* > > *E* > > *W* > > +44 20 8238 7400 > > +44 20 8238 7401 > > > > <mru...@thunderhead.com>mru...@thunderhead.com > www.thunderhead.com > > > > Thunderhead featured in The Sunday Times Profit Track 100 league table of > companies with fastest-growing profits. Click > here<http://www.fasttrack.co.uk/fasttrack/press/pt11-lon.pdf>to read more. > [image: LinkedIn] <http://www.linkedin.com/companies/25033/Thunderhead> > [image: > twitter] <http://twitter.com/Thunderheadon>[image: > RSS]<http://www.thunderhead.com/rss/rss.php>[image: > YouTube] > <http://www.youtube.com/user/ThunderheadOn><http://thunderheadinnovate.wordpress.com/> > [image: > were-hiring] <http://thunderhead.com/about/careers.php> > > The contents of this e-mail are intended for the named addressee only. It > contains information that may be confidential. Unless you are the named > addressee or an authorized designee, you may not copy or use it, or disclose > it to anyone else. If you received it in error please notify us immediately > and then destroy it. > >
