Class StatsCollector

    • Field Detail

      • SEGMENT_0

        public static final IntSet SEGMENT_0
    • Constructor Detail

      • StatsCollector

        public StatsCollector()
    • Method Detail

      • start

        public void start()
      • getHits

        @ManagedAttribute(description="Number of cache attribute hits",
                          displayName="Number of cache hits",
                          measurementType=TRENDSUP)
        public long getHits()
        Specified by:
        getHits in interface Stats
        Returns:
        Number of cache get hits.
      • getMisses

        @ManagedAttribute(description="Number of cache attribute misses",
                          displayName="Number of cache misses",
                          measurementType=TRENDSUP)
        public long getMisses()
        Specified by:
        getMisses in interface Stats
        Returns:
        Number of cache get misses.
      • getRemoveHits

        @ManagedAttribute(description="Number of cache removal hits",
                          displayName="Number of cache removal hits",
                          measurementType=TRENDSUP)
        public long getRemoveHits()
        Specified by:
        getRemoveHits in interface Stats
        Returns:
        Number of cache removal hits.
      • getRemoveMisses

        @ManagedAttribute(description="Number of cache removals where keys were not found",
                          displayName="Number of cache removal misses",
                          measurementType=TRENDSUP)
        public long getRemoveMisses()
        Specified by:
        getRemoveMisses in interface Stats
        Returns:
        Number of cache removal misses.
      • getStores

        @ManagedAttribute(description="Number of cache attribute put operations",
                          displayName="Number of cache puts",
                          measurementType=TRENDSUP)
        public long getStores()
        Specified by:
        getStores in interface Stats
        Returns:
        Number of entries stored in cache since start.
      • getRetrievals

        public long getRetrievals()
        Specified by:
        getRetrievals in interface Stats
        Returns:
        Number of entries read from the cache since start.
      • getEvictions

        @ManagedAttribute(description="Number of cache eviction operations",
                          displayName="Number of cache evictions",
                          measurementType=TRENDSUP)
        public long getEvictions()
        Specified by:
        getEvictions in interface Stats
        Returns:
        Number of cache eviction.
      • getHitRatio

        @ManagedAttribute(description="Percentage hit/(hit+miss) ratio for the cache",
                          displayName="Hit ratio",
                          units=PERCENTAGE)
        public double getHitRatio()
      • getReadWriteRatio

        @ManagedAttribute(description="Read/writes ratio for the cache",
                          displayName="Read/write ratio",
                          units=PERCENTAGE)
        public double getReadWriteRatio()
      • getAverageReadTime

        @ManagedAttribute(description="Average number of milliseconds for a read operation on the cache",
                          displayName="Average read time",
                          units=MILLISECONDS)
        public long getAverageReadTime()
        Specified by:
        getAverageReadTime in interface Stats
        Returns:
        Average number of milliseconds for a cache get on the cache
      • getAverageReadTimeNanos

        @ManagedAttribute(description="Average number of nanoseconds for a read operation on the cache",
                          displayName="Average read time (ns)",
                          units=NANOSECONDS)
        public long getAverageReadTimeNanos()
        Specified by:
        getAverageReadTimeNanos in interface Stats
        Returns:
        Average number of nanoseconds for a cache get on the cache
      • getAverageWriteTime

        @ManagedAttribute(description="Average number of milliseconds for a write operation in the cache",
                          displayName="Average write time",
                          units=MILLISECONDS)
        public long getAverageWriteTime()
        Specified by:
        getAverageWriteTime in interface Stats
        Returns:
        Average number of milliseconds for a cache put on the cache
      • getAverageWriteTimeNanos

        @ManagedAttribute(description="Average number of nanoseconds for a write operation in the cache",
                          displayName="Average write time (ns)",
                          units=NANOSECONDS)
        public long getAverageWriteTimeNanos()
        Specified by:
        getAverageWriteTimeNanos in interface Stats
        Returns:
        Average number of milliseconds for a cache put on the cache
      • getAverageRemoveTime

        @ManagedAttribute(description="Average number of milliseconds for a remove operation in the cache",
                          displayName="Average remove time",
                          units=MILLISECONDS)
        public long getAverageRemoveTime()
        Specified by:
        getAverageRemoveTime in interface Stats
        Returns:
        Average number of milliseconds for a cache remove on the cache
      • getAverageRemoveTimeNanos

        @ManagedAttribute(description="Average number of nanoseconds for a remove operation in the cache",
                          displayName="Average remove time (ns)",
                          units=NANOSECONDS)
        public long getAverageRemoveTimeNanos()
        Specified by:
        getAverageRemoveTimeNanos in interface Stats
        Returns:
        Average number of nanoseconds for a cache remove on the cache
      • getRequiredMinimumNumberOfNodes

        @ManagedAttribute(description="Required minimum number of nodes to hold current cache data",
                          displayName="Required minimum number of nodes")
        public int getRequiredMinimumNumberOfNodes()
        Specified by:
        getRequiredMinimumNumberOfNodes in interface Stats
        Returns:
        Required minimum number of nodes to guarantee data consistency
      • reset

        public void reset()
        Description copied from interface: Stats
        Reset statistics
        Specified by:
        reset in interface Stats
      • setStatisticsEnabled

        @ManagedAttribute(description="Enables or disables the gathering of statistics by this component",
                          writable=true)
        public void setStatisticsEnabled​(boolean enabled)
        Description copied from interface: Stats
        Enables or disables statistics at runtime.
        Specified by:
        setStatisticsEnabled in interface JmxStatisticsExposer
        Specified by:
        setStatisticsEnabled in interface Stats
        Parameters:
        enabled - boolean indicating whether statistics should be enable or not
      • getNumberOfEntries

        @ManagedAttribute(description="Number of entries in the cache including passivated entries",
                          displayName="Number of current cache entries")
        @Deprecated
        public int getNumberOfEntries()
        Deprecated.
      • getCurrentNumberOfEntriesInMemory

        @ManagedAttribute(description="Number of entries currently in-memory excluding expired entries",
                          displayName="Number of in-memory cache entries")
        @Deprecated
        public int getCurrentNumberOfEntriesInMemory()
        Deprecated.
        Description copied from interface: Stats
        The same as Stats.getCurrentNumberOfEntries(), however passivated entries are not included.
        Specified by:
        getCurrentNumberOfEntriesInMemory in interface Stats
      • getTimeSinceStart

        @ManagedAttribute(description="Number of seconds since cache started",
                          displayName="Seconds since cache started",
                          units=SECONDS,
                          measurementType=TRENDSUP)
        public long getTimeSinceStart()
        Specified by:
        getTimeSinceStart in interface Stats
        Returns:
        Number of seconds since cache started.
      • getTimeSinceReset

        @ManagedAttribute(description="Number of seconds since the cache statistics were last reset",
                          displayName="Seconds since cache statistics were reset",
                          units=SECONDS)
        public long getTimeSinceReset()
        Specified by:
        getTimeSinceReset in interface Stats
        Returns:
        Number of seconds since stats where reset
      • getApproximateEntries

        @ManagedAttribute(description="Approximate current number of entries in the cache, including persisted and expired entries.",
                          displayName="Approximate number of entries")
        public long getApproximateEntries()
        Description copied from interface: Stats
        Returns the approximate number of entries in this cache that exist in memory or persistent storage. When the cache is configured with distribution, this method only returns the number of entries in the local cache instance. In other words, it does not communicate with other nodes to find out about data stored in the cluster and not available locally.
        Specified by:
        getApproximateEntries in interface Stats
        Returns:
        Number of entries currently in the cache, including passivated entries.
      • getApproximateEntriesInMemory

        @ManagedAttribute(description="Approximate current number of entries in memory, including expired entries.",
                          displayName="Approximate number of cache entries in memory")
        public long getApproximateEntriesInMemory()
        Description copied from interface: Stats
        The same as Stats.getApproximateEntries(), however passivated entries are not included.
        Specified by:
        getApproximateEntriesInMemory in interface Stats
      • getApproximateEntriesUnique

        @ManagedAttribute(description="Approximate current number of entries in the cache, including persisted and expired entries.",
                          displayName="Approximate number of entries")
        public long getApproximateEntriesUnique()
        Description copied from interface: Stats
        The same as Stats.getApproximateEntries(), however only entries owned as primary are counted. This is only different from Stats.getApproximateEntries() only in distributed and replicated caches.
        Specified by:
        getApproximateEntriesUnique in interface Stats
      • getCurrentNumberOfEntries

        public int getCurrentNumberOfEntries()
        Description copied from interface: Stats
        Returns the number of entries currently in this cache instance. When the cache is configured with distribution, this method only returns the number of entries in the local cache instance. In other words, it does not attempt to communicate with other nodes to find out about the data stored in other nodes in the cluster that is not available locally.
        Specified by:
        getCurrentNumberOfEntries in interface Stats
        Returns:
        Number of entries currently in the cache, including passivated entries.
      • getTotalNumberOfEntries

        @Deprecated
        public long getTotalNumberOfEntries()
        Deprecated.
        Description copied from interface: Stats
        Number of entries stored in cache since the cache started running.
        Specified by:
        getTotalNumberOfEntries in interface Stats
      • getDataMemoryUsed

        @ManagedAttribute(description="Amount of memory in bytes allocated for use in eviction for data in the cache",
                          displayName="Memory used by data in the cache")
        public long getDataMemoryUsed()
        Description copied from interface: Stats
        Provides how much memory the current eviction algorithm estimates is in use for data. This method will return a number 0 or greater if memory eviction is in use. If memory eviction is not enabled this method will always return -1.
        Specified by:
        getDataMemoryUsed in interface Stats
        Returns:
        memory in use or -1 if memory eviction is not enabled
      • getOffHeapMemoryUsed

        @ManagedAttribute(description="Amount off-heap memory used by this cache (bytes)",
                          displayName="Off-Heap memory used")
        public long getOffHeapMemoryUsed()
        Description copied from interface: Stats
        The amount of off-heap memory used by this cache, or -1 if the cache stores data in the heap.
        Specified by:
        getOffHeapMemoryUsed in interface Stats
      • resetStatistics

        @ManagedOperation(description="Resets statistics gathered by this component",
                          displayName="Reset Statistics (Statistics)")
        public void resetStatistics()
        Description copied from interface: JmxStatisticsExposer
        Resets an interceptor's cache statistics
        Specified by:
        resetStatistics in interface JmxStatisticsExposer
      • recordMisses

        public void recordMisses​(int misses,
                                 long time)
      • recordHits

        public void recordHits​(int hits,
                               long time)
      • recordEviction

        public void recordEviction()
      • recordEvictions

        public void recordEvictions​(int evicted)
      • recordStores

        public void recordStores​(int stores,
                                 long time)
      • recordRemoveHits

        public void recordRemoveHits​(int removes,
                                     long time)
      • recordRemoveMisses

        public void recordRemoveMisses​(int removes)