com.caucho.health.check
Class MemoryTenuredHealthCheck

java.lang.Object
  com.caucho.health.check.AbstractHealthCheck
      com.caucho.env.health.AbstractMemoryHealthCheckImpl
          com.caucho.env.health.MemoryTenuredHealthCheckImpl
              com.caucho.health.check.MemoryTenuredHealthCheck

All Implemented Interfaces:

HealthCheck

@Singleton
@Configurable
@Named
public class MemoryTenuredHealthCheck
extends MemoryTenuredHealthCheckImpl

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

Note: This check will query heap memory for JVMs with no Tenured 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). This can also be configured by setting <memory-free-min >.

Constructor Summary

MemoryTenuredHealthCheck()

Method Summary

protected AbstractHealthCheck	findDelegate(HealthService healthService) Finds and returns any delegate health check.
protected MemoryTenuredHealthCheck	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, getMemoryFreeMin, getMemoryPool, setFreeWarningImpl, setMemoryFreeMinImpl

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

getName, init, isEnabled, setEnabled, setName, start, stop, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

MemoryTenuredHealthCheck

public MemoryTenuredHealthCheck()

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 MemoryTenuredHealthCheck getDelegate()

Overrides:

getDelegate in class AbstractHealthCheck