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Java Runtime Monitor & Java Application Monitoring

Java Runtime Monitoring
  • Do you want to know how your Java Runtime Environment is performing?
  • Do you want to monitor thread deadlocks, abnormal memory, CPU consumption and Java Applications?

Monitor Java Applications

ManageEngine Applications Manager's Java Runtime Monitoring provides out-of-the-box remote monitoring and management of the Java platform and of applications that run on it.You can monitor JVM Performance and monitor threads of a production application. The different JVM vendors supported by Applications Manager are Sun JVM, IBM JVM and Oracle JRockit JVM.

Java Runtime Monitoring

You can configure thresholds on various attributes. The instant alarms and notifications help you in taking quick corrective actions though e-mail, SMS, traps and executing custom scripts & MBean Operations. Apart from Availability and response time, Java Runtime monitor tracks the following attributes given below.

Related Monitoring Features
Process Memory Parameters Description
Eden Space (Heap Memory) Pool from which memory is initially allocated for most objects
Survivor Space (Heap Memory) Pool containing objects that have survived garbage collection of eden space.
Tenured Generation (Heap Memory) Pool containing objects that have existed for some time in the survivor space.
Permanent Generation (Non-Heap) Holds all the reflective data of the virtual machine itself, such as class and method objects. With JVMs that use class data sharing, this generation is divided into read-only and read-write areas.
Code Cache (Non-Heap) Memory used for compilation and storage of native code.
Thread Parameters
Live Threads Number of live threads currently running
Daemon Threads Number of daemon threads currently running
Runnable Threads A thread executing in the Java virtual machine is in this state
Blocked Threads A thread that is blocked waiting for a monitor lock is in this state
Waiting Threads A thread that is waiting indefinitely for another thread to perform a particular action is in this state.
Timed waiting Threads A thread that is waiting for another thread to perform an action for up to a specified waiting time is in this state
Total threads started Total number of threads created and also started since the Java virtual machine started
Peak Threads Peak live thread count since the Java virtual machine started or peak was reset
Deadlocked Number of threads that are in deadlock waiting to acquire object monitors
You can also use Applications Manager to monitor and analyse thread dump of a Java Application.
Virtual Memory Parameters
Classes loaded Number of classes loaded
Classes Unloaded Number of classes unloaded
GC time Time taken to perform garbage collection
Compile time Time spent in just-in-time (JIT) compilation
Max file descriptor Maximum permissible open file descriptor. Available only for UNIX.
Open file descriptor Current count of open file descriptors. Available only for UNIX.
Host Memory Parameters
Total Physical Memory Total amount of physical memory in Megabytes
Free Physical Memory The amount of free physical memory in Megabytes
Total Swap Space Total amount of swap space in Megabytes
Committed Virtual Memory The amount of virtual memory that is guaranteed to be available to the running process in Megabytes
Garbage Collector
Time Spent/Min Total number of collections that have occurred
Collections/Min Approximate collection elapsed time in milliseconds
Thread Count Number of threads used for Garbage Collector
Last Start Time Start time of this GC
Last End Time End time of this GC
Memory usage before GC Memory usage of all memory pools at the beginning of this GC
Memory usage after GC Memory usage of all memory pools at the end of this GC
Uptime The uptime of the Java virtual machine
Java Virtual Machine The Java virtual machine implementation name
Vendor The Java virtual machine implementation vendor
Process ID The process identifier is a number used by some operating system kernels to uniquely identify a process
Name The name representing the running Java virtual machine
VM arguments The input arguments passed to the Java virtual machine which does not include the arguments to the main method
Class path The Java class path that is used by the system class loader to search for class files
Library path The Java library path
Library path The boot class path that is used by the bootstrap class loader to search for class files
JIT compiler The name of the Just-in-time (JIT) compiler
Objects Pending for finalization The approximate number of objects for which finalization is pending
Operating System The name of the operating system
Architecture The operating system architecture
Processors The number of processors available to the Java virtual machine
You can also use Applications Manager to monitor JVM Performance and capacity planning.

Java Runtime Monitoring is supported for JRE 1.5 and above. For more information, refer Java Runtime Monitor Online Help.