ZGC is available in Java 11 and can handle heaps up to 16TB. @kcondon is interested because it attempts to deal with eventual memory fragmentation due to reclamation for faster allocation on an ongoing basis.

Quick start: -XX:+UseZGC -Xmx<size> -Xlog:gc

More at https://wiki.openjdk.java.net/display/zgc/Main