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Introduction to JRockit JDK

# New Features in BEA JRockit JDK

BEA JRockit JDK represents a incremental step up from previous version of this JDK. BEA JRockit contains many new features designed to improve performance and streamline operation. Note that some features provided in this version of BEA JRockit JDK are non-standard or "experimental." These features, while tested to work with this version of the JDK, are provided as-is and might change at any time.

This section includes information on the following subjects:

- Performance Enhancements

# Performance Enhancements

- Support for Large Pages on x86.

- On Linux it is called Huge Pages. Read documentation about huge pages in kernal source: Documentation/vm/hugetlbpage.txt
- On Windows it is called to lock pages. Read more about lock pages here: http://www.microsoft.com/technet/prodtechnol/windowsserver2003/library/ServerHelp/e72dcdf6-fe17-49dd-a382-02baad31a137.mspx

- Improved register allocation with better result on optimized code and faster results on just-in-time compiled code, both for normal and for debug code.
- Improved code selection on x86 platforms.