org.spf4j.perf.memory

Class GCUsageSampler

java.lang.Object

org.spf4j.perf.memory.GCUsageSampler

public final class GCUsageSampler
extends Object

This class allows you to poll and recordAt to a file the heap commited and heap used for your java process. start data recording by calling the startMemoryUsageSampling method, stop the data recording by calling the method: startMemoryUsageSampling.

Author:

zoly

Method Summary

Modifier and Type	Method and Description
static long	getGCTime()
static long	getGCTime(List<GarbageCollectorMXBean> gcBeans)
static long	getGCTimeDiff(List<GarbageCollectorMXBean> gcBeans, gnu.trove.map.TObjectLongMap lastValues)
static boolean	isStarted()
static void	start(int sampleTime)
static void	stop()

Methods inherited from class java.lang.Object

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

Method Detail

start

public static void start(int sampleTime)

stop

public static void stop()

getGCTimeDiff

public static long getGCTimeDiff(List<GarbageCollectorMXBean> gcBeans,
                                 gnu.trove.map.TObjectLongMap lastValues)

getGCTime

public static long getGCTime(List<GarbageCollectorMXBean> gcBeans)

getGCTime

public static long getGCTime()

isStarted

public static boolean isStarted()