Java could get a smaller object header, thus improving memory usage, under a proposal being floated in the OpenJDK open source Java community this week. Known as Project Lilliput and led by Red ...

Minimize Java object header overhead In Java, objects in memory don’t come for free. In addition to the payload, every object uses extra memory for JVM headers.

Performance & Runtime: Compact Object Headers: Reduced object header size for better memory usage. Late Barrier Extension for G1: Optimized G1 garbage collector.