In eclipse.ini you'll see the JRE VM args. I'd recommend these args which save memory: -server This slows startup time but payoff is greater optimization. -X

In eclipse.ini you'll see the JRE VM args. I'd recommend these args which save memory: -server This slows startup time but payoff is greater optimization. -XX:+AggressiveOpts Flips on a variety of options that increase performance. -XX:MinHeapFreeRatio=1 Lets the JRE give as much RAM as possible back to the OS. -XX:MaxHeapFreeRatio=2 Lets the JRE give as much RAM as possible back to the OS. -XX:+UseSerialGC Old-fashioned 'stops the world' garbage collection, but it's the best GC for guaranteeing least memory usage.