com.caucho.health.check

Class MemoryPermGenHealthCheck

java.lang.Object

com.caucho.health.check.AbstractHealthCheck

com.caucho.env.health.AbstractMemoryHealthCheckImpl

com.caucho.env.health.MemoryTenuredHealthCheckImpl

com.caucho.env.health.MemoryPermGenHealthCheckImpl

com.caucho.health.check.MemoryPermGenHealthCheck

All Implemented Interfaces:

HealthCheck

@Singleton
 @Configurable
 @Named
public class MemoryPermGenHealthCheck
extends MemoryPermGenHealthCheckImpl

Monitors the amount of free memory in the PermGen pool. Requests a garbage collection if memory falls too low.

Note: This check does not apply to all JVM implementations, and will return UNKNOWN if there is no PermGen pool.

Generates UNKNOWN if memory pool attributes are not available in JMX.

Generates WARNING if free memory is below the warning percentage after a GC (default 1%)

Generates CRITICAL if free memory is below the the minimum after a GC (default 1 meg).

Constructor Summary

Constructors

Constructor and Description
MemoryPermGenHealthCheck()

Method Summary

Modifier and Type	Method and Description
protected AbstractHealthCheck	findDelegate(HealthService healthService) Finds and returns any delegate health check.
protected MemoryPermGenHealthCheck	getDelegate()
void	setFreeWarning(double pFree) Set the warning threshold percentage (default 0.01)
void	setMemoryFreeMin(Bytes memoryMin) Set minimum amount of free memory (default 1m)
void	setObjectName(java.lang.String objectName) Explicitly set the MBean name to query for memory stats

Methods inherited from class com.caucho.env.health.MemoryTenuredHealthCheckImpl

getMemoryUsage, setObjectNameImpl

Methods inherited from class com.caucho.env.health.AbstractMemoryHealthCheckImpl

checkHealth, fail, getMemoryFreeMin, getMemoryPool, ok, setFreeWarningImpl, setMemoryFreeMinImpl

Methods inherited from class com.caucho.health.check.AbstractHealthCheck

getLastResult, getLogPeriod, getName, hasDelegate, init, isEnabled, logResult, setEnabled, setLogPeriod, setName, silenceFor, start, stop, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

MemoryPermGenHealthCheck

public MemoryPermGenHealthCheck()

Method Detail

setMemoryFreeMin

@Configurable
public void setMemoryFreeMin(Bytes memoryMin)

Set minimum amount of free memory (default 1m)

setFreeWarning

@Configurable
public void setFreeWarning(double pFree)

Set the warning threshold percentage (default 0.01)

setObjectName

@Configurable
public void setObjectName(java.lang.String objectName)

Explicitly set the MBean name to query for memory stats

findDelegate

protected AbstractHealthCheck findDelegate(HealthService healthService)

Description copied from class: AbstractHealthCheck

Finds and returns any delegate health check. Used to configure singleton system health checks.

Overrides:

findDelegate in class AbstractHealthCheck

getDelegate

protected MemoryPermGenHealthCheck getDelegate()

Overrides:

getDelegate in class AbstractHealthCheck