My Eclipse was getting slower and slower over time. Tips I found on the Internet did not help. What I did is completely deleted my workspace, created new one and reimported all
Sometimes due to Physical Memory issue it cant build the workspace. So To remove Memory issues update @
eclipse.ini
file as below
-Xms512m -Xmx1024m -XX:MaxPermSize=1024m --launcher.XXMaxPermSize 1024m