Dear all, I recently profiled my swing application (Aspro2: http://www.jmmc.fr/aspro) using the netbeans profiler (OpenJDK8 / linux x64) and in contrary to Oracle JDK, it consumes a lot of memory in sun.java2D.pisces code as int[] or float[] arrays: - Helpers.widenArray : 25Mb - Renderer<init>: 75 Mb (from AAShapePipe.draw)
Here are few profiler screenshots: http://jmmc.fr/~bourgesl/share/pisces2D/ Aspro2 screenshot illustrating the plot that consumes a lot of memory: http://jmmc.fr/~bourgesl/share/pisces2D/Capture-Aspro2.png My application uses jfreechart that calls graphics2D.draw(shape) where shape is always a rectangle / line with antialiasing enabled. Several questions: - Why is the antialiasing performed in java code ? I mean is it possible to use OpenGL or XRender pipelines to perform such tasks ? - Is there some docs explaining the java2D code and the different implementations (openjdk, oracle, xrender, opengl ...) ? - how could I help improving that code (Renderer ...) to avoid so many array allocations / resizing (array sizing or using a thread context object to reuse allocated int[] / float[] arrays) ? Does somebody work on that topic ? has some ideas to optimize that code (pisces) ? Regards, Laurent
