com.hazelcast.internal.diagnostics

Class SlowOperationPlugin

java.lang.Object

com.hazelcast.internal.diagnostics.DiagnosticsPlugin

com.hazelcast.internal.diagnostics.SlowOperationPlugin

public class SlowOperationPlugin
extends DiagnosticsPlugin

A DiagnosticsPlugin that displays the slow executing operations.

For more information see SlowOperationDetector.

Field Summary

Fields

Modifier and Type	Field and Description
static HazelcastProperty	PERIOD_SECONDS The period in seconds the SlowOperationPlugin runs.

Fields inherited from class com.hazelcast.internal.diagnostics.DiagnosticsPlugin

logger

Constructor Summary

Constructors

Constructor and Description
SlowOperationPlugin(NodeEngineImpl nodeEngine)

Method Summary

Modifier and Type	Method and Description
long	getPeriodMillis() Returns the period of executing the monitor in millis.
void	onStart()
void	run(DiagnosticsLogWriter writer)

Methods inherited from class java.lang.Object

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

Field Detail

PERIOD_SECONDS

public static final HazelcastProperty PERIOD_SECONDS

The period in seconds the SlowOperationPlugin runs.

With the slow operation plugin, slow executing operation can be found. This is done by checking on the caller side which operations take a lot of time executing.

This plugin is very cheap to use.

If set to 0, the plugin is disabled.

Constructor Detail

SlowOperationPlugin

public SlowOperationPlugin(NodeEngineImpl nodeEngine)

Method Detail

getPeriodMillis

public long getPeriodMillis()

Description copied from class: DiagnosticsPlugin

Returns the period of executing the monitor in millis.

If a monitor is disabled, 0 is returned.

If a monitor should run only once, a negative value is returned. This is useful for 'static' monitors like the SystemPropertiesPlugin that run at the beginning of a log file but their contents will not change.

Specified by:

getPeriodMillis in class DiagnosticsPlugin

Returns:

the period in millis.

onStart

public void onStart()

Specified by:

onStart in class DiagnosticsPlugin

run

public void run(DiagnosticsLogWriter writer)

Specified by:

run in class DiagnosticsPlugin