We’ve recently been working on a Coldfusion upgrade for some of our clients, moving serveral servers from version 7 to 8. We’ve known for some time that CF8 runs much faster than CF7 and earlier versions (see the ColdFusion 8 performance whitepaper for details), but Coldfusion 8 in it’s default configuration has been held back from it’s potential full speed because of a bug in the default Sun 1.6 JVM. The problem mostly affects start up time, but can periodically impact the a running application.
The accepted approach to this problem was to roll back the JVM to version 1.5, however Sun recently released update 10 to the 1.6 JVM (as a release candidate) and this has solved the problem.
If you are running Coldfusion 8, or thinking about moving to it in the near future, make sure you update your JVM.
