- Close any not needed projects to improve performance - You can clean up a workspace with exporting settings, removing .metadata and import settings and projects easily As the .metadata folder might contain a lot of information (change history, etc), the size of it might grow to a large size if you are using the workspace for a long time, and adding/removing projects frequently. This might slow down eclipse over time. For me it is a good practice to get a clean state back again. What I do then is following: - Export the workspace settings as shown above - Close eclipse - Delete the .metadata folder - Re-open eclipse with that workspace - Re-import the workspace settings