org.droolsassert.util

Class PerfStat

java.lang.Object

org.droolsassert.util.PerfStat

public class PerfStat
extends Object

Performance statistic per type (optional) and name. Exposed via MBean server to monitor in real-time with default 4s aggregation time (jvisualvm mbean charts refresh interval). Output statistic from this VM or deliver serializable and merge from several VMs.

 private PerfStat methodPerf = new PerfStat("type", "name") 
 ...
 
     public void myMethod() {
         methodPerf.start();
         ...
         methodPerf.stop();
     }
 }
 

See Also:

start(), stop(), getPerfStat(), StopWatch

Constructor Summary

Constructors

Constructor and Description
PerfStat(String name)
PerfStat(String name, long aggregationPeriodMs)
PerfStat(String type, String name)
PerfStat(String type, String name, long aggregationPeriodMs)

Method Summary

Modifier and Type	Method and Description
protected void	finalize()
static long	getDefaultAggregationPeriodMs()
static String	getJmxDomain()
static TreeMap<String,TreeMap<String,StatImpl>>	getPerfStat() Performance statistic for all types and names
static Stat	getPerfStat(String name) Performance statistic for name (if type was not used)
static Stat	getPerfStat(String type, String name) Performance statistic for type and name
Stat	getStat()
org.apache.commons.lang3.time.StopWatch	getStopWatch()
static void	merge(Map<String,Map<String,StatImpl>> rhsStatsByType) You may want to merge performance statistic from other JVMs
void	reset() Reset statistic
static void	resetAll() Reset statistic for all types and names
static void	setDefaultAggregationPeriodMs(long defaultAggregationPeriodMs)
static void	setJmxDomain(String jmxDomain)
PerfStat	start() Start to measure execution time for current thread. Reset sample (period) values if aggregation time threshold passed over.
long	stop() Stop to measure execution time for current thread, update performance statistic for the name. If stop was not executed for some reason and then start will be called again by the same thread then current leap will be counted as failed.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

PerfStat

public PerfStat(String name)

PerfStat

public PerfStat(String type,
                String name)

PerfStat

public PerfStat(String name,
                long aggregationPeriodMs)

PerfStat

public PerfStat(String type,
                String name,
                long aggregationPeriodMs)

Method Detail

getJmxDomain

public static String getJmxDomain()

setJmxDomain

public static void setJmxDomain(String jmxDomain)

getDefaultAggregationPeriodMs

public static long getDefaultAggregationPeriodMs()

setDefaultAggregationPeriodMs

public static void setDefaultAggregationPeriodMs(long defaultAggregationPeriodMs)

getPerfStat

public static Stat getPerfStat(String name)

Performance statistic for name (if type was not used)

Parameters:

name -

getPerfStat

public static Stat getPerfStat(String type,
                               String name)

Performance statistic for type and name

Parameters:

name -

getPerfStat

public static TreeMap<String,TreeMap<String,StatImpl>> getPerfStat()

Performance statistic for all types and names

merge

public static void merge(Map<String,Map<String,StatImpl>> rhsStatsByType)

You may want to merge performance statistic from other JVMs

resetAll

public static void resetAll()

Reset statistic for all types and names

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable

start

public PerfStat start()

Start to measure execution time for current thread.
Reset sample (period) values if aggregation time threshold passed over.

stop

public long stop()

Stop to measure execution time for current thread, update performance statistic for the name.
If stop was not executed for some reason and then start will be called again by the same thread then current leap will be counted as failed.

reset

public void reset()

Reset statistic

getStopWatch

public org.apache.commons.lang3.time.StopWatch getStopWatch()

getStat

public Stat getStat()

toString

public String toString()

Overrides:

toString in class Object