I running TeeChart on Linux without running X11. Wenn i use PieSeries i get this Exception. Caused by: java.awt.HeadlessException: No X11 DISPLAY variable was set, but this program performed an operation which requires it. at sun.awt.HeadlessToolkit.getScreenSize(HeadlessToolkit.java:261) at com.ste...

My findings:
- TeeChart has, as expected, no problem with JAI ImageIO
- since ImageExportFormat uses ImageIO.getImageWritersByFormatName(fileExtension) the JAI PNG writer is automatically picked up once JAI is installed
- even with the native libs the performance gain is minor (<1s)

While profiling our reporting solution I noticed that a significant amount of time is "lost" in com.sun.imageio.plugins.png.PNGImageWriter.write(IIOMetadata, IIOImage, ImageWriteParam) which is called from com.steema.teechart.exports.ImageExportFormat.save(ImageOutputStream) I was wondering whether ...