GCModel (GCViewer 1.36 API)

java.lang.Object
- com.tagtraum.perf.gcviewer.model.GCModel

All Implemented Interfaces:

Serializable
```
public class GCModel
extends Object
implements Serializable
```
Collection of GCEvents.

Author:

Hendrik Schreiber

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class GCModel.Format

Nested Classes
Modifier and Type	Class and Description
`static class`	`GCModel.Format`

Constructor Summary

Constructors
Constructor and Description

GCModel()

Constructors
Constructor and Description
`GCModel()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`add(AbstractGCEvent<?> abstractEvent)`
`boolean`	`equals(Object o)`
`AbstractGCEvent<?>`	`get(int index)` Get all types of events in the order they were added to the model.
`DoubleData`	`getCmsInitiatingOccupancyFraction()` Return statistical data about fraction of tenured heap when concurrent collection cycles are started.
`Map<String,DoubleData>`	`getConcurrentEventPauses()`
`Iterator<ConcurrentGCEvent>`	`getConcurrentGCEvents()` Returns an iterator to all concurrent gc events.
`long`	`getCreationTime()`
`RegressionLine`	`getCurrentPostGCSlope()`
`Iterator<AbstractGCEvent<?>>`	`getEvents()` Returns an iterator to all events in the order they were added to the model.
`ZonedDateTime`	`getFirstDateStamp()`
`double`	`getFirstPauseTimeStamp()`
`Optional<Double>`	`getFirstTimeStamp()`
`long`	`getFootprint()`
`IntData`	`getFootprintAfterFullGC()`
`IntData`	`getFootprintAfterGC()`
`GCModel.Format`	`getFormat()`
`long`	`getFreedMemory()`
`IntData`	`getFreedMemoryByFullGC()`
`IntData`	`getFreedMemoryByGC()`
`Map<String,DoubleData>`	`getFullGcEventPauses()`
`Iterator<GCEvent>`	`getFullGCEvents()` Returns an iterator to all full gc events.
`DoubleData`	`getFullGCPause()`
`DoubleData`	`getFullGCPauseInterval()`
`Map<String,DoubleData>`	`getGcEventPauses()`
`Map<String,DoubleData>`	`getGcEventPhases()`
`Iterator<GCEvent>`	`getGCEvents()` Returns an iterator to all garbage collection events (without full gcs / vm operations).
`DoubleData`	`getGCPause()`
`IntData`	`getHeapAllocatedSizes()`
`IntData`	`getHeapUsedSizes()`
`AbstractGCEvent<?>`	`getLastEventAdded()` Returns the event that was last added or `null` if there is none yet.
`long`	`getLastModified()`
`double`	`getLastPauseTimeStamp()`
`DoubleData`	`getPause()`
`DoubleData`	`getPauseInterval()`
`IntData`	`getPermAllocatedSizes()`
`IntData`	`getPermUsedSizes()`
`IntData`	`getPostConcurrentCycleHeapUsedSizes()`
`IntData`	`getPostConcurrentCycleTenuredUsedSizes()`
`RegressionLine`	`getPostFullGCSlope()`
`double`	`getPostGCSlope()`
`IntData`	`getPromotion()`
`RegressionLine`	`getRelativePostFullGCIncrease()`
`DoubleData`	`getRelativePostGCIncrease()`
`double`	`getRunningTime()`
`ZonedDateTime`	`getStartDate()` Best effort calculation of this `GCModel`s start date based on the available information
`Iterator<AbstractGCEvent<?>>`	`getStopTheWorldEvents()` Returns an iterator to all stop the world events (everything that stops the vm to perfom its action - includes vm operations of present).
`IntData`	`getTenuredAllocatedSizes()`
`IntData`	`getTenuredUsedSizes()`
`double`	`getThroughput()`
`URL`	`getURL()`
`Map<String,DoubleData>`	`getVmOperationEventPauses()`
`DoubleData`	`getVmOperationPause()`
`Iterator<AbstractGCEvent<?>>`	`getVmOperationsEvents()` Returns an iterator to all vm operation events.
`IntData`	`getYoungAllocatedSizes()`
`IntData`	`getYoungUsedSizes()`
`boolean`	`hasCorrectTimestamp()`
`boolean`	`hasDateStamp()`
`int`	`hashCode()`
`boolean`	`isDifferent(File otherFile)`
`boolean`	`isDifferent(URL otherURL)`
`void`	`printDetailedInformation()`
`void`	`setFormat(GCModel.Format format)`
`void`	`setURL(URL url)`
`int`	`size()`
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - GCModel
```
public GCModel()
```
- Method Detail
  - getLastModified
```
public long getLastModified()
```
  - getCreationTime
```
public long getCreationTime()
```
  - getURL
```
public URL getURL()
```
  - printDetailedInformation
```
public void printDetailedInformation()
```
  - setURL
```
public void setURL(URL url)
```
  - isDifferent
```
public boolean isDifferent(File otherFile)
```
  - isDifferent
```
public boolean isDifferent(URL otherURL)
```
  - getLastEventAdded
```
public AbstractGCEvent<?> getLastEventAdded()
```
    Returns the event that was last added or null if there is none yet.
    
    Returns:
    
    last event or null
  - getStopTheWorldEvents
```
public Iterator<AbstractGCEvent<?>> getStopTheWorldEvents()
```
    Returns an iterator to all stop the world events (everything that stops the vm to perfom its action - includes vm operations of present).
    
    Returns:
    
    iterator to all stop the world events
  - getGCEvents
```
public Iterator<GCEvent> getGCEvents()
```
    Returns an iterator to all garbage collection events (without full gcs / vm operations).
    
    Returns:
    
    iterator to all gc events (without full gcs).
  - getVmOperationsEvents
```
public Iterator<AbstractGCEvent<?>> getVmOperationsEvents()
```
    Returns an iterator to all vm operation events.
    
    Returns:
    
    iterator to all vm operation events
  - getConcurrentGCEvents
```
public Iterator<ConcurrentGCEvent> getConcurrentGCEvents()
```
    Returns an iterator to all concurrent gc events.
    
    Returns:
    
    iterator to all concurrent gc events.
  - getEvents
```
public Iterator<AbstractGCEvent<?>> getEvents()
```
    Returns an iterator to all events in the order they were added to the model.
    
    Returns:
    
    iterator to all events
  - getFullGCEvents
```
public Iterator<GCEvent> getFullGCEvents()
```
    Returns an iterator to all full gc events.
    
    Returns:
    
    iterator to all full gc events
  - add
```
public void add(AbstractGCEvent<?> abstractEvent)
```
  - size
```
public int size()
```
  - get
```
public AbstractGCEvent<?> get(int index)
```
    Get all types of events in the order they were added to the model.
    
    Parameters:
    
    index - index of event
    
    Returns:
    
    event at index
    
    Throws:
    
    IndexOutOfBoundsException - if index is out of bounds
  - getFullGCPause
```
public DoubleData getFullGCPause()
```
    Returns:
    
    Statistical data about pauses caused by full garbage collections.
  - getFullGCPauseInterval
```
public DoubleData getFullGCPauseInterval()
```
    Returns:
    
    Statistical data about pauses interval between full garbage collections.
  - getGCPause
```
public DoubleData getGCPause()
```
    Returns:
    
    Statistical data about pauses caused by garbage collections (full gcs excluded).
  - getVmOperationPause
```
public DoubleData getVmOperationPause()
```
    Returns:
    
    Statistical data about pauses caused by vm operations other than gc pauses ("application stopped").
  - getPauseInterval
```
public DoubleData getPauseInterval()
```
    Returns:
    
    Interval between gc pauses (full gcs excluded).
  - getCmsInitiatingOccupancyFraction
```
public DoubleData getCmsInitiatingOccupancyFraction()
```
    Return statistical data about fraction of tenured heap when concurrent collection cycles are started.
    
    Returns:
    
    statistical data about tenured heap occupation at start of concurrent collections
  - getRelativePostFullGCIncrease
```
public RegressionLine getRelativePostFullGCIncrease()
```
    Returns:
    
    The increase in memory consumption after a full collection in relation to the amount that was used after the previous full collection.
  - getRelativePostGCIncrease
```
public DoubleData getRelativePostGCIncrease()
```
    Returns:
    
    The increase in memory consumption after a collection in relation to the amount that was used after the previous collection.
  - getPostGCSlope
```
public double getPostGCSlope()
```
    Returns:
    
    The average slope of the regression lines of the memory consumption after a garbage collection in between full garbage collections.
    The unit is kb/s.
  - getCurrentPostGCSlope
```
public RegressionLine getCurrentPostGCSlope()
```
  - getPostFullGCSlope
```
public RegressionLine getPostFullGCSlope()
```
  - getFreedMemoryByGC
```
public IntData getFreedMemoryByGC()
```
    Returns:
    
    Heap memory freed by a (small) garbage collection.
  - getFreedMemoryByFullGC
```
public IntData getFreedMemoryByFullGC()
```
    Returns:
    
    Heap memory freed by a full garbage collection.
  - getFootprintAfterGC
```
public IntData getFootprintAfterGC()
```
    Returns:
    
    Heap memory consumption after a (small) garbage collection.
  - getFootprintAfterFullGC
```
public IntData getFootprintAfterFullGC()
```
    Returns:
    
    Heap memory consumption after a full garbage collection.
  - getPause
```
public DoubleData getPause()
```
    Returns:
    
    Pause in sec.
  - getGcEventPauses
```
public Map<String,DoubleData> getGcEventPauses()
```
  - getGcEventPhases
```
public Map<String,DoubleData> getGcEventPhases()
```
  - getFullGcEventPauses
```
public Map<String,DoubleData> getFullGcEventPauses()
```
  - getVmOperationEventPauses
```
public Map<String,DoubleData> getVmOperationEventPauses()
```
  - getConcurrentEventPauses
```
public Map<String,DoubleData> getConcurrentEventPauses()
```
  - getThroughput
```
public double getThroughput()
```
    Returns:
    
    Throughput in percent.
  - getHeapAllocatedSizes
```
public IntData getHeapAllocatedSizes()
```
    Returns:
    
    max heap allocated for every event
  - getHeapUsedSizes
```
public IntData getHeapUsedSizes()
```
    Returns:
    
    max heap used for every event
  - getPermAllocatedSizes
```
public IntData getPermAllocatedSizes()
```
    Returns:
    
    perm sizes allocated for every event that contained one (only if detailed logging is active and and all spaces were collected)
  - getPermUsedSizes
```
public IntData getPermUsedSizes()
```
    Returns:
    
    perm sizes used for every event that has the information
  - getTenuredAllocatedSizes
```
public IntData getTenuredAllocatedSizes()
```
    Returns:
    
    tenured sizes allocated for every event that contained one (only if detailed logging is active)
  - getTenuredUsedSizes
```
public IntData getTenuredUsedSizes()
```
    Returns:
    
    tenured sizes used for every event that contained one (only if detailed logging is active)
  - getYoungAllocatedSizes
```
public IntData getYoungAllocatedSizes()
```
    Returns:
    
    young sizes allocated for every event that contained one (only if detailed logging is active)
  - getYoungUsedSizes
```
public IntData getYoungUsedSizes()
```
    Returns:
    
    young sizes used for every event that contained one (only if detailed logging is active)
  - getPostConcurrentCycleTenuredUsedSizes
```
public IntData getPostConcurrentCycleTenuredUsedSizes()
```
    Returns:
    
    Sizes of tenured heap (or if not available total heap) immediately after completion of a concurrent cycle.
  - getPostConcurrentCycleHeapUsedSizes
```
public IntData getPostConcurrentCycleHeapUsedSizes()
```
    Returns:
    
    Sizes of heap immediately after completion of a concurrent cycle.
  - getPromotion
```
public IntData getPromotion()
```
    Returns:
    
    promotion information for all young collections (how much memory was promoted to tenured space per young collection?)
  - getFootprint
```
public long getFootprint()
```
    Returns:
    
    Footprint in KB.
  - getRunningTime
```
public double getRunningTime()
```
    Returns:
    
    Running time in sec.
  - getFirstPauseTimeStamp
```
public double getFirstPauseTimeStamp()
```
    Returns:
    
    The timestamp of the first event in the log (which usually is probably never exactly 0)
  - getLastPauseTimeStamp
```
public double getLastPauseTimeStamp()
```
    Returns:
    
    The timestamp of the last event in the log
  - getFreedMemory
```
public long getFreedMemory()
```
    Returns:
    
    Freed memory in KB.
  - getFormat
```
public GCModel.Format getFormat()
```
  - setFormat
```
public void setFormat(GCModel.Format format)
```
  - hasCorrectTimestamp
```
public boolean hasCorrectTimestamp()
```
  - hasDateStamp
```
public boolean hasDateStamp()
```
  - getFirstDateStamp
```
public ZonedDateTime getFirstDateStamp()
```
  - getFirstTimeStamp
```
public Optional<Double> getFirstTimeStamp()
```
  - getStartDate
```
public ZonedDateTime getStartDate()
```
    Best effort calculation of this GCModels start date based on the available information
    
    Returns:
    
    the most probable start date of this GCModel
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object

Class GCModel

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

GCModel

Method Detail

getLastModified

getCreationTime

getURL

printDetailedInformation

setURL

isDifferent

isDifferent

getLastEventAdded

getStopTheWorldEvents

getGCEvents

getVmOperationsEvents

getConcurrentGCEvents

getEvents

getFullGCEvents

add

size

get

getFullGCPause

getFullGCPauseInterval

getGCPause

getVmOperationPause

getPauseInterval

getCmsInitiatingOccupancyFraction

getRelativePostFullGCIncrease

getRelativePostGCIncrease

getPostGCSlope

getCurrentPostGCSlope

getPostFullGCSlope

getFreedMemoryByGC

getFreedMemoryByFullGC

getFootprintAfterGC

getFootprintAfterFullGC

getPause

getGcEventPauses

getGcEventPhases

getFullGcEventPauses

getVmOperationEventPauses

getConcurrentEventPauses

getThroughput

getHeapAllocatedSizes

getHeapUsedSizes

getPermAllocatedSizes

getPermUsedSizes

getTenuredAllocatedSizes

getTenuredUsedSizes

getYoungAllocatedSizes

getYoungUsedSizes

getPostConcurrentCycleTenuredUsedSizes

getPostConcurrentCycleHeapUsedSizes

getPromotion

getFootprint

getRunningTime

getFirstPauseTimeStamp

getLastPauseTimeStamp

getFreedMemory

getFormat

setFormat

hasCorrectTimestamp

hasDateStamp

getFirstDateStamp

getFirstTimeStamp

getStartDate

toString

equals

hashCode