Take my advice, don't get started on profiling and optimization unless you have several days worth of time to waste. =P
The biggest CPU sucker in ktechlab is the linear algebra engine. The reason it gets called so much is that non-linear things such as transistors need to iterate in order to converge on their instantaneous DC conditions... I found several ways to reduce the number of times QMatrix[] is called... GCC doesn't seem to be inlining it, that could also be a fairly substantial boost. The biggest gain was to convert a copy (double) loop into a memcpy, that was a very substantial gain! The most obvious way to get even more out of it is to convert to use liboil... =P I don't think that's appropriate at this juncture... I fixed a few memory leaks too but a substantial number of trivial leaks remain, (I added comments in the code to point them out...) I would like to set up a design meeting sometime next week where people can argue over what direction the KDE4 port should go... (even though kde4 looks like the biggest regression in open source history...) -- New president: Here we go again... Chemistry.com: A total rip-off. Powers are not rights. ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Ktechlab-devel mailing list Ktechlab-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ktechlab-devel
