Hello, One more performance improvement: https://bugs.freedesktop.org/show_bug.cgi?id=8315
The change is to make ImageStream::getLine() use buffered i/o. For certain kind of images it gives 10-25% speed improvement in rendering page. It also shows that virtual getChar() is very expensive. Before the change, FlateStream::getChar() and ImageStream::getLine() were 2 most expensive functions. After the change, ImageStream::getLine() dropped to position 17 and FlateStream::readSome() (which replaced FlateStream::getChar()) to position 16. And if someone is interested in improving the speed of this scenario even futher, now the most expensive function is Splash::fillImageMask() and 3rd most expensive is _ftol2_pentium4 (called from Splash::fillImageMask()) so improving fillImageMask() would give the biggest boost. -- kjk _______________________________________________ poppler mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/poppler
