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

Class DataStorageMetricsSnapshot

java.lang.Object

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

All Implemented Interfaces:

DataStorageMetrics

public class DataStorageMetricsSnapshot
extends Object
implements DataStorageMetrics

Constructor Summary

Constructors

Constructor and Description
DataStorageMetricsSnapshot(DataStorageMetrics metrics)

Method Summary

Modifier and Type	Method and Description
long	getLastCheckpointCopiedOnWritePagesNumber() Gets the number of pages copied to a temporary checkpoint buffer during the last checkpoint.
long	getLastCheckpointDataPagesNumber() Gets the number of data pages written during the last checkpoint.
long	getLastCheckpointDuration() Gets the duration of the last checkpoint in milliseconds.
long	getLastCheckpointFsyncDuration() Gets the duration of the sync phase of the last checkpoint in milliseconds.
long	getLastCheckpointLockWaitDuration() Gets the duration of last checkpoint lock wait in milliseconds.
long	getLastCheckpointMarkDuration() Gets the duration of last checkpoint mark phase in milliseconds.
long	getLastCheckpointPagesWriteDuration() Gets the duration of last checkpoint pages write phase in milliseconds.
long	getLastCheckpointTotalPagesNumber() Gets the total number of pages written during the last checkpoint.
int	getWalArchiveSegments() Gets the current number of WAL segments in the WAL archive.
long	getWalBuffPollSpinsRate() Returns WAL buffer poll spins number over the last time interval.
float	getWalFsyncTimeAverage() Gets the average WAL fsync duration in microseconds over the last time interval.
float	getWalLoggingRate() Gets the average number of WAL records per second written during the last time interval.
float	getWalWritingRate() Gets the average number of bytes per second written during the last time interval.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

DataStorageMetricsSnapshot

public DataStorageMetricsSnapshot(DataStorageMetrics metrics)

Parameters:

metrics - Metrics.

Method Detail

getWalLoggingRate

public float getWalLoggingRate()

Gets the average number of WAL records per second written during the last time interval.

The length of time interval is configured via DataStorageConfiguration.setMetricsRateTimeInterval(long) configuration property. The number of subintervals is configured via DataStorageConfiguration.setMetricsSubIntervalCount(int) configuration property.

Specified by:

getWalLoggingRate in interface DataStorageMetrics

getWalWritingRate

public float getWalWritingRate()

Gets the average number of bytes per second written during the last time interval. The length of time interval is configured via DataStorageConfiguration.setMetricsRateTimeInterval(long) configuration property. The number of subintervals is configured via DataStorageConfiguration.setMetricsSubIntervalCount(int) configuration property.

Specified by:

getWalWritingRate in interface DataStorageMetrics

getWalArchiveSegments

public int getWalArchiveSegments()

Gets the current number of WAL segments in the WAL archive.

Specified by:

getWalArchiveSegments in interface DataStorageMetrics

getWalFsyncTimeAverage

public float getWalFsyncTimeAverage()

Gets the average WAL fsync duration in microseconds over the last time interval.

The length of time interval is configured via DataStorageConfiguration.setMetricsRateTimeInterval(long) configuration property. The number of subintervals is configured via DataStorageConfiguration.setMetricsSubIntervalCount(int) configuration property.

Specified by:

getWalFsyncTimeAverage in interface DataStorageMetrics

getWalBuffPollSpinsRate

public long getWalBuffPollSpinsRate()

Returns WAL buffer poll spins number over the last time interval.

The length of time interval is configured via DataStorageConfiguration.setMetricsRateTimeInterval(long) configuration property. The number of subintervals is configured via DataStorageConfiguration.setMetricsSubIntervalCount(int) configuration property.

Specified by:

getWalBuffPollSpinsRate in interface DataStorageMetrics

getLastCheckpointDuration

public long getLastCheckpointDuration()

Gets the duration of the last checkpoint in milliseconds.

Specified by:

getLastCheckpointDuration in interface DataStorageMetrics

Returns:

Total checkpoint duration in milliseconds.

getLastCheckpointLockWaitDuration

public long getLastCheckpointLockWaitDuration()

Gets the duration of last checkpoint lock wait in milliseconds.

Specified by:

getLastCheckpointLockWaitDuration in interface DataStorageMetrics

Returns:

Checkpoint lock wait time in milliseconds.

getLastCheckpointMarkDuration

public long getLastCheckpointMarkDuration()

Gets the duration of last checkpoint mark phase in milliseconds.

Specified by:

getLastCheckpointMarkDuration in interface DataStorageMetrics

Returns:

Checkpoint mark duration in milliseconds.

getLastCheckpointPagesWriteDuration

public long getLastCheckpointPagesWriteDuration()

Gets the duration of last checkpoint pages write phase in milliseconds.

Specified by:

getLastCheckpointPagesWriteDuration in interface DataStorageMetrics

Returns:

Checkpoint pages write phase in milliseconds.

getLastCheckpointFsyncDuration

public long getLastCheckpointFsyncDuration()

Gets the duration of the sync phase of the last checkpoint in milliseconds.

Specified by:

getLastCheckpointFsyncDuration in interface DataStorageMetrics

Returns:

Checkpoint fsync time in milliseconds.

getLastCheckpointTotalPagesNumber

public long getLastCheckpointTotalPagesNumber()

Gets the total number of pages written during the last checkpoint.

Specified by:

getLastCheckpointTotalPagesNumber in interface DataStorageMetrics

Returns:

Total number of pages written during the last checkpoint.

getLastCheckpointDataPagesNumber

public long getLastCheckpointDataPagesNumber()

Gets the number of data pages written during the last checkpoint.

Specified by:

getLastCheckpointDataPagesNumber in interface DataStorageMetrics

Returns:

Total number of data pages written during the last checkpoint.

getLastCheckpointCopiedOnWritePagesNumber

public long getLastCheckpointCopiedOnWritePagesNumber()

Gets the number of pages copied to a temporary checkpoint buffer during the last checkpoint.

Specified by:

getLastCheckpointCopiedOnWritePagesNumber in interface DataStorageMetrics

Returns:

Total number of pages copied to a temporary checkpoint buffer during the last checkpoint.

toString

public String toString()

Overrides:

toString in class Object