com.atlassian.confluence.status.service.systeminfo

Class MemoryInfo

java.lang.Object

com.atlassian.confluence.status.service.systeminfo.MemoryInfo

public class MemoryInfo
extends Object

Simple bean encapsulating information about the system's memory usage. The usage information is calculated when the bean is instantiated (and not recalculated after)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MemoryInfo.Bytes Represents some number of bytes.

Constructor Summary

Constructors

Constructor and Description
MemoryInfo() Construct a new MemoryInfo containing details of Confluence's memory usage at time of instantiation.

Method Summary

Modifier and Type	Method and Description
MemoryInfo.Bytes	getAllocatedHeap() Gets the amount of heap currently allocated by the JVM.
MemoryInfo.Bytes	getAvailableHeap() Gets the total heap still available to be used.
MemoryInfo.Bytes	getAvailableNonHeap()
MemoryInfo.Bytes	getAvailablePermGen() Deprecated. since 5.10 because PermGen no longer exists in Java8
MemoryInfo.Bytes	getFreeAllocatedHeap() Gets the amount of currently allocated heap that has not been used.
MemoryInfo.Bytes	getMaxHeap() Gets the maximum amount of heap the JVM is will allow to be allocated.
MemoryInfo.Bytes	getMaxNonHeap()
MemoryInfo.Bytes	getMaxPermGen() Deprecated. since 5.10 because PermGen no longer exists in Java8
MemoryInfo.Bytes	getUsedHeap() Gets the amount of heap currently used by the JVM.
MemoryInfo.Bytes	getUsedNonHeap()
MemoryInfo.Bytes	getUsedPermGen() Deprecated. since 5.10 because PermGen no longer exists in Java8
MemoryInfo.Bytes	getXms()
MemoryInfo.Bytes	getXmx()

Methods inherited from class java.lang.Object

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

Constructor Detail

MemoryInfo

public MemoryInfo()

Construct a new MemoryInfo containing details of Confluence's memory usage at time of instantiation.

Method Detail

getAvailableHeap

public MemoryInfo.Bytes getAvailableHeap()

Gets the total heap still available to be used. This includes heap that the JVM is configured to use but has not yet allocated. To most users this will be the "free" memory.

Returns:

get the total heap still available to be used

getFreeAllocatedHeap

public MemoryInfo.Bytes getFreeAllocatedHeap()

Gets the amount of currently allocated heap that has not been used. This is the value that Confluence used to report as "free memory".

Returns:

the amount of allocated heap that is not used

getMaxHeap

public MemoryInfo.Bytes getMaxHeap()

Gets the maximum amount of heap the JVM is will allow to be allocated. This should be close to (but probably not exactly the same as) the JVM's -Xmx setting.

Returns:

the maximum heap for the JVM, or -1 if there is no limit.

getAllocatedHeap

public MemoryInfo.Bytes getAllocatedHeap()

Gets the amount of heap currently allocated by the JVM. This is the value that Confluence used to report as "total memory".

Returns:

the amount of heap currently allocated by the JVM.

getUsedHeap

public MemoryInfo.Bytes getUsedHeap()

Gets the amount of heap currently used by the JVM.

Returns:

the amount of heap currently used by the JVM

getMaxPermGen

@Deprecated
public MemoryInfo.Bytes getMaxPermGen()

Deprecated. since 5.10 because PermGen no longer exists in Java8

Gets the maximum permanent generation memory allocation. This should be close to (or even the same as) the -XXMaxPermSize setting

Returns:

the maximum permanent generation size

getUsedPermGen

@Deprecated
public MemoryInfo.Bytes getUsedPermGen()

Deprecated. since 5.10 because PermGen no longer exists in Java8

Gets the currently used permanent generation memory.

Returns:

the currently used permanent generation memory.

getAvailablePermGen

@Deprecated
public MemoryInfo.Bytes getAvailablePermGen()

Deprecated. since 5.10 because PermGen no longer exists in Java8

Gets the currently available permanent generation memory.

Returns:

the available permanent generation memory.

getMaxNonHeap

public MemoryInfo.Bytes getMaxNonHeap()

Returns:

the maximum non-heap memory

Since:

7.1

getUsedNonHeap

public MemoryInfo.Bytes getUsedNonHeap()

Returns:

the used non-heap memory

Since:

7.1

getAvailableNonHeap

public MemoryInfo.Bytes getAvailableNonHeap()

Returns:

the available non-heap. -1 if there is no limit.

Since:

7.1

getXmx

public MemoryInfo.Bytes getXmx()

Returns:

the maximum heap memory allocation

Since:

7.1

getXms

public MemoryInfo.Bytes getXms()

Returns:

the minimum heap memory allocation size

Since:

7.1