"Rset is a set of fields that include all references from the old gen to the nursery"
"Mark-Copy's first phase marks all live objects, and constructs per-block unidirectional Rsets and count the vol of live data of each block."
"Two advantage arise from using marker rather than mutator construct rsets: 1. precise rsets; 2.no duplicate"
"Because the marker counts the vol of live data, hence it could determine how many blocks can be evacuated in each pass."
"Mark-copy has disadvantages: each full collection scans every object twice, once to mark and once to copy. Marking reuires space for a mark-stack and for Rsets. Each copying pass may require thread sstacks and global data to be rescanned."
"THE GARBAGE COLLECTOR HAS BEEN CALLED. SOME INTERESTING STATISTICS ARE AS FOLLOWS:"