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

Class DataStorageMetricsImpl

java.lang.Object

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

All Implemented Interfaces:

DataStorageMetrics, DataStorageMetricsMXBean

public class DataStorageMetricsImpl
extends Object
implements DataStorageMetricsMXBean

Field Summary

Fields

Modifier and Type	Field and Description
static String	DATASTORAGE_METRIC_PREFIX Prefix for all data storage metrics.

Constructor Summary

Constructors

Constructor and Description
DataStorageMetricsImpl(GridMetricManager mmgr, boolean metricsEnabled, long rateTimeInterval, int subInts)

Method Summary

Modifier and Type	Method and Description
void	disableMetrics() Disables persistence metrics collection on an Apache Ignite node.
void	enableMetrics() Enables persistence metrics collection on an Apache Ignite node.
long	getCheckpointBufferSize() Checkpoint buffer size in bytes.
long	getCheckpointTotalTime() Total checkpoint time from last restart.
long	getDirtyPages() Total dirty pages for the next checkpoint.
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.
long	getOffHeapSize() Total offheap size in bytes.
long	getOffheapUsedSize() Total used offheap size in bytes.
long	getPagesRead() The number of read pages from last restart.
long	getPagesReplaced() The number of replaced pages from last restart.
long	getPagesWritten() The number of written pages from last restart.
long	getSparseStorageSize() Storage space allocated adjusted for possible sparsity in bytes.
long	getStorageSize() Storage space allocated in bytes.
long	getTotalAllocatedSize() Total size of memory allocated in bytes.
long	getUsedCheckpointBufferPages() Gets used checkpoint buffer size in pages.
long	getUsedCheckpointBufferSize() Gets used checkpoint buffer size in bytes.
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.
long	getWalLastRollOverTime() Time of the last WAL segment rollover.
float	getWalLoggingRate() Gets the average number of WAL records per second written during the last time interval.
long	getWalTotalSize() Total size in bytes for storage wal files.
float	getWalWritingRate() Gets the average number of bytes per second written during the last time interval.
boolean	metricsEnabled()
void	onBuffPollSpin(int num)
void	onCheckpoint(long lockWaitDuration, long markDuration, long pagesWriteDuration, long fsyncDuration, long duration, long totalPages, long dataPages, long cowPages, long storageSize, long sparseStorageSize)
void	onFsync(long nanoTime)
void	onWalBytesWritten(int size)
void	onWallRollOver()
void	onWalRecordLogged()
void	rateTimeInterval(long rateTimeInterval) Sets time interval for rate-based metrics.
void	regionMetrics(Collection<DataRegionMetrics> regionMetrics)
void	setWalSizeProvider(IgniteOutClosure<Long> walSizeProvider)
void	subIntervals(int subInts) Sets a number of sub-intervals the whole DataStorageMetricsMXBean.rateTimeInterval(long) will be split into to calculate rate-based metrics.
void	wal(IgniteWriteAheadLogManager wal)

Methods inherited from class java.lang.Object

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

Field Detail

DATASTORAGE_METRIC_PREFIX

public static final String DATASTORAGE_METRIC_PREFIX

Prefix for all data storage metrics.

See Also:

Constant Field Values

Constructor Detail

DataStorageMetricsImpl

public DataStorageMetricsImpl(GridMetricManager mmgr,
                              boolean metricsEnabled,
                              long rateTimeInterval,
                              int subInts)

Parameters:

mmgr - Metrics manager.

metricsEnabled - Metrics enabled flag.

rateTimeInterval - Rate time interval.

subInts - Number of sub-intervals.

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

Specified by:

getWalLoggingRate in interface DataStorageMetricsMXBean

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

Specified by:

getWalWritingRate in interface DataStorageMetricsMXBean

getWalArchiveSegments

public int getWalArchiveSegments()

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

Specified by:

getWalArchiveSegments in interface DataStorageMetrics

Specified by:

getWalArchiveSegments in interface DataStorageMetricsMXBean

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

Specified by:

getWalFsyncTimeAverage in interface DataStorageMetricsMXBean

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

Specified by:

getWalBuffPollSpinsRate in interface DataStorageMetricsMXBean

getLastCheckpointDuration

public long getLastCheckpointDuration()

Gets the duration of the last checkpoint in milliseconds.

Specified by:

getLastCheckpointDuration in interface DataStorageMetrics

Specified by:

getLastCheckpointDuration in interface DataStorageMetricsMXBean

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

Specified by:

getLastCheckpointLockWaitDuration in interface DataStorageMetricsMXBean

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

Specified by:

getLastCheckpointMarkDuration in interface DataStorageMetricsMXBean

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

Specified by:

getLastCheckpointPagesWriteDuration in interface DataStorageMetricsMXBean

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

Specified by:

getLastCheckpointFsyncDuration in interface DataStorageMetricsMXBean

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

Specified by:

getLastCheckpointTotalPagesNumber in interface DataStorageMetricsMXBean

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

Specified by:

getLastCheckpointDataPagesNumber in interface DataStorageMetricsMXBean

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

Specified by:

getLastCheckpointCopiedOnWritePagesNumber in interface DataStorageMetricsMXBean

Returns:

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

enableMetrics

public void enableMetrics()

Enables persistence metrics collection on an Apache Ignite node.

Specified by:

enableMetrics in interface DataStorageMetricsMXBean

disableMetrics

public void disableMetrics()

Disables persistence metrics collection on an Apache Ignite node.

Specified by:

disableMetrics in interface DataStorageMetricsMXBean

rateTimeInterval

public void rateTimeInterval(long rateTimeInterval)

Sets time interval for rate-based metrics. Identical to setting DataStorageConfiguration.setMetricsRateTimeInterval(long) configuration property.

Specified by:

rateTimeInterval in interface DataStorageMetricsMXBean

Parameters:

rateTimeInterval - Time interval (in milliseconds) used for allocation and eviction rates calculations.

subIntervals

public void subIntervals(int subInts)

Sets a number of sub-intervals the whole DataStorageMetricsMXBean.rateTimeInterval(long) will be split into to calculate rate-based metrics. Identical to setting DataStorageConfiguration.setMetricsSubIntervalCount(int) configuration property.

Specified by:

subIntervals in interface DataStorageMetricsMXBean

Parameters:

subInts - A number of sub-intervals.

getWalTotalSize

public long getWalTotalSize()

Total size in bytes for storage wal files.

Specified by:

getWalTotalSize in interface DataStorageMetrics

Specified by:

getWalTotalSize in interface DataStorageMetricsMXBean

Returns:

Total size in bytes for storage wal files.

getWalLastRollOverTime

public long getWalLastRollOverTime()

Time of the last WAL segment rollover.

Specified by:

getWalLastRollOverTime in interface DataStorageMetrics

Specified by:

getWalLastRollOverTime in interface DataStorageMetricsMXBean

Returns:

Time of the last WAL segment rollover.

getCheckpointTotalTime

public long getCheckpointTotalTime()

Total checkpoint time from last restart.

Specified by:

getCheckpointTotalTime in interface DataStorageMetrics

Specified by:

getCheckpointTotalTime in interface DataStorageMetricsMXBean

Returns:

Total checkpoint time from last restart.

getDirtyPages

public long getDirtyPages()

Total dirty pages for the next checkpoint.

Specified by:

getDirtyPages in interface DataStorageMetrics

Specified by:

getDirtyPages in interface DataStorageMetricsMXBean

Returns:

Total dirty pages for the next checkpoint.

getPagesRead

public long getPagesRead()

The number of read pages from last restart.

Specified by:

getPagesRead in interface DataStorageMetrics

Specified by:

getPagesRead in interface DataStorageMetricsMXBean

Returns:

The number of read pages from last restart.

getPagesWritten

public long getPagesWritten()

The number of written pages from last restart.

Specified by:

getPagesWritten in interface DataStorageMetrics

Specified by:

getPagesWritten in interface DataStorageMetricsMXBean

Returns:

The number of written pages from last restart.

getPagesReplaced

public long getPagesReplaced()

The number of replaced pages from last restart.

Specified by:

getPagesReplaced in interface DataStorageMetrics

Specified by:

getPagesReplaced in interface DataStorageMetricsMXBean

Returns:

The number of replaced pages from last restart.

getOffHeapSize

public long getOffHeapSize()

Total offheap size in bytes.

Specified by:

getOffHeapSize in interface DataStorageMetrics

Specified by:

getOffHeapSize in interface DataStorageMetricsMXBean

Returns:

Total offheap size in bytes.

getOffheapUsedSize

public long getOffheapUsedSize()

Total used offheap size in bytes.

Specified by:

getOffheapUsedSize in interface DataStorageMetrics

Specified by:

getOffheapUsedSize in interface DataStorageMetricsMXBean

Returns:

Total used offheap size in bytes.

getTotalAllocatedSize

public long getTotalAllocatedSize()

Total size of memory allocated in bytes.

Specified by:

getTotalAllocatedSize in interface DataStorageMetrics

Specified by:

getTotalAllocatedSize in interface DataStorageMetricsMXBean

Returns:

Total size of memory allocated in bytes.

getUsedCheckpointBufferPages

public long getUsedCheckpointBufferPages()

Gets used checkpoint buffer size in pages.

Specified by:

getUsedCheckpointBufferPages in interface DataStorageMetrics

Specified by:

getUsedCheckpointBufferPages in interface DataStorageMetricsMXBean

Returns:

Checkpoint buffer size in pages.

getUsedCheckpointBufferSize

public long getUsedCheckpointBufferSize()

Gets used checkpoint buffer size in bytes.

Specified by:

getUsedCheckpointBufferSize in interface DataStorageMetrics

Specified by:

getUsedCheckpointBufferSize in interface DataStorageMetricsMXBean

Returns:

Checkpoint buffer size in bytes.

getCheckpointBufferSize

public long getCheckpointBufferSize()

Checkpoint buffer size in bytes.

Specified by:

getCheckpointBufferSize in interface DataStorageMetrics

Specified by:

getCheckpointBufferSize in interface DataStorageMetricsMXBean

Returns:

Checkpoint buffer size in bytes.

wal

public void wal(IgniteWriteAheadLogManager wal)

Parameters:

wal - Write-ahead log manager.

setWalSizeProvider

public void setWalSizeProvider(IgniteOutClosure<Long> walSizeProvider)

Parameters:

walSizeProvider - Wal size provider.

onWallRollOver

public void onWallRollOver()

regionMetrics

public void regionMetrics(Collection<DataRegionMetrics> regionMetrics)

metricsEnabled

public boolean metricsEnabled()

Returns:

Metrics enabled flag.

getStorageSize

public long getStorageSize()

Storage space allocated in bytes.

Specified by:

getStorageSize in interface DataStorageMetrics

Specified by:

getStorageSize in interface DataStorageMetricsMXBean

Returns:

Storage space allocated in bytes.

getSparseStorageSize

public long getSparseStorageSize()

Storage space allocated adjusted for possible sparsity in bytes. May produce unstable or even incorrect result on some file systems (e.g. XFS). Known to work correctly on Ext4 and Btrfs.

Specified by:

getSparseStorageSize in interface DataStorageMetrics

Specified by:

getSparseStorageSize in interface DataStorageMetricsMXBean

Returns:

Storage space allocated adjusted for possible sparsity in bytes or negative value is not supported.

onCheckpoint

public void onCheckpoint(long lockWaitDuration,
                         long markDuration,
                         long pagesWriteDuration,
                         long fsyncDuration,
                         long duration,
                         long totalPages,
                         long dataPages,
                         long cowPages,
                         long storageSize,
                         long sparseStorageSize)

Parameters:

lockWaitDuration - Lock wait duration.

markDuration - Mark duration.

pagesWriteDuration - Pages write duration.

fsyncDuration - Total checkpoint fsync duration.

duration - Total checkpoint duration.

totalPages - Total number of all pages in checkpoint.

dataPages - Total number of data pages in checkpoint.

cowPages - Total number of COW-ed pages in checkpoint.

onWalRecordLogged

public void onWalRecordLogged()

onWalBytesWritten

public void onWalBytesWritten(int size)

Parameters:

size - Size written.

onFsync

public void onFsync(long nanoTime)

Parameters:

nanoTime - Fsync nano time.

onBuffPollSpin

public void onBuffPollSpin(int num)

Parameters:

num - Number.