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annotate src/share/vm/Xusage.txt @ 3979:4dfb2df418f2

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6484982: G1: process references during evacuation pauses Summary: G1 now uses two reference processors - one is used by concurrent marking and the other is used by STW GCs (both full and incremental evacuation pauses). In an evacuation pause, the reference processor is embedded into the closures used to scan objects. Doing so causes causes reference objects to be 'discovered' by the reference processor. At the end of the evacuation pause, these discovered reference objects are processed - preserving (and copying) referent objects (and their reachable graphs) as appropriate. Reviewed-by: ysr, jwilhelm, brutisso, stefank, tonyp
author johnc
date Thu, 22 Sep 2011 10:57:37 -0700
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1 -Xmixed mixed mode execution (default)
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2 -Xint interpreted mode execution only
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3 -Xbootclasspath:<directories and zip/jar files separated by ;>
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4 set search path for bootstrap classes and resources
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5 -Xbootclasspath/a:<directories and zip/jar files separated by ;>
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6 append to end of bootstrap class path
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7 -Xbootclasspath/p:<directories and zip/jar files separated by ;>
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8 prepend in front of bootstrap class path
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9 -Xnoclassgc disable class garbage collection
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10 -Xincgc enable incremental garbage collection
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11 -Xloggc:<file> log GC status to a file with time stamps
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12 -Xbatch disable background compilation
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13 -Xms<size> set initial Java heap size
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14 -Xmx<size> set maximum Java heap size
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15 -Xss<size> set java thread stack size
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16 -Xprof output cpu profiling data
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17 -Xfuture enable strictest checks, anticipating future default
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18 -Xrs reduce use of OS signals by Java/VM (see documentation)
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19 -Xcheck:jni perform additional checks for JNI functions
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20 -Xshare:off do not attempt to use shared class data
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21 -Xshare:auto use shared class data if possible (default)
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22 -Xshare:on require using shared class data, otherwise fail.
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23
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24 The -X options are non-standard and subject to change without notice.