util

Class CpuLoad

java.lang.Object

util.CpuLoad

public class CpuLoad
extends Object

Provides methods to do non-GemFire work until cpu active is within a specified range.

Since:

5.0

Field Summary

Fields

Modifier and Type	Field and Description
protected static CpuLoad	cpuLoad
protected static HydraThreadLocal	numWorkThreads
protected static long	workThreadSleepTime

Constructor Summary

Constructors

Constructor and Description
CpuLoad()

Method Summary

Modifier and Type	Method and Description
void	doNonGemFireWork() Start number of worker threads specified by numWorkThreads CPU load and continue running until end of test.
static void	doNonGemFireWorkTask() Hydra task to start worker threads required to reach requested CPU load.
static double	getMeanCpuActive(long startTime, long endTime) Returns the average CPU used on the local host during the specified time interval.
protected void	initNonGemFireWork() Determines number of worker threads required to reach requested CPU load.
static void	initNonGemFireWorkTask() Hydra task to initialize number of worker threads required to reach requested CPU load.
protected static com.gemstone.gemfire.LogWriter	log() Gets the log writer.

Methods inherited from class java.lang.Object

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

Field Detail

numWorkThreads

protected static HydraThreadLocal numWorkThreads

cpuLoad

protected static CpuLoad cpuLoad

workThreadSleepTime

protected static final long workThreadSleepTime

Constructor Detail

CpuLoad

public CpuLoad()

Method Detail

initNonGemFireWorkTask

public static void initNonGemFireWorkTask()

Hydra task to initialize number of worker threads required to reach requested CPU load.

Since:

5.0

initNonGemFireWork

protected void initNonGemFireWork()

Determines number of worker threads required to reach requested CPU load.

Since:

5.0

doNonGemFireWorkTask

public static void doNonGemFireWorkTask()

Hydra task to start worker threads required to reach requested CPU load.

Since:

5.0

doNonGemFireWork

public void doNonGemFireWork()

Start number of worker threads specified by numWorkThreads CPU load and continue running until end of test.

Since:

5.0

getMeanCpuActive

public static double getMeanCpuActive(long startTime,
                                      long endTime)

Returns the average CPU used on the local host during the specified time interval.

Parameters:

startTime - start of time interval for CPU active stats

endTime - end of time interval for CPU active stats

Since:

5.0

log

protected static com.gemstone.gemfire.LogWriter log()

Gets the log writer.