Appendix A. HotSpot VM Command Line Options of Interest

This appendix contains a listing of Java HotSpot VM (also referred to as HotSpot hereafter) command line options of performance interest and any mentioned within this book, along with a description of each option and when it is most applicable to use it.

Command line options that toggle on or off a feature or attribute of the HotSpot VM have the form -XX:<+|->FeatureName where + indicates enable the feature and - indicates disable the feature.

Command line options that require a numerical value have the form -XX:FeatureName=<n> where n is some numerical value. All command line options that require a numerical value that controls the size of some attribute in kilobytes, megabytes, or gigabytes ...

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