org.spf4j.perf.memory

Class MemoryUsageSampler

java.lang.Object

org.spf4j.perf.memory.MemoryUsageSampler

public final class MemoryUsageSampler
extends Object

This class allows you to poll and recordAt to a file the heap committed 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 void	dumpHeap(String filename, boolean liveObjectOnly)
static com.sun.management.HotSpotDiagnosticMXBean	getHotspotDiagnosticBean()
static boolean	isStarted()
static void	start(int sampleTimeMilis)
static void	start(int sampleTimeMilis, int accumulateIntervalMillis)
static void	start(long sampleTimeMilis)
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(long sampleTimeMilis)

start

public static void start(int sampleTimeMilis)

start

public static void start(int sampleTimeMilis,
                         int accumulateIntervalMillis)

stop

public static void stop()
                 throws IOException

Throws:

IOException

isStarted

public static boolean isStarted()

dumpHeap

public static void dumpHeap(String filename,
                            boolean liveObjectOnly)
                     throws IOException

Throws:

IOException

getHotspotDiagnosticBean

public static com.sun.management.HotSpotDiagnosticMXBean getHotspotDiagnosticBean()