WSJVMStats (IBM WebSphere Application Server, Release 9.0)

```
public interface WSJVMStats
```
WebSphere JVM stats interface. JVM stats are structured as follows in the PMI tree:

<server>
|
|__JVM Runtime
  |
  |__Garbage Collection #
  |__Monitor #
  |__Thread #
  |__Object #

# indicates performance data from JVMPI

StatDescriptor is used to locate and access particular Stats in the PMI tree.
Example:
1. StatDescriptor that represents the Garbage collection data: new StatDescriptor (new String[] {WSJVMStats.NAME, WSJVMStats.GC});
2. StatDescriptor that represents the JVM runtime data: new StatDescriptor (new String[] {WSJVMStats.NAME});

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`cpuUsage` The cpuUsage of the JVM(CountStatistic).
`static int`	`FreeMemory` Free memory in JVM run time (CountStatistic).
`static java.lang.String`	`GC` Stats name of the Garbage Collection group
`static int`	`GCCount` Number of garbage collection calls (CountStatistic).
`static int`	`GCIntervalTime` Average time (ms) between garbage collections (TimeStatistic).
`static int`	`GCTime` Average duration (ms) of a garbage collection (TimeStatistic).
`static int`	`HeapSize` Total memory in JVM run time (BoundedRangeStatistic).
`static java.lang.String`	`Monitor` Stats name of the Monitor group
`static java.lang.String`	`NAME` Stats name of the JVM runtime
`static java.lang.String`	`Object` Stats name of the Object group
`static int`	`ObjectAllocateCount` Number of objects allocated in heap (CountStatistic).
`static int`	`ObjectFreedCount` Number of objects freed in heap (CountStatistic).
`static int`	`ObjectMovedCount` Number of objects in heap (CountStatistic).
`static java.lang.String`	`Thread` Stats name of the Thread group
`static int`	`ThreadEndedCount` Number of threads ended (CountStatistic).
`static int`	`ThreadStartedCount` Number of threads started (CountStatistic).
`static int`	`UpTime` The amount of time (ms) the JVM is running (CountStatistic).
`static int`	`UsedMemory` Used memory in JVM run time (CountStatistic).
`static int`	`WaitForLockTime` Average time (ms) that a thread waits for a lock (TimeStatistic).
`static int`	`WaitsForLockCount` Number of times that a thread waits for a lock (CountStatistic).

- Field Detail
  - NAME
```
static final java.lang.String NAME
```
    Stats name of the JVM runtime
    
    See Also:
    Constant Field Values
  - GC
```
static final java.lang.String GC
```
    Stats name of the Garbage Collection group
    
    See Also:
    Constant Field Values
  - Monitor
```
static final java.lang.String Monitor
```
    Stats name of the Monitor group
    
    See Also:
    Constant Field Values
  - Thread
```
static final java.lang.String Thread
```
    Stats name of the Thread group
    
    See Also:
    Constant Field Values
  - Object
```
static final java.lang.String Object
```
    Stats name of the Object group
    
    See Also:
    Constant Field Values
  - HeapSize
```
static final int HeapSize
```
    Total memory in JVM run time (BoundedRangeStatistic).
    
    See Also:
    Constant Field Values
  - FreeMemory
```
static final int FreeMemory
```
    Free memory in JVM run time (CountStatistic).
    
    See Also:
    Constant Field Values
  - UsedMemory
```
static final int UsedMemory
```
    Used memory in JVM run time (CountStatistic).
    
    See Also:
    Constant Field Values
  - UpTime
```
static final int UpTime
```
    The amount of time (ms) the JVM is running (CountStatistic).
    
    See Also:
    Constant Field Values
  - cpuUsage
```
static final int cpuUsage
```
    The cpuUsage of the JVM(CountStatistic).
    
    See Also:
    Constant Field Values
  - GCCount
```
static final int GCCount
```
    Number of garbage collection calls (CountStatistic). This counter is available only when JVMPI is enabled.
    
    See Also:
    Constant Field Values
  - GCIntervalTime
```
static final int GCIntervalTime
```
    Average time (ms) between garbage collections (TimeStatistic). This counter is available only when JVMPI is enabled.
    
    See Also:
    Constant Field Values
  - GCTime
```
static final int GCTime
```
    Average duration (ms) of a garbage collection (TimeStatistic). This counter is available only when JVMPI is enabled.
    
    See Also:
    Constant Field Values
  - ObjectAllocateCount
```
static final int ObjectAllocateCount
```
    Number of objects allocated in heap (CountStatistic). This counter is available only when JVMPI is enabled.
    
    See Also:
    Constant Field Values
  - ObjectFreedCount
```
static final int ObjectFreedCount
```
    Number of objects freed in heap (CountStatistic). This counter is available only when JVMPI is enabled.
    
    See Also:
    Constant Field Values
  - ObjectMovedCount
```
static final int ObjectMovedCount
```
    Number of objects in heap (CountStatistic). This counter is available only when JVMPI is enabled.
    
    See Also:
    Constant Field Values
  - ThreadStartedCount
```
static final int ThreadStartedCount
```
    Number of threads started (CountStatistic). This counter is available only when JVMPI is enabled.
    
    See Also:
    Constant Field Values
  - ThreadEndedCount
```
static final int ThreadEndedCount
```
    Number of threads ended (CountStatistic). This counter is available only when JVMPI is enabled.
    
    See Also:
    Constant Field Values
  - WaitsForLockCount
```
static final int WaitsForLockCount
```
    Number of times that a thread waits for a lock (CountStatistic). This counter is available only when JVMPI is enabled.
    
    See Also:
    Constant Field Values
  - WaitForLockTime
```
static final int WaitForLockTime
```
    Average time (ms) that a thread waits for a lock (TimeStatistic). This counter is available only when JVMPI is enabled.
    
    See Also:
    Constant Field Values

NAME

GC

Monitor

Thread

Object

HeapSize

FreeMemory

UsedMemory

UpTime

cpuUsage

GCCount

GCIntervalTime

GCTime

ObjectAllocateCount

ObjectFreedCount

ObjectMovedCount

ThreadStartedCount

ThreadEndedCount

WaitsForLockCount

WaitForLockTime