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dexterous/JVM Options (java -help; java -X)

Created June 29, 2016 14:50
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JVM (HotSpot) settings & options
Raw
JVM Options (java -help; java -X)
Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
(to execute a jar file)
where options include:
-d32 use a 32-bit data model if available
-d64 use a 64-bit data model if available
-server to select the "server" VM
The default VM is server.
-cp <class search path of directories and zip/jar files>
-classpath <class search path of directories and zip/jar files>
A ; separated list of directories, JAR archives,
and ZIP archives to search for class files.
-D<name>=<value>
set a system property
-verbose:[class|gc|jni]
enable verbose output
-version print product version and exit
-version:<value>
Warning: this feature is deprecated and will be removed
in a future release.
require the specified version to run
-showversion print product version and continue
-jre-restrict-search | -no-jre-restrict-search
Warning: this feature is deprecated and will be removed
in a future release.
include/exclude user private JREs in the version search
-? -help print this help message
-X print help on non-standard options
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
enable assertions with specified granularity
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
disable assertions with specified granularity
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions
-agentlib:<libname>[=<options>]
load native agent library <libname>, e.g. -agentlib:hprof
see also, -agentlib:jdwp=help and -agentlib:hprof=help
-agentpath:<pathname>[=<options>]
load native agent library by full pathname
-javaagent:<jarpath>[=<options>]
load Java programming language agent, see java.lang.instrument
-splash:<imagepath>
show splash screen with specified image
-Xmixed mixed mode execution (default)
-Xint interpreted mode execution only
-Xbootclasspath:<directories and zip/jar files separated by ;>
set search path for bootstrap classes and resources
-Xbootclasspath/a:<directories and zip/jar files separated by ;>
append to end of bootstrap class path
-Xbootclasspath/p:<directories and zip/jar files separated by ;>
prepend in front of bootstrap class path
-Xdiag show additional diagnostic messages
-Xnoclassgc disable class garbage collection
-Xincgc enable incremental garbage collection
-Xloggc:<file> log GC status to a file with time stamps
-Xbatch disable background compilation
-Xms<size> set initial Java heap size
-Xmx<size> set maximum Java heap size
-Xss<size> set java thread stack size
-Xprof output cpu profiling data
-Xfuture enable strictest checks, anticipating future default
-Xrs reduce use of OS signals by Java/VM (see documentation)
-Xcheck:jni perform additional checks for JNI functions
-Xshare:off do not attempt to use shared class data
-Xshare:auto use shared class data if possible (default)
-Xshare:on require using shared class data, otherwise fail.
-XshowSettings show all settings and continue
-XshowSettings:all
show all settings and continue
-XshowSettings:vm show all vm related settings and continue
-XshowSettings:properties
show all property settings and continue
-XshowSettings:locale
show all locale related settings and continue
The -X options are non-standard and subject to change without notice.
See http://www.oracle.com/technetwork/java/javase/documentation/index.html for more details.
Raw
JVM Settings (java -XshowSettings:all -version)
VM settings:
Max. Heap Size (Estimated): 1.71G
Ergonomics Machine Class: client
Using VM: Java HotSpot(TM) 64-Bit Server VM
Property settings:
awt.toolkit = sun.awt.windows.WToolkit
file.encoding = Cp1252
file.encoding.pkg = sun.io
file.separator = \
java.awt.graphicsenv = sun.awt.Win32GraphicsEnvironment
java.awt.printerjob = sun.awt.windows.WPrinterJob
java.class.path = .
java.class.version = 52.0
java.endorsed.dirs = C:\Program Files\Java\jre1.8.0_92\lib\endorsed
java.ext.dirs = C:\Program Files\Java\jre1.8.0_92\lib\ext
C:\Windows\Sun\Java\lib\ext
java.home = C:\Program Files\Java\jre1.8.0_92
java.io.tmpdir = C:\Users\DEXTER~1\AppData\Local\Temp\
java.library.path = C:\Program Files\Java\jre1.8.0_92\bin
C:\Windows\Sun\Java\bin
C:\Windows\system32
C:\Windows
C:\Program Files (x86)\Python27\
C:\Program Files (x86)\Python27\Scripts
C:\Program Files\Java\jre1.8.0_92\bin
C:\ProgramData\Oracle\Java\javapath
C:\Windows\system32
C:\Windows
C:\Windows\System32\Wbem
C:\Windows\System32\WindowsPowerShell\v1.0\
C:\Program Files\Common Files\Microsoft Shared\Windows Live
C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live
C:\Program Files (x86)\Intel\iCLS Client\
C:\Program Files\Intel\iCLS Client\
C:\Program Files\Common Files\Intel\WirelessCommon\
C:\Program Files\ThinkPad\Bluetooth Software\
C:\Program Files\ThinkPad\Bluetooth Software\syswow64
C:\Program Files\Intel\WiFi\bin\
C:\Program Files\Intel\Intel(R) Management Engine Components\DAL
C:\Program Files\Intel\Intel(R) Management Engine Components\IPT
C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL
C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT
C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x86
C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x64
C:\Program Files (x86)\Windows Live\Shared
C:\Program Files (x86)\Lenovo\Access Connections\
C:\Program Files (x86)\Symantec\VIP Access Client\
C:\Program Files (x86)\Common Files\Lenovo
C:\Program Files\Common Files\Lenovo
C:\Program Files\Microsoft SQL Server\110\Tools\Binn\
C:\Program Files\Console2
C:\SWTOOLS\ReadyApps
C:\Windows\System32\WindowsPowerShell\v1.0\
C:\Program Files (x86)\Skype\Phone\
C:\Program Files\OpenVPN\bin
C:\Program Files (x86)\curl-7.44.0\I386\
C:\Program Files\jq\
C:\Progra~1\Vault
C:\Program Files (x86)\HashiCorp\Vagrant\bin
C:\Program Files (x86)\PuTTY
C:\Program Files (x86)\MinGHC-7.8.3\switch
C:\Program Files (x86)\MinGHC-7.8.3\msys-1.0.1\bin
C:\Program Files (x86)\MinGHC-7.8.3\ghc-7.8.3\mingw\bin
C:\Program Files (x86)\MinGHC-7.8.3\ghc-7.8.3\bin
C:\Program Files (x86)\MinGHC-7.8.3\bin
C:\Users\dexterous\AppData\Roaming\cabal\bin
C:\Users\dexterous\bin
.
java.runtime.name = Java(TM) SE Runtime Environment
java.runtime.version = 1.8.0_92-b14
java.specification.name = Java Platform API Specification
java.specification.vendor = Oracle Corporation
java.specification.version = 1.8
java.vendor = Oracle Corporation
java.vendor.url = http://java.oracle.com/
java.vendor.url.bug = http://bugreport.sun.com/bugreport/
java.version = 1.8.0_92
java.vm.info = mixed mode
java.vm.name = Java HotSpot(TM) 64-Bit Server VM
java.vm.specification.name = Java Virtual Machine Specification
java.vm.specification.vendor = Oracle Corporation
java.vm.specification.version = 1.8
java.vm.vendor = Oracle Corporation
java.vm.version = 25.92-b14
line.separator = \r \n
os.arch = amd64
os.name = Windows 7
os.version = 6.1
path.separator = ;
sun.arch.data.model = 64
sun.boot.class.path = C:\Program Files\Java\jre1.8.0_92\lib\resources.jar
C:\Program Files\Java\jre1.8.0_92\lib\rt.jar
C:\Program Files\Java\jre1.8.0_92\lib\sunrsasign.jar
C:\Program Files\Java\jre1.8.0_92\lib\jsse.jar
C:\Program Files\Java\jre1.8.0_92\lib\jce.jar
C:\Program Files\Java\jre1.8.0_92\lib\charsets.jar
C:\Program Files\Java\jre1.8.0_92\lib\jfr.jar
C:\Program Files\Java\jre1.8.0_92\classes
sun.boot.library.path = C:\Program Files\Java\jre1.8.0_92\bin
sun.cpu.endian = little
sun.cpu.isalist = amd64
sun.desktop = windows
sun.io.unicode.encoding = UnicodeLittle
sun.java.launcher = SUN_STANDARD
sun.jnu.encoding = Cp1252
sun.management.compiler = HotSpot 64-Bit Tiered Compilers
sun.os.patch.level = Service Pack 1
sun.stdout.encoding = cp437
user.country = US
user.dir = C:\Users\dexterous
user.home = C:\Users\dexterous
user.language = en
user.name = dexterous
user.script =
user.timezone =
user.variant =
Locale settings:
default locale = English
default display locale = English (United States)
default format locale = English (United States)
available locales = , ar, ar_AE, ar_BH, ar_DZ, ar_EG, ar_IQ, ar_JO,
ar_KW, ar_LB, ar_LY, ar_MA, ar_OM, ar_QA, ar_SA, ar_SD,
ar_SY, ar_TN, ar_YE, be, be_BY, bg, bg_BG, ca,
ca_ES, cs, cs_CZ, da, da_DK, de, de_AT, de_CH,
de_DE, de_GR, de_LU, el, el_CY, el_GR, en, en_AU,
en_CA, en_GB, en_IE, en_IN, en_MT, en_NZ, en_PH, en_SG,
en_US, en_ZA, es, es_AR, es_BO, es_CL, es_CO, es_CR,
es_CU, es_DO, es_EC, es_ES, es_GT, es_HN, es_MX, es_NI,
es_PA, es_PE, es_PR, es_PY, es_SV, es_US, es_UY, es_VE,
et, et_EE, fi, fi_FI, fr, fr_BE, fr_CA, fr_CH,
fr_FR, fr_LU, ga, ga_IE, hi, hi_IN, hr, hr_HR,
hu, hu_HU, in, in_ID, is, is_IS, it, it_CH,
it_IT, iw, iw_IL, ja, ja_JP, ja_JP_JP_#u-ca-japanese, ko, ko_KR,
lt, lt_LT, lv, lv_LV, mk, mk_MK, ms, ms_MY,
mt, mt_MT, nl, nl_BE, nl_NL, no, no_NO, no_NO_NY,
pl, pl_PL, pt, pt_BR, pt_PT, ro, ro_RO, ru,
ru_RU, sk, sk_SK, sl, sl_SI, sq, sq_AL, sr,
sr_BA, sr_BA_#Latn, sr_CS, sr_ME, sr_ME_#Latn, sr_RS, sr_RS_#Latn, sr__#Latn,
sv, sv_SE, th, th_TH, th_TH_TH_#u-nu-thai, tr, tr_TR, uk,
uk_UA, vi, vi_VN, zh, zh_CN, zh_HK, zh_SG, zh_TW
java version "1.8.0_92"
Java(TM) SE Runtime Environment (build 1.8.0_92-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.92-b14, mixed mode)
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