They're not mainstream, but IBM's mainframes since Z14 have something called the Guarded Storage Facility which provides hardware assisted Java Garbage Collecti

They're not mainstream, but IBM's mainframes since Z14 have something called the Guarded Storage Facility which provides hardware assisted Java Garbage Collection[0], and Oracle's M8 has some hardware acceleration for Java "Streams"[1]. [0] https://www.ibm.com/support/pages/pause-less-garbage-collection-java-ibm-z https://www.ibm.com/support/pages/pause-less-garbage-collect... [1] https://www.oracle.com/a/ocom/docs/sparc-t8-m8-server-architecture.pdf https://www.oracle.com/a/ocom/docs/sparc-t8-m8-server-archit...