My current project is about building an embedded software using C++ on a ARM board. Due to some reasons we had to use use Eclipse as we are to use a proprietary tool chain plug-in of the editor. Anyhow, eclipse was too slow to proceed development work fast where deadline is always yelling at the ear and release are very frequent. I started use geany, my favorite editor, for writing codes and just used Eclipse to build the project.
Tonight, I got some relax time(you know 36 degree centigrade is cooler than 40 degree centigrade ! ) and played with eclipse settings. I just stopped the indexer and some other auto completion options — the result was out of expectation ! Eclipse became fast enough to code on 
Besides, for source code I like courier font, so I did not miss to change that too.
Now, if you are interested, go to Window->Preferences->C/C++ and set off the content assistant and indexer. Bingo… now you have a faster Eclipse.
