Peter Kessler has been implementing languages and their runtime systems since the late 1970's, when he was an author of the Berkeley Pascal
compiler (and several other Berkeley Unix bits). He then moved to Xerox PARC where he worked on the Cedar language, operating
system, and development environment. Peter has been at Sun since 1990, working on experimental operating systems, distributed
programming, and the Java(TM) platform. He is currently the technical lead for the garbage collector in the HotSpot(TM)
Java virtual machine. He is not an academic garbage collector:
he just likes high-performance multi-threaded systems that have
to work perfectly.