sk.baka.webvm.analyzer
Class HistorySample

java.lang.Object
  sk.baka.webvm.analyzer.HistorySample

public final class HistorySample
extends Object

Holds history data for a single time unit.

Author:

Martin Vysny

Field Summary

int	classesLoaded Count of classes currently loaded in the VM.
int	cpuIOUsage Shows the host OS CPU IO usage.
int	cpuJavaUsage Shows the owner java process CPU usage.
int	cpuUsage Shows the host OS CPU usage.
int	daemonThreadCount Current count of daemon threads.
int	gcCpuUsage Returns GC CPU Usage.
MemoryUsage[]	memPoolUsage The memory usage list, indexed according to the value of the POOL_* constants.
static int	POOL_HEAP The heap usage.
static int	POOL_NON_HEAP The non-heap usage, may be null.
static int	POOL_PHYS_MEM The host OS physical memory, may be null.
static int	POOL_SWAP The swap, may be null.
long	sampleTime The time this sample was taken.
int	threadCount Returns current count of all threads.
ThreadInfo[]	threads A thread dump.

Constructor Summary

HistorySample(int gcCpuUsage, int cpuOSUsage, int cpuJavaUsage, int cpuIOUsage)
Creates new history sample bean.

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

gcCpuUsage

public final int gcCpuUsage

Returns GC CPU Usage.

sampleTime

public final long sampleTime

The time this sample was taken.

POOL_HEAP

public static final int POOL_HEAP

The heap usage.

See Also:

Constant Field Values

POOL_NON_HEAP

public static final int POOL_NON_HEAP

The non-heap usage, may be null.

See Also:

Constant Field Values

POOL_PHYS_MEM

public static final int POOL_PHYS_MEM

The host OS physical memory, may be null.

See Also:

Constant Field Values

POOL_SWAP

public static final int POOL_SWAP

The swap, may be null.

See Also:

Constant Field Values

memPoolUsage

public final MemoryUsage[] memPoolUsage

The memory usage list, indexed according to the value of the POOL_* constants.

threads

public final ThreadInfo[] threads

A thread dump. Does not contain any stacktraces. Never null.

classesLoaded

public final int classesLoaded

Count of classes currently loaded in the VM.

daemonThreadCount

public final int daemonThreadCount

Current count of daemon threads.

threadCount

public final int threadCount

Returns current count of all threads.

cpuUsage

public final int cpuUsage

Shows the host OS CPU usage. A value of 0..100, 0 when not supported.

cpuJavaUsage

public final int cpuJavaUsage

Shows the owner java process CPU usage. A value of 0..100, 0 when not supported.

cpuIOUsage

public final int cpuIOUsage

Shows the host OS CPU IO usage. A value of 0..100, 0 when not supported.

Constructor Detail

HistorySample

public HistorySample(int gcCpuUsage,
                     int cpuOSUsage,
                     int cpuJavaUsage,
                     int cpuIOUsage)

Creates new history sample bean.

Parameters:

gcCpuUsage - average CPU usage of GC for this time slice in percent.

cpuOSUsage - Shows the host OS CPU usage. A value of 0..100, 0 when not supported.

cpuJavaUsage - Shows the owner java process CPU usage. A value of 0..100, 0 when not supported.

cpuIOUsage - Shows the host OS CPU IO usage. A value of 0..100, 0 when not supported.