MBean cache statistics

Use this page as a reference for properties of MBean cache statistics.

You can use the Performance Monitoring Infrastructure (PMI) data for dynamic cache to monitor the behavior and performance of the dynamic cache service. For information on the functions and usages of dynamic cache, refer to Task overview: Using the dynamic cache service to improve performance.

MBean cache statistics

MBean attributes Description
CacheHits The total number of cache hits.
CacheLruRemoves The number of memory-based least recently used (LRU) evictions. These correspond to the number of objects that are evicted from the memory cache, based on the LRU policy.
CacheMisses The total number of cache misses.
CacheRemoves The total number of cache removes.
DependencyIdsOnDisk Metric that captures the total number of dependency identifiers that are currently on disk.
DependencyIdsBufferedForDisk Metric that captures the number of dependency identifiers that are buffered in memory for the disk.
DependencyIdsOffloadedToDisk Metric that captures the number of dependency IDs that are off-loaded to disk since the server startup. This is a cumulative count.
DependencyIdBasedInvalidationsFromDisk Metric that captures the number of dependency ID-based invalidations that have occurred since server startup.
DiskCacheSizeInMB The total size of data objects in MB.
ExplicitInvalidationsFromMemory Metric that captures the number of explicit invalidations that result in an entry being removed from memory.
ExplicitInvalidationsFromDisk Metric that captures the number of explicit invalidations that result in an entry being removed from disk.
ExplicitInvalidationsLocal Metric that captures the number of explicit invalidations that are generated locally.
ExplicitInvalidationRemote Metric that captures the number of explicit invalidations that generate from a cooperating Java virtual machine (JVM) in the cluster.
ObjectsOnDisk Metric that captures the number of cache entries that are currently on disk.
PendingRemovalFromDisk Metric that captures the number of objects that have been invalidated due to an explicit event, such as an invalidation, or some implicit event, such as a timeout or eviction policy, but are yet to be removed from disk.
TimeoutInvalidationFromDisk Metric that captures the number of timeout invalidations that result in an entry being removed from disk.
TimeoutInvalidationsFromMemory Metric that captures the number of timeout invalidations that result in an entry being removed from memory.
TemplatesOnDisk Metric that captures the number of templates on disk.



Related tasks
Monitoring overall system health
Related reference
PMI data organization
Reference topic    

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Last updated: Sep 20, 2010 11:08:29 PM CDT
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