PerfMon Counters

NCache publishes different counters for monitoring purposes. It publishes its performance counters through PerfMon. It also publishes some counters for debugging purposes. You can monitor NCache counters for a specific cache on any Windows machine using Windows PerfMon tools.

Performance Counters

NCache is not only enriched with powerful monitoring facilities, but besides that; it also provides different categories of counters for Windows performance monitor. This lets the users monitor the overall performance of NCache. They cover all aspects of NCache monitoring including remote clients, cache clients, clustered operations, server counters, and many more.

Performance counters provide valuable information about system hardware, services, networks, and applications that can be used to determine their performance. It helps in diagnosing problems, fine-tuning systems and applications, monitoring real-time application performance, and resolving bottleneck causes of system components.

Performance counters can be seen from PerfMon. The statistics view is also used to see the performance statistics of a cache or a cluster.

These counters include:

Counters	Description
Fetches/sec	Number of Get operations per second.
Hits/sec	Number of successful Get operations per second.
Misses/sec	Number of failed Get operations per second.
Additions/sec	Number of Add operations per second.
Updates/sec	Number of Insert operations per second.
Deletes/sec	Number of Remove operations per second.
Expirations/sec	Number of items being expired currently per second.
Evictions/sec	Number of items evicted per second.
Average µs/fetch	Average time in seconds taken to complete one fetch operation.
Average µs/add	Average time in seconds taken to complete one Add operation.
Average µs/insert	Average time in seconds taken to complete one insert operation.
Average µs/remove	Average time in seconds taken to complete one remove operation.
Average µs/cache operation	Average time, in seconds, taken to complete one cache operation.
Client Requests/sec	Number of requests sent by all clients to the cache server.
Client Responses/sec	Number of responses received by all clients from the cache server.
Cluster ops/sec	Number of clustered operations performed per second.
Cluster opsrecv/sec	Number of clustered operations performed per second.
Clustered opsent/sec	Number of clustered operations performed per second.
Count	Number of items in the cache.
Data balance/sec	Number of items this node is either reading from other nodes or sending to other nodes during a Data Load Balancing mode.
Mirror Queue Size	Number of items in the Mirror queue.
Misses/sec	Number of failed Get operations per second.
Response sent/sec	Number of clustered operations performed per second.
Responses/sec	Number of responses sent (meaning cache response for commands like add, get, insert, remove, etc.) to all clients by this cache server.
State transfer/sec	Number of items this node is either reading from other nodes or sending to other nodes during a state transfer mode.
CacheLastAccessCount	Number of items that are older than the access interval specified in the config.
Cluster ops/sec	Number of clustered operations performed per second.
Bytes sent/sec	How much data is sent from this node to other nodes in the cache.
Bytes received/sec	How much data is received by this node from other nodes in the cache.
Cache Size	Size of the cache in bytes, including cache store meta info and all other indices.
Requests/sec	Number of requests (meaning cache commands like add, get, insert, remove, etc.) being processed from all clients by this cache server.
Client bytes sent/sec	Bytes being sent from the cache server to all its clients.
Client bytes received/sec	Bytes being received by the cache server from all its clients.
Response Queue Count	Number of items in response queue; all responses are queued in the response queue before being sent.
Response Queue Size	Size of the response queue in bytes. It displays the total data size of all the responses in the response queue.
Event Queue Count	Number of events in the event queue.
Events Processed/sec	Number of events processed per second on a client.
Events Triggered/sec	Number of events triggered and received by client per second.
Average ms/event	Average time taken by the client to process a single event.
Average µs/addBulk	Average Number of bulk (not independent keys) adds per microsecond. This applies to Bulk APIs.
Average µs/fetchBulk	Average Number of bulk (not independent keys) fetches per microsecond. This applies to Bulk, APIs.
Average µs/removeBulk	Average Number of bulk (not independent keys) removes per microsecond. This applies to Bulk APIs.
Average µs/insertBulk	Average Number of bulk (not independent keys) inserts per microsecond. This applies to Bulk APIs.
Messages Count	Number of messages entertained by Pub/Sub topic.
Messages Delivered/sec	Number of messages delivered to subscribers in one second.
Messages Published/sec	Number of messages published in one second.
Messages Expired/sec	Number of messages expired in one second.
Message Store Size	Size of the message store created within a topic.
Topics Count	Number of topics that are registered on the cache.

Debugging Counters

Counter	Description
Socket send time (ms)	Time in milliseconds taken to send a request.
Socket send size (bytes)	Bytes sent per second.
Socket recv time (ms)	Time in milliseconds taken to receive a request.
Socket recv size (bytes)	Bytes received per second.
TcpUpQueueCount	Number of items in TCP up queue.
TcpDownQueueCount	Number of items in TCP down queue.
BCastQueueCount	Number of items in BCast Queue.
MCastQueueCount	Number of items in MCast Queue.

See Also

Cache Client Settings
Verify Cache Health
Monitor NCache Using PerfMon
Cache Logs