Package de.uni_mannheim.informatik.dws.melt.matching_eval.profiling

Class MemoryProfiling

java.lang.Object

de.uni_mannheim.informatik.dws.melt.matching_eval.profiling.MemoryProfiling

public class MemoryProfiling
extends Object

Class with helper methods to profile memory usage.

Field Summary

Fields

Modifier and Type	Field	Description
private static final org.slf4j.Logger	LOGGER
private static final Runtime	runtime

Constructor Summary

Constructors

Constructor	Description
MemoryProfiling()

Method Summary

Modifier and Type	Method	Description
static String	humanReadableByteCount(long bytes)
static void	logUsedMemory()	Logs the used memory of the current JVM in a human readable way e.g.
static long	usedMemory()	Returns the used memory in bytes by the current JVM.
static long	usedMemory(boolean callGC)	Returns the used memory in bytes by the current JVM.
static String	usedMemoryHumanReadable()	Returns the used memory of the current JVM in a human readable way e.g.

Methods inherited from class java.lang.Object

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

Field Details

LOGGER

private static final org.slf4j.Logger LOGGER

runtime

private static final Runtime runtime

Constructor Details

MemoryProfiling

public MemoryProfiling()

Method Details

usedMemory

public static long usedMemory(boolean callGC)

Returns the used memory in bytes by the current JVM.

Parameters:

callGC - true, if the garbage collector (GC) should be run first.

Returns:

used memory in bytes by the current JVM

usedMemory

public static long usedMemory()

Returns the used memory in bytes by the current JVM. The garbage collector (GC) is exectuted before the measurement.

Returns:

used memory in bytes by the current JVM

usedMemoryHumanReadable

public static String usedMemoryHumanReadable()

Returns the used memory of the current JVM in a human readable way e.g. 50 MB or 100 GB. The garbage collector (GC) is exectuted before the measurement.

Returns:

used memory of the current JVM in a human readable way

logUsedMemory

public static void logUsedMemory()

Logs the used memory of the current JVM in a human readable way e.g. 50 MB or 100 GB. The garbage collector (GC) is exectuted before the measurement.

humanReadableByteCount

public static String humanReadableByteCount(long bytes)