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jvm parameter conventions -X vs -XX  RSS feed

 
manuel aldana
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hi,

when starting server/app jvm parameters are showing up wiht a leading -X. Sometimes I also see -XX.

What is the jvm-parameter convention -X vs -XX?

thanks.
 
Joe Ess
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* Options that begin with -X are non-standard (not guaranteed to be supported on all VM implementations), and are subject to change without notice in subsequent releases of the JDK.
* Options that are specified with -XX are not stable and are not recommended for casual use. These options are subject to change without notice.

Java HotSpot VM Options
 
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