title: Do free chunks of memory go to Eden after the compact phase of mark-sweep-compact?
body: <p>As far as I understand there is is a solid space for young objects and a solid space for old objects in the heap. Objects are moved in both areas during the collections, but in the 2nd area, they are also compacted. My question is why they are compacted, what is the freed solid area used for, Eden or new big old objects?</p>