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

-Xthr

-Xthr:<suboptions>

-Xthr:<AdaptSpin|noAdaptSpin>

This tuning option is available to test whether performance optimizations are negatively impacting an application. See Testing JVM optimizations.

-Xthr:minimizeUserCPU

Minimizes user-mode CPU usage in thread synchronization where possible. The reduction in CPU usage might be a trade-off in exchange for lower performance.

-Xthr:<secondarySpinForObjectMonitors|noSecondarySpinForObjectMonitors>

This tuning option is available to test whether performance optimizations are negatively impacting an application. See Testing JVM optimizations.

Parent: JVM command-line options

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