Peter sent me one of his large TIFF images to test with. Thanks, Peter. I used his FO snippet he posted at the beginning of the thread so the firgures below are including Batik into the picture.
The TIFF file: RGB, LZW compression, 1327x3682 pixels, 2.73MB I couldn't see a factor 6 increase of time necessary to process the picture on my Windows XP SP2 except when run inside my profiler but that's due to method instrumentation overhead. The normal runtime effect was far smaller. As you can see I didn't experience slower performance with FOP Trunk/0.95beta compared to 0.94. Here's what I measured (please note that the figures below always refer to the server VM with parallel GC enabled, JVM startup and class loading is included in the times): FOP 0.94 (Commons' TIFF codec) Java 1.4.2: 4.0 sec Java 1.5.0: 3.6 sec Java 6: 3.3 sec Trunk (comparable to 0.95beta, JAI TIFF codec) Java 1.4.2: 2.9 sec Java 1.5.0: 2.9 sec Java 1.6: 2.6 sec When profiled with my YourKit profiler I found two hotspots which are now fixed: http://svn.apache.org/viewvc?rev=647537&view=rev http://svn.apache.org/viewvc?rev=647536&view=rev The latter hotspot in Commons is only triggered when my new TIFF image loader is used. 0.95 Branch (including my performance fixes, JAI TIFF codec): Java 1.4.2: 2.2 sec Java 1.5.0: 2.0 sec Java 6.0: 1.9 sec 0.95 Branch (including my performance fixes, internal TIFF codec): Java 1.4.2: 2.7 sec Java 1.5.0: 2.4 sec Java 6.0: 2.3 sec Just as an experiment I've converted the TIFF image to JPEG with relatively low compression so there are no serious artifacts. The resulting JPEG image is 425KB. If performance is important and the images are suitable (fotos), JPEG can be an option since the images don't have to be decoded for PDF production. Here's the result: 0.95 Branch (including my performance fixes): Java 6.0: 1.1 sec On 12.04.2008 11:37:01 Jeremias Maerki wrote: <snip/> > If Peter sends me his test TIFF I'll profile the problem. A factor 6 > increase is certainly not to be expected. <snip/> Jeremias Maerki --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
