com.orientechnologies.orient.core.storage.impl.local.statistic

Class OSessionStoragePerformanceStatistic.PerformanceCountersHolder

java.lang.Object

com.orientechnologies.orient.core.storage.impl.local.statistic.OSessionStoragePerformanceStatistic.PerformanceCountersHolder

All Implemented Interfaces:

OSessionStoragePerformanceStatistic.CountersHolder<OSessionStoragePerformanceStatistic.PerformanceCountersHolder>

Direct Known Subclasses:

OClusterCountersHolder, OSessionStoragePerformanceStatistic.IndexCountersHolder, OSessionStoragePerformanceStatistic.RidbagCountersHolder

Enclosing class:

OSessionStoragePerformanceStatistic

public static class OSessionStoragePerformanceStatistic.PerformanceCountersHolder
extends Object
implements OSessionStoragePerformanceStatistic.CountersHolder<OSessionStoragePerformanceStatistic.PerformanceCountersHolder>

Container for all performance counters which are shared between durable components and whole system.

Constructor Summary

Constructors

Constructor and Description
PerformanceCountersHolder()

Method Summary

Modifier and Type	Method and Description
void	clean() Clears all performance data.
long	getAmountOfPagesPerOperation()
long	getAmountOfPagesReadFromCache()
long	getAmountOfPagesReadFromFile()
long	getAmountOfPagesWrittenInCache()
int	getCacheHits()
long	getCommitTime()
long	getReadSpeedFromCacheInPages()
long	getReadSpeedFromFileInPages()
long	getWriteSpeedInCacheInPages()
OSessionStoragePerformanceStatistic.PerformanceCountersHolder	newInstance()
void	pushData(OSessionStoragePerformanceStatistic.PerformanceCountersHolder aggregator) Aggregates passed in and current performance data.
ODocument	toDocument() Converts properties of given class into values of fields of returned document.

Methods inherited from class java.lang.Object

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

Constructor Detail

PerformanceCountersHolder

public PerformanceCountersHolder()

Method Detail

clean

public void clean()

Clears all performance data.

Specified by:

clean in interface OSessionStoragePerformanceStatistic.CountersHolder<OSessionStoragePerformanceStatistic.PerformanceCountersHolder>

pushData

public void pushData(OSessionStoragePerformanceStatistic.PerformanceCountersHolder aggregator)

Aggregates passed in and current performance data. Result is put in passed in data.

Specified by:

pushData in interface OSessionStoragePerformanceStatistic.CountersHolder<OSessionStoragePerformanceStatistic.PerformanceCountersHolder>

Parameters:

aggregator - Data to aggregate

getCommitTime

public long getCommitTime()

Returns:

Average time is spent on commit of single atomic operation.

getReadSpeedFromCacheInPages

public long getReadSpeedFromCacheInPages()

Returns:

Read speed of data in pages per second on cache level or value which is less than 0, which means that value cannot be calculated.

getReadSpeedFromFileInPages

public long getReadSpeedFromFileInPages()

Returns:

Read speed of data on file system level in pages per second or value which is less than 0, which means that value cannot be calculated.

getAmountOfPagesReadFromCache

public long getAmountOfPagesReadFromCache()

Returns:

Amount of pages read from cache in total.

getAmountOfPagesReadFromFile

public long getAmountOfPagesReadFromFile()

Returns:

Amount of pages are read from file.

getWriteSpeedInCacheInPages

public long getWriteSpeedInCacheInPages()

Returns:

Write speed of data in pages per second on cache level or value which is less than 0, which means that value cannot be calculated.

getAmountOfPagesWrittenInCache

public long getAmountOfPagesWrittenInCache()

Returns:

Amount of pages written to cache.

getCacheHits

public int getCacheHits()

Returns:

Percent of cache hits or value which is less than 0, which means that value cannot be calculated.

getAmountOfPagesPerOperation

public long getAmountOfPagesPerOperation()

Returns:

Amount of pages accessed from cache for each component operation

toDocument

public ODocument toDocument()

Converts properties of given class into values of fields of returned document. Names of fields equal to names of properties.

Specified by:

toDocument in interface OSessionStoragePerformanceStatistic.CountersHolder<OSessionStoragePerformanceStatistic.PerformanceCountersHolder>

Returns:

Performance characteristics of storage.

newInstance

public OSessionStoragePerformanceStatistic.PerformanceCountersHolder newInstance()