hotspot/src/share/vm/Xusage.txt
author coleenp
Sun, 13 Apr 2008 17:43:42 -0400
changeset 360 21d113ecbf6a
parent 1 489c9b5090e2
child 27625 07829380b8cd
permissions -rw-r--r--
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
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    -Xmixed           mixed mode execution (default)
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    -Xint             interpreted mode execution only
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    -Xbootclasspath:<directories and zip/jar files separated by ;>
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                      set search path for bootstrap classes and resources
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    -Xbootclasspath/a:<directories and zip/jar files separated by ;>
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                      append to end of bootstrap class path
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    -Xbootclasspath/p:<directories and zip/jar files separated by ;>
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                      prepend in front of bootstrap class path
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    -Xnoclassgc       disable class garbage collection
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    -Xincgc           enable incremental garbage collection
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    -Xloggc:<file>    log GC status to a file with time stamps
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    -Xbatch           disable background compilation
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    -Xms<size>        set initial Java heap size
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    -Xmx<size>        set maximum Java heap size
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    -Xss<size>        set java thread stack size
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    -Xprof            output cpu profiling data
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    -Xfuture          enable strictest checks, anticipating future default
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    -Xrs              reduce use of OS signals by Java/VM (see documentation)
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    -Xcheck:jni       perform additional checks for JNI functions
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    -Xshare:off	      do not attempt to use shared class data
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    -Xshare:auto      use shared class data if possible (default)
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    -Xshare:on	      require using shared class data, otherwise fail.
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The -X options are non-standard and subject to change without notice.