It'd be great if IBM and Google could contribute that into OpenJDK. Would that collide with project Panama [1] currently under way? (Or maybe that's a goal of the project?).
Also, wasn't that the goal of Azul's ObjectLayout [2]?
If that could make it into the developer's IDE somehow, it'd be awesome. As in, the runtime detects which fields suffer from cache misses, tries a different layout, gathers data; and it all comes as fields being painted shades of blue/red in the IDE. It is one thing to have an optimized JPA object layout, but it is another to only have flat relevant data in the first place. Sort of like a database pushdown optimization through the developer, if you will.
If that could make it into the developer's IDE somehow, it'd be awesome. As in, the runtime detects which fields suffer from cache misses, tries a different layout, gathers data; and it all comes as fields being painted shades of blue/red in the IDE. It is one thing to have an optimized JPA object layout, but it is another to only have flat relevant data in the first place. Sort of like a database pushdown optimization through the developer, if you will.
[1] http://openjdk.java.net/projects/panama/
[2] https://www.azul.com/presentation/objectlayout/