This week i have discover that mylyn project is include in most of eclipse bundle. But this plugin make eclipse starve for memory… By the menu window->preferenc-> Show heap status, i have discover the acceleo bundle starting with a need of 180 MO with nothing opened. With a common eclipse (Pydev, WTP), my eclipse has an heap status of 35MO. With my project of doing a Plone2.5 generator with Acceleo, i want to have a UML editor (papyrus or topcased ?) and acceleo running perfectly.
You can find some pages about this memory problem with mylyn: http://www.ibm.com/developerworks/java/library/j-mylyn2/
So start your eclipse, take a cofee, and then go to help-> software and update -> manage configuration. Desactive all mylyn integration plugin to be able to desactive mylyn plugin itself. Then restart your eclipse, it s ok.
With the acceleo bundle i have desactivate subversive, and mylyn, i m now around 40MO on the heap status. Now i m ready to make UML diagrams.