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+jvm
+===
+
+Check the JVM profile
+
+### Usage
+
+```
+$ jvm
+ CATEGORY            INFO
+------------------------------------------------------------------------------------------------------------------------------------
+
+ RUNTIME              MACHINE-NAME             hellodeMacBook-Air.local
+                      JVM-START-TIME           2015-12-23 10:54:18
+                      MANAGEMENT-SPEC-VERSION  1.2
+                      SPEC-NAME                Java Virtual Machine Specification
+                      SPEC-VENDOR              Oracle Corporation
+                      SPEC-VERSION             1.8
+                      VM-NAME                  Java HotSpot(TM) 64-Bit Server VM
+                      VM-VENDOR                Oracle Corporation
+                      VM-VERSION               25.60-b23
+                      INPUT-ARGUMENTS          -Xbootclasspath/a:/Users/hello/.jenv/versions/1.8/lib/tools.jar
+                                               -Djava.util.logging.config.file=/Users/hello/code/java/crash/packaging/target/
+                                               conf/logging.properties
+
+                      CLASS-PATH               /Users/hello/.jenv/versions/1.8/lib/tools.jar:/Users/hello/code/java/cras
+                                               h/packaging/target/bin/crash.cli-1.3.2-SNAPSHOT.jar::/Users/hello/code/java/cr
+                                               ash/packaging/target/lib/bcpkix-jdk15on-1.51.jar:/Users/hello/code/java/crash/
+                                               packaging/target/lib/bcprov-jdk15on-1.51.jar:/Users/hello/code/java/crash/pack
+                                               aging/target/lib/crash.connectors.ssh-1.3.2-SNAPSHOT-standalone.jar:/Users/hengyuna
+                                               bc/code/java/crash/packaging/target/lib/crash.connectors.telnet-1.3.2-SNAPSHOT-stan
+                                               dalone.jar:/Users/hello/code/java/crash/packaging/target/lib/crash.shell-1.3.2
+                                               -SNAPSHOT.jar:/Users/hello/code/java/crash/packaging/target/lib/groovy-all-1.8
+                                               .9.jar:/Users/hello/code/java/crash/packaging/target/lib/ivy-2.2.0.jar
+                      BOOT-CLASS-PATH          /Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/resources.j
+                                               ar:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/rt.jar:/
+                                               Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/sunrsasign.j
+                                               ar:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/jsse.jar
+                                               :/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/jce.jar:/L
+                                               ibrary/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/charsets.jar:
+                                               /Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/jfr.jar:/Li
+                                               brary/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/classes:/Users/hen
+                                               gyunabc/.jenv/versions/1.8/lib/tools.jar
+                      LIBRARY-PATH             /Users/hello/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library
+                                               /Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.
+
+ CLASS-LOADING        LOADED-CLASS-COUNT        4264
+                      TOTAL-LOADED-CLASS-COUNT  4264
+                      UNLOADED-CLASS-COUNT      0
+                      IS-VERBOSE                false
+
+ COMPILATION          NAME                HotSpot 64-Bit Tiered Compilers
+                      TOTAL-COMPILE-TIME  5145(ms)
+
+ GARBAGE-COLLECTORS   PS Scavenge   6/74(ms)
+                      [count/time]
+                      PS MarkSweep  1/64(ms)
+                      [count/time]
+
+ MEMORY-MANAGERS      CodeCacheManager   Code Cache
+
+                      Metaspace Manager  Metaspace
+                                         Compressed Class Space
+
+                      PS Scavenge        PS Eden Space
+                                         PS Survivor Space
+
+                      PS MarkSweep       PS Eden Space
+                                         PS Survivor Space
+                                         PS Old Gen
+
+
+ MEMORY               HEAP-MEMORY-USAGE          186646528/134217728/1908932608/31245568
+                      [committed/init/max/used]
+                      NO-HEAP-MEMORY-USAGE       35520512/2555904/-1/34584616
+                      [committed/init/max/used]
+                      PENDING-FINALIZE-COUNT     0
+
+ OPERATING-SYSTEM     OS                Mac OS X
+                      ARCH              x86_64
+                      PROCESSORS-COUNT  4
+                      LOAD-AVERAGE      2.328125
+                      VERSION           10.10.5
+
+ THREAD               COUNT          16
+                      DAEMON-COUNT   10
+                      LIVE-COUNT     18
+                      STARTED-COUNT  19
+Affect cost in 2 ms.
+```
+
+### thread-related
+
+* COUNT: the count of active threads 
+* DAEMON-COUNT: the count of active daemon threads
+* LIVE-COUNT: the maximum count of the live threads since JVM starts
+* STARTED-COUNT: the total count of the created threads since JVM starts