It seems that they published a description of how their algorithm works: http://www.azulsystems.com/sites/default/files/images/c4_paper_acm.pdf http://www.azuls

It seems that they published a description of how their algorithm works: http://www.azulsystems.com/sites/default/files/images/c4_paper_acm.pdf http://www.azulsystems.com/sites/default/files/images/c4_pap... My cursory read of the paper suggests that it increases memory requirements by a factor of 100 over the working set and if it cannot get that much memory, the garbage collection will run slower than a standard garbage collector.