> If I can move gigabytes of my data into arrays of structs, then 1) I greatly reduce memory requirements (far fewer pointers), and 2) I greatly reduce the amou

> If I can move gigabytes of my data into arrays of structs, then 1) I greatly reduce memory requirements (far fewer pointers), and 2) I greatly reduce the amount of work that GC has to do. As an aside, and not to say that Valhalla is not needed (I am looking forward to it very much, along with Loom), I’ve recently learned that for many use cases (not all) when you want gigabytes of struct arrays, a bunch of equal-sized primitive arrays, one per struct field, might work even better from memory requirement and cache locality perspective.