org.apache.ignite.internal.processors.cache.persistence.pagemem

Class CheckpointMetricsTracker

java.lang.Object

org.apache.ignite.internal.processors.cache.persistence.pagemem.CheckpointMetricsTracker

public class CheckpointMetricsTracker
extends Object

Tracks various checkpoint phases and stats. Assumed sequence of events:

1. Checkpoint start
2. CP Lock wait start
3. CP mark start
4. CP Lock release
5. Pages write start
6. fsync start
7. Checkpoint end

Constructor Summary

Constructors

Constructor and Description
CheckpointMetricsTracker()

Method Summary

Modifier and Type	Method and Description
int	cowPagesWritten()
int	dataPagesWritten()
long	fsyncDuration()
long	lockHoldDuration()
long	lockWaitDuration()
long	markDuration()
void	onCowPageWritten()
void	onDataPageWritten()
void	onEnd()
void	onFsyncStart()
void	onLockRelease()
void	onLockWaitStart()
void	onMarkStart()
void	onPagesWriteStart()
long	pagesWriteDuration()
long	totalDuration()

Methods inherited from class java.lang.Object

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

Constructor Detail

CheckpointMetricsTracker

public CheckpointMetricsTracker()

Method Detail

onCowPageWritten

public void onCowPageWritten()

onDataPageWritten

public void onDataPageWritten()

cowPagesWritten

public int cowPagesWritten()

Returns:

COW pages.

dataPagesWritten

public int dataPagesWritten()

Returns:

Data pages written.

onLockWaitStart

public void onLockWaitStart()

onMarkStart

public void onMarkStart()

onLockRelease

public void onLockRelease()

onPagesWriteStart

public void onPagesWriteStart()

onFsyncStart

public void onFsyncStart()

onEnd

public void onEnd()

totalDuration

public long totalDuration()

Returns:

Total checkpoint duration.

lockWaitDuration

public long lockWaitDuration()

Returns:

Checkpoint lock wait duration.

markDuration

public long markDuration()

Returns:

Checkpoint mark duration.

lockHoldDuration

public long lockHoldDuration()

Returns:

Checkpoint lock hold duration.

pagesWriteDuration

public long pagesWriteDuration()

Returns:

Pages write duration.

fsyncDuration

public long fsyncDuration()

Returns:

Checkpoint fsync duration.