info.magnolia.monitoring

Class SystemMonitor

java.lang.Object

info.magnolia.monitoring.SystemMonitor

public class SystemMonitor
extends Object

Allows to monitor the system.

Field Summary

Fields

Modifier and Type	Field and Description
static long	BYTE_TO_MEGABYTE_FACTOR
static String	MEMORY_LIMIT_IS_REACHED_STRING_FORMAT
static int	MEMORY_THRESHOLD_IN_MB
static int	MEMORY_THRESHOLD_PERCENTAGE
static String	MEMORY_VALUES_STRING_FORMAT

Constructor Summary

Constructors

Constructor and Description
SystemMonitor()

Method Summary

Modifier and Type	Method and Description
protected boolean	isBelowAllThresholds(long maxMemoryInMb, long totalMemoryInMb, long freeMemoryInMb)
boolean	isMemoryLimitReached() Evaluates whether the memory limit is reached.

Methods inherited from class java.lang.Object

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

Field Detail

MEMORY_LIMIT_IS_REACHED_STRING_FORMAT

public static final String MEMORY_LIMIT_IS_REACHED_STRING_FORMAT

See Also:

Constant Field Values

MEMORY_VALUES_STRING_FORMAT

public static final String MEMORY_VALUES_STRING_FORMAT

See Also:

Constant Field Values

BYTE_TO_MEGABYTE_FACTOR

public static final long BYTE_TO_MEGABYTE_FACTOR

See Also:

Constant Field Values

MEMORY_THRESHOLD_PERCENTAGE

public static final int MEMORY_THRESHOLD_PERCENTAGE

See Also:

Constant Field Values

MEMORY_THRESHOLD_IN_MB

public static final int MEMORY_THRESHOLD_IN_MB

See Also:

Constant Field Values

Constructor Detail

SystemMonitor

public SystemMonitor()

Method Detail

isMemoryLimitReached

public boolean isMemoryLimitReached()

Evaluates whether the memory limit is reached. This is the case when system memory is absolutely below MEMORY_THRESHOLD_IN_MB and relatively below MEMORY_THRESHOLD_PERCENTAGE.

Returns:

whether the memory limit is reached or not.

isBelowAllThresholds

protected boolean isBelowAllThresholds(long maxMemoryInMb,
                                       long totalMemoryInMb,
                                       long freeMemoryInMb)

Parameters:

maxMemoryInMb - maximum amount the JVM can grow to

totalMemoryInMb - current size of the JVM

freeMemoryInMb - amount left of the current size