IBM User Guide for Java V7 on Windows > Reference > Command-line options > JVM command-line options

-Xlockword

Test whether performance optimizations are negatively impacting an application.

-Xlockword:<options>

-Xlockword:[mode=all|mode=default]

See Testing JVM optimizations.

-Xlockword:nolockword=<class_name>

This option removes the lockword from object instances of the class <class_name>, reducing the space required for these objects. However, this action might have an adverse effect on synchronization for those objects. You should not use this option unless you are directed to by IBM service.

Parent: JVM command-line options

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