org.spf4j.perf.io

Class OpenFilesSampler

java.lang.Object

org.spf4j.perf.io.OpenFilesSampler

public final class OpenFilesSampler
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	getErrorThreshold()
static String	getLsof()
static long	getMaxNrOpenFiles() Deprecated.
static long	getNrOpenFiles() Deprecated.
static String	getWarnLsofDetail()
static long	getWarnThreshold()
static boolean	isStarted()
static void	start(long sampleTimeMillis)
static void	start(long sampleTimeMillis, boolean shutdownOnError)
static void	start(long sampleTimeMillis, long warnThreshold, long errorThreshold, boolean shutdownOnError)
static void	start(long sampleTimeMillis, long warnThreshold, long errorThreshold, boolean shutdownOnError, int aggTimeMillis)
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 sampleTimeMillis)

start

public static void start(long sampleTimeMillis,
                         boolean shutdownOnError)

getWarnLsofDetail

public static String getWarnLsofDetail()

start

public static void start(long sampleTimeMillis,
                         long warnThreshold,
                         long errorThreshold,
                         boolean shutdownOnError)

start

public static void start(long sampleTimeMillis,
                         long warnThreshold,
                         long errorThreshold,
                         boolean shutdownOnError,
                         int aggTimeMillis)

stop

public static void stop()
                 throws IOException

Throws:

IOException

isStarted

public static boolean isStarted()

getLsof

public static String getLsof()

getMaxNrOpenFiles

@Deprecated
public static long getMaxNrOpenFiles()

Deprecated.

getNrOpenFiles

@Deprecated
public static long getNrOpenFiles()

Deprecated.

getWarnThreshold

public static long getWarnThreshold()

getErrorThreshold

public static long getErrorThreshold()