MX command allows CLI access to MBean attributes and operations.
> java -jar sjk.jar --help mx
[MBean] MBean query and invokation
Usage: mx [options]
Options:
-all, --allMatched
Process all matched MBeans
Default: false
-a, --arguments
Arguments for MBean operation invocation
Default: []
-f, --field, --attribute
MBean attribute
* -b, --bean
MBean name
-mc, --call
Invokes MBean method
Default: false
--commands
Default: false
--csv
Used with --get command, result would be formatted as CSV
Default: false
-mg, --get
Retrieves value of MBean attribute
Default: false
--help
Default: false
-mi, --info
Display metadata for MBean
Default: false
--max-col-width
Table column width threshold for formating tabular data
Default: 40
-op, --operation
MBean operation name to be called
--password
Password for JMX authentication (only for socket connection)
-p, --pid
JVM process PID
--quiet
Avoid non-essential output
Default: false
-ms, --set
Sets value for MBean attribute
Default: false
-s, --socket
Socket address for JMX port (host:port)
--user
User for JMX authentication (only for socket connection)
-v, --value
Value to set to attribute
-X, --verbose
Enable detailed diagnostics
Default: false
This command have 4 sub commands: -mi, -mg, -ms, -mc - exactly one of them could be used at time.
Example:
> java -jar sjk.jar mx -p 6344 -mi -b java.lang:type=Threading
java.lang:type=Threading
sun.management.ThreadImpl
- Information on the management interface of the MBean
(A) ThreadAllocatedMemoryEnabled : boolean - WRITEABLE
(A) ThreadAllocatedMemorySupported : boolean
(A) ThreadCount : int
...
(O) getThreadAllocatedBytes(long p0) : long
(O) getThreadAllocatedBytes(long[] p0) : long[]
(O) getThreadCpuTime(long[] p0) : long[]
...
Example
> java -jar sjk.jar mx -p 6344 -mg -b java.lang:type=Memory -f HeapMemoryUsage
committed: 419037184
init: 134217728
max: 419037184
used: 356566800
Example
> java -jar sjk.jar mx -p 6344 -ms -b java.lang:type=Threading -f ThreadContentionMonitoringEnabled -v true
Example
> java -jar sjk.jar mx -p 6344 -mc -b java.lang:type=Threading -op dumpAllThreads -a false false
blockedCount|blockedTime|inNative|lockInfo |lockName |lockOwnerId|lockOwnerName|lockedMonitors|lockedSynchronizers|stackTrace |suspended|threadId|threadName |threadState |waitedCount|waitedTime
------------+-----------+--------+----------------------------------------+----------------------------------------+-----------+-------------+--------------+-------------------+----------------------------------------+---------+--------+----------------------------------------+-------------+-----------+----------
2 |0 |false |{className=[I,identityHashCode=17460180}|[I@10a6bd4 |-1 |null | | |{className=java.lang.Object,fileName=...|false |87816 |JMX server connection timeout 87816 |TIMED_WAITING|3 |64
3 |0 |false |{className=[I,identityHashCode=19740445}|[I@12d371d |-1 |null | | |{className=java.lang.Object,fileName=...|false |87810 |JMX server connection timeout 87810 |TIMED_WAITING|4 |42312
2 |0 |false |{className=[I,identityHashCode=24995862}|[I@17d6816 |-1 |null | | |{className=java.lang.Object,fileName=...|false |87809 |JMX server connection timeout 87809 |TIMED_WAITING|3 |59808
3 |0 |false |{className=[I,identityHashCode=3979158} |[I@3cb796 |-1 |null | | |{className=java.lang.Object,fileName=...|false |87808 |JMX server connection timeout 87808 |TIMED_WAITING|4 |70314
0 |0 |false |null |null |-1 |null | | |{className=sun.management.ThreadImpl,...|false |87807 |RMI TCP Connection(13)-10.139.211.172 |RUNNABLE |4 |70040
0 |0 |false |{className=org.eclipse.jface.text.rec...|org.eclipse.jface.text.reconciler.Dir...|-1 |null | | |{className=java.lang.Object,fileName=...|false |87794 |org.eclipse.jdt.internal.ui.text.Java...|TIMED_WAITING|371 |187629
417 |59 |false |{className=org.eclipse.core.internal....|org.eclipse.core.internal.jobs.Worker...|-1 |null | | |{className=java.lang.Object,fileName=...|false |87536 |Worker-4474 |TIMED_WAITING|322 |274933
597 |50 |false |{className=org.eclipse.core.internal....|org.eclipse.core.internal.jobs.Worker...|-1 |null | | |{className=java.lang.Object,fileName=...|false |87477 |Worker-4473 |TIMED_WAITING|484 |317778
477 |53 |false |{className=org.eclipse.core.internal....|org.eclipse.core.internal.jobs.Worker...|-1 |null | | |{className=java.lang.Object,fileName=...|false |87442 |Worker-4469 |TIMED_WAITING|567 |328929
0 |0 |false |{className=java.util.concurrent.locks...|java.util.concurrent.locks.AbstractQu...|-1 |null | | |{className=sun.misc.Unsafe,fileName=U...|false |87417 |RMI Scheduler(0) |TIMED_WAITING|25 |587696
0 |0 |true |null |null |-1 |null | | |{className=java.net.PlainSocketImpl,f...|false |87415 |RMI TCP Accept-0 |RUNNABLE |0 |0
2566 |70 |false |{className=org.eclipse.core.internal....|org.eclipse.core.internal.jobs.Worker...|-1 |null | | |{className=java.lang.Object,fileName=...|false |87339 |Worker-4463 |TIMED_WAITING|3554 |624468
0 |0 |false |{className=java.util.Collections$Sync...|java.util.Collections$SynchronizedRan...|-1 |null | | |{className=java.lang.Object,fileName=...|false |86671 |org.eclipse.wst.sse.ui.internal.recon...|TIMED_WAITING|16434 |632622
0 |0 |false |{className=java.util.Collections$Sync...|java.util.Collections$SynchronizedRan...|-1 |null | | |{className=java.lang.Object,fileName=...|false |86670 |org.eclipse.wst.sse.ui.internal.recon...|TIMED_WAITING|16435 |632621
0 |0 |false |{className=java.util.Collections$Sync...|java.util.Collections$SynchronizedRan...|-1 |null | | |{className=java.lang.Object,fileName=...|false |85508 |org.eclipse.wst.sse.ui.internal.recon...|TIMED_WAITING|21430 |632623
0 |0 |false |{className=org.eclipse.jface.text.rec...|org.eclipse.jface.text.reconciler.Dir...|-1 |null | | |{className=java.lang.Object,fileName=...|false |84797 |org.eclipse.jdt.internal.ui.text.Java...|TIMED_WAITING|23241 |632649
86 |2 |false |{className=org.eclipse.jface.text.rec...|org.eclipse.jface.text.reconciler.Dir...|-1 |null | | |{className=java.lang.Object,fileName=...|false |84712 |org.eclipse.jdt.internal.ui.text.Java...|TIMED_WAITING|23460 |631606
...