com.bigdata.cache
Interface IGlobalLRU.IGlobalLRUCounters

All Superinterfaces:

ICounterNode, ICounterSet

Enclosing interface:

IGlobalLRU<K,V>

public static interface IGlobalLRU.IGlobalLRUCounters
extends ICounterSet

Interface defines some standard counters for the global LRU.

Version:

$Id: IGlobalLRU.java 2265 2009-10-26 12:51:06Z thompsonbry $

Author:

Bryan Thompson

Nested Class Summary

Nested classes/interfaces inherited from interface com.bigdata.counters.ICounterSet

ICounterSet.IInstrumentFactory

Field Summary

static String	AVERAGE_RECORD_SIZE_IN_MEMORY The average decompressed byte length for the records buffered in the cache (current value).
static String	AVERAGE_RECORD_SIZE_ON_DISK The average size on disk for the records buffered in the cache (current value).
static String	BUFFERED_RECORD_COUNT The #of records buffered by the cache (current value).
static String	BUFFERED_RECORD_EVICTION_BYTE_COUNT The #of bytes for records that have been evicted from the cache to date.
static String	BUFFERED_RECORD_EVICTION_COUNT The #of records that have been evicted from the cache to date.
static String	BYTES_IN_MEMORY The decompressed byte length for the records that are buffered by the cache.
static String	BYTES_ON_DISK The #of bytes on disk for the records that are buffered by the cache.
static String	CACHE_COUNT The #of per-IRawStore cache instances (current value).
static String	MAXIMUM_ALLOWED_BYTES_IN_MEMORY The maximum bytes in memory that may be used by the cache.
static String	PERCENT_BYTES_IN_MEMORY The percentage of the maximum allowed bytes in memory that is used by the cache.

Fields inherited from interface com.bigdata.counters.ICounterSet

pathSeparator

Method Summary

Methods inherited from interface com.bigdata.counters.ICounterSet

asXML, asXML, asXML, getCounters, makePath, readXML, toString, toString

Methods inherited from interface com.bigdata.counters.ICounterNode

getChild, getDepth, getName, getParent, getPath, getPath, getRoot, isCounter, isCounterSet, isRoot

Field Detail

BYTES_ON_DISK

static final String BYTES_ON_DISK

The #of bytes on disk for the records that are buffered by the cache.

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Constant Field Values

BYTES_IN_MEMORY

static final String BYTES_IN_MEMORY

The decompressed byte length for the records that are buffered by the cache.

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Constant Field Values

MAXIMUM_ALLOWED_BYTES_IN_MEMORY

static final String MAXIMUM_ALLOWED_BYTES_IN_MEMORY

The maximum bytes in memory that may be used by the cache. Note that the constraint is strictly in terms of the value reported by BYTES_IN_MEMORY and DOES NOT reflect any additional overhead required to represent the objects associated with the buffered data records.

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Constant Field Values

PERCENT_BYTES_IN_MEMORY

static final String PERCENT_BYTES_IN_MEMORY

The percentage of the maximum allowed bytes in memory that is used by the cache.

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Constant Field Values

BUFFERED_RECORD_COUNT

static final String BUFFERED_RECORD_COUNT

The #of records buffered by the cache (current value).

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Constant Field Values

BUFFERED_RECORD_EVICTION_COUNT

static final String BUFFERED_RECORD_EVICTION_COUNT

The #of records that have been evicted from the cache to date.

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Constant Field Values

BUFFERED_RECORD_EVICTION_BYTE_COUNT

static final String BUFFERED_RECORD_EVICTION_BYTE_COUNT

The #of bytes for records that have been evicted from the cache to date.

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Constant Field Values

AVERAGE_RECORD_SIZE_ON_DISK

static final String AVERAGE_RECORD_SIZE_ON_DISK

The average size on disk for the records buffered in the cache (current value).

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Constant Field Values

AVERAGE_RECORD_SIZE_IN_MEMORY

static final String AVERAGE_RECORD_SIZE_IN_MEMORY

The average decompressed byte length for the records buffered in the cache (current value).

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Constant Field Values

CACHE_COUNT

static final String CACHE_COUNT

The #of per-IRawStore cache instances (current value). Some implementations MAY supply additional counters for each active cache instance.

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Constant Field Values