Announcing the new HD Cookbook Profiler!
A new tool has just been added to the HD cookbook arsenal! Jaya and I with the help of MX have developed a tool that lets you do execution-time profiling of BD-J code on commercial BD-Live players. We've used it to analyze production BD-J code, and so far have been very pleased with the quality of the results we've gotten. The tool works by sending UDP packets from the player to a PC connected over a LAN, and then using the high-resolution system clock of the PC to timestamp the packets.
Check out https://hdcookbook.dev.java.net/profiler.html for a more complete description (with pictures!). The tool itself can be found in /AuthoringTools/profiler.