com.bigdata.counters.linux

Class StatisticsCollectorForLinux

java.lang.Object

com.bigdata.counters.AbstractStatisticsCollector

com.bigdata.counters.linux.StatisticsCollectorForLinux

All Implemented Interfaces:

ICounterSetAccess, IStatisticsCollector

public class StatisticsCollectorForLinux
extends AbstractStatisticsCollector

Collection of host performance data using vmstat and sysstat suite.

Version:

$Id$

Author:

Bryan Thompson

See Also:

http://pagesperso-orange.fr/sebastien.godard/

Nested Class Summary

Nested classes/interfaces inherited from class com.bigdata.counters.AbstractStatisticsCollector

AbstractStatisticsCollector.Options

Field Summary

Fields

Modifier and Type	Field and Description
protected static KernelVersion	kernelVersion The Linux KernelVersion.
protected static int	pid The process identifier for this process (the JVM).
protected PIDStatCollector	pidstat reports on process performance counters (CPU, MEM, IO).
protected String	processName The name of the process (or more typically its service UUID) whose per-process performance counters are to be collected.
protected SarCpuUtilizationCollector	sar1 Reports on the host CPU utilization (these data are also available using vmstat).
protected VMStatCollector	vmstat Reports on the host page faults, swap space and can report CPU utilization.

Fields inherited from class com.bigdata.counters.AbstractStatisticsCollector

fullyQualifiedHostName, hostPathPrefix, interval, log, ps

Constructor Summary

Constructors

Constructor and Description
StatisticsCollectorForLinux(int interval, String processName)

Method Summary

Methods

Modifier and Type	Method and Description
CounterSet	getCounters() Return the counter hierarchy.
void	start() Start collecting host performance data -- must be extended by the concrete subclass.
void	stop() Stop collecting host performance data -- must be extended by the concrete subclass.

Methods inherited from class com.bigdata.counters.AbstractStatisticsCollector

addBasicServiceOrClientCounters, addGarbageCollectorMXBeanCounters, addMemoryPoolMXBeanCounters, addServiceProperties, getInterval, getMemoryCounterSet, getProcessName, installShutdownHook, kb2b, main, newInstance

Methods inherited from class java.lang.Object

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

Field Detail

pid

protected static int pid

The process identifier for this process (the JVM).

kernelVersion

protected static KernelVersion kernelVersion

The Linux KernelVersion.

processName

protected final String processName

The name of the process (or more typically its service UUID) whose per-process performance counters are to be collected.

sar1

protected SarCpuUtilizationCollector sar1

Reports on the host CPU utilization (these data are also available using vmstat).

vmstat

protected VMStatCollector vmstat

Reports on the host page faults, swap space and can report CPU utilization.

pidstat

protected PIDStatCollector pidstat

reports on process performance counters (CPU, MEM, IO).

Constructor Detail

StatisticsCollectorForLinux

public StatisticsCollectorForLinux(int interval,
                           String processName)

Parameters:

interval - The interval at which the performance counters will be collected in seconds.

processName - The name of the process (or more typically its service UUID) whose per-process performance counters are to be collected.

Method Detail

start

public void start()

Description copied from class: AbstractStatisticsCollector

Start collecting host performance data -- must be extended by the concrete subclass.

Specified by:

start in interface IStatisticsCollector

Overrides:

start in class AbstractStatisticsCollector

stop

public void stop()

Description copied from class: AbstractStatisticsCollector

Stop collecting host performance data -- must be extended by the concrete subclass.

Specified by:

stop in interface IStatisticsCollector

Overrides:

stop in class AbstractStatisticsCollector

getCounters

public CounterSet getCounters()

Description copied from class: AbstractStatisticsCollector

Return the counter hierarchy. The returned hierarchy only includes those counters whose values are available from the JVM. This collection is normally augmented with platform specific performance counters collected using an AbstractProcessCollector.

Note: Subclasses MUST extend this method to initialize their own counters. TODO Why does this use the older synchronized pattern with a shared AbstractStatisticsCollector.countersRoot object rather than returning a new object per request? Check assumptions in the scale-out and local journal code bases for this.

Specified by:

getCounters in interface ICounterSetAccess

Overrides:

getCounters in class AbstractStatisticsCollector