How to check JVM settings?



You can use below command to check all detailed settings of JVM on linux as well as windows:

# java -XshowSettings:all

If everything goes well then OUTPUT can be like:

VM settings:
    Max. Heap Size (Estimated): 1.76G
    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_31\lib\endorsed
    java.ext.dirs = C:\Program Files\Java\jre1.8.0_31\lib\ext
        C:\Windows\Sun\Java\lib\ext
    java.home = C:\Program Files\Java\jre1.8.0_31
    java.io.tmpdir = C:\Users\Neosoft\AppData\Local\Temp\
    java.library.path = C:\ProgramData\Oracle\Java\javapath
        C:\Windows\Sun\Java\bin
        C:\Windows\system32
        C:\Windows
        C:\ProgramData\Oracle\Java\javapath
        C:\Windows\system32
        C:\Windows
        C:\Windows\System32\Wbem
        C:\Windows\System32\WindowsPowerShell\v1.0\
        C:\Program Files\MySQL\MySQL Server 5.5\bin
        C:\Program Files (x86)\Windows Live\Shared
        C:\Program Files (x86)\Skype\Phone\
        C:\Program Files\Java\jdk1.8.0_31\bin
        E:\Windows Softwares\maven\apache-maven-3.2.1\bin
        .
    java.runtime.name = Java(TM) SE Runtime Environment
    java.runtime.version = 1.8.0_31-b13
    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_31
    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 = 25.31-b07
    line.separator = \r \n
    os.arch = amd64
    os.name = Windows 8
    os.version = 6.2
    path.separator = ;
    sun.arch.data.model = 64
    sun.boot.class.path = C:\Program Files\Java\jre1.8.0_31\lib\resources.jar
        C:\Program Files\Java\jre1.8.0_31\lib\rt.jar
        C:\Program Files\Java\jre1.8.0_31\lib\sunrsasign.jar
        C:\Program Files\Java\jre1.8.0_31\lib\jsse.jar
        C:\Program Files\Java\jre1.8.0_31\lib\jce.jar
        C:\Program Files\Java\jre1.8.0_31\lib\charsets.jar
        C:\Program Files\Java\jre1.8.0_31\lib\jfr.jar
        C:\Program Files\Java\jre1.8.0_31\classes
    sun.boot.library.path = C:\Program Files\Java\jre1.8.0_31\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 =
    sun.stderr.encoding = cp437
    sun.stdout.encoding = cp437
    user.country = US
    user.dir = C:\Users\Neosoft
    user.home = C:\Users\Neosoft
    user.language = en
    user.name = Neosoft
    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

 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>
                  require the specified version to run
    -showversion  print product version and continue
    -jre-restrict-search | -no-jre-restrict-search
                  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
See http://www.oracle.com/technetwork/java/javase/documentation/index.html for more details.

Comments

Post a Comment

Popular posts from this blog

How to clear cache programmatically in JSP?

By adding below lines in JSP page we can achive this: <%              response.setHeader("Cache-Control","no-cache"); //HTTP 1.1              response.setHeader("Pragma","no-cache"); //HTTP 1.0              response.setDateHeader ("Expires", 0); //prevents caching at the proxy server   %> Other solution is by adding below lines in <head></head> of your JSP page: <meta http-equiv="Pragma" content="no-cache"> <meta http-equiv="Cache-Control" content="no-cache"> <meta http-equiv="Expires" content="Sat, 01 Dec 2001 00:00:00 GMT">
Read more

How to extend Liferay 6.2 session timeout by AJAX call?

There are lot of solutions present on Liferay forum, stackoverflow and many more can be found on google but all are very difficult, not clear and also not working.... So I found a simple solution which is working and I am sharing it with you people, and hope you will find it helpful!!! You just have to add below line to each AJAX call success at client side (in JavaScipt / JQuery / AngularJS). Liferay.Session.extend();
Read more

How to get context path in JQuery?

Suppose you want to get your context path in JS/JQuery on clicking an Button like, In JSP/HTML:- <input type="button" id="myButton"> In JQuery :- $('# myButton ').click(function() { console.log( myC ontextPath ); }); Then you can pass values to JS/JQuery as, <input type="button" id="myButton" myContextPath="${pageContext.request.contextPath}"> Then in JS/JQuery you can write as, $('# myButton ').click(function() {         var  myC ontextPath  = $(this).attr(' myC ontextPath '); console.log( myC ontextPath ); });
Read more