Running Twitter services on Graal has been very successful and saved Twitter a lot of money on datacenter cost. In order to save even more we are using our Machine Learning framework called Autotune to tune Graal inlining parameters.
Chris Thalinger is a software engineer working on Java Virtual Machines for over 14 years. His main expertise is in compiler technology with Just-In-Time compilation in particular. Initially being involved with the CACAO and GNU Classpath projects, the focus shifted to OpenJDK as soon as Sun made the JDK open-source. Ever since Chris has worked on the HotSpot JVM at Sun, Oracle and now at Twitter.