Henri Yandell wrote: > Also, is there a different VM to J9 in the IBM JDK?
Yes. The VM (and JIT) provided in the IBM JDK offering (at least for Linux) is a different one than J9. If you do java -version, you'll see something like IBM J9SE VM (build 2.2, J2RE 1.4.2 IBM J9 2.2 Linux amd64-64 j9xa64142sr1a-20050225 (JIT enabled) for the J9 offering and Classic VM (build 1.4.2, J2RE 1.4.2 IBM build cxia321420-20040626 (JIT enabled: jitc)) for the IBM JDK. -- Karl T [1] http://www-106.ibm.com/developerworks/java/jdk/linux140/