Memcache integration metrics
The official Datadog integration for monitoring Memcache. It collects 69 metrics.
Official summary
Track memory use, hits, misses, evictions, fill percent, and more.
Metric types
- gauge (value at a point in time): 69
Metrics
Descriptions are the official definitions, unedited.
| Metric | Type | Unit |
|---|---|---|
memcache.The average size of an item. | gauge | byte |
memcache.Current number of bytes used by this server to store items. | gauge | byte |
memcache.Rate of bytes read from the network by this server. | gauge | byte/ |
memcache.Rate of bytes written to the network by this server. | gauge | byte/ |
memcache.Rate at which keys are compared and swapped where the comparison (original) value did not match the supplied value. | gauge | key/ |
memcache.Rate at which keys are compared and swapped and found present. | gauge | hit/ |
memcache.Rate at which keys are compared and swapped and not found present. | gauge | miss/ |
memcache.Rate of "flush_all" commands. | gauge | command/ |
memcache.Rate of "get" commands. | gauge | command/ |
memcache.Rate of "set" commands. | gauge | command/ |
memcache.Number of connection structures allocated by the server. | gauge | - |
memcache.Number of open connections to this server. | gauge | connection |
memcache.Current number of items stored by the server. | gauge | item |
memcache.Rate at which delete commands result in items being removed. | gauge | hit/ |
memcache.Rate at which delete commands result in no items being removed. | gauge | miss/ |
memcache.Rate at which valid items are removed from cache to free memory for new items. | gauge | eviction/ |
memcache.Amount of memory being used by the server for storing items as a percentage of the max allowed. | gauge | percent |
memcache.Percentage of requested keys that are found present since the start of the memcache server. | gauge | percent |
memcache.Rate at which keys are requested and found present. | gauge | hit/ |
memcache.Rate at which keys are requested and not found. | gauge | miss/ |
memcache.Age of the oldest item in the LRU | gauge | second |
memcache.Rate at which items freed by the LRU Crawler | gauge | operation/ |
memcache.Rate at which worker threads had to directly pull LRU tails to find memory for a new item | gauge | operation/ |
memcache.Rate at which nonzero items which had an explicit expire time set had to be evicted from the LRU before expiring | gauge | eviction/ |
memcache.Rate at which items had to be evicted from the LRU before expiring | gauge | eviction/ |
memcache.Seconds since the last access for the most recent item evicted from this class | gauge | second |
memcache.Rate at which valid items evicted from the LRU which were never touched after being set | gauge | eviction/ |
memcache.Rate at which expired items reclaimed from the LRU which were never touched after being set | gauge | eviction/ |
memcache.Rate at which items found to be refcount locked in the LRU tail | gauge | item/ |
memcache.Rate at which items were moved from HOT or WARM into COLD | gauge | item/ |
memcache.Rate at which items were moved from COLD to WARM | gauge | item/ |
memcache.Rate at which active items were bumped within HOT or WARM | gauge | item/ |
memcache.Number of items presently stored in this slab class | gauge | item |
memcache.Number of items presently stored in the COLD LRU | gauge | item |
memcache.Number of items presently stored in the HOT LRU | gauge | item |
memcache.Number of items presently stored in the NOEXP class | gauge | item |
memcache.Number of items presently stored in the WARM LRU | gauge | item |
memcache.Rate at which the underlying slab class was unable to store a new item | gauge | error/ |
memcache.Rate at which entries were stored using memory from an expired entry | gauge | operation/ |
memcache.Rate at which memcache self-healed a slab with a refcount leak | gauge | operation/ |
memcache.Number of bytes this server is allowed to use for storage. | gauge | byte |
memcache.Rate at which the server has reached the max connection limit. | gauge | event/ |
memcache.Maximum number of connections to this server. | gauge | connection |
memcache.Default size of pointers on the host OS (generally 32 or 64) | gauge | bit |
memcache.Fraction of time the CPU spent executing kernel code on behalf of this server process. | gauge | fraction |
memcache.Fraction of user time the CPU spent executing this server process. | gauge | fraction |
memcache.Total number of slab classes allocated | gauge | occurrence |
memcache.Rate at which CAS commands failed to modify a value due to a bad CAS id | gauge | key/ |
memcache.Rate at which CAS commands modified this slab class | gauge | operation/ |
memcache.The amount of space each chunk uses | gauge | byte |
memcache.How many chunks exist within one page | gauge | buffer |
memcache.Rate at which set requests stored data in this slab class | gauge | command/ |
memcache.Rate at which decrs commands modified this slab class | gauge | operation/ |
memcache.Rate at which delete commands succeeded in this slab class | gauge | operation/ |
memcache.Chunks not yet allocated to items or freed via delete | gauge | buffer |
memcache.Number of free chunks at the end of the last allocated page | gauge | buffer |
memcache.Rate at which get requests were serviced by this slab class | gauge | hit/ |
memcache.Rate at which incrs commands modified this slab class | gauge | operation/ |
memcache.Number of bytes requested to be stored in this slab | gauge | byte |
memcache.Total number of chunks allocated to the slab class | gauge | buffer |
memcache.Total amount of memory allocated to slab pages | gauge | byte |
memcache.Total number of pages allocated to the slab class | gauge | page |
memcache.Rate of touches serviced by this slab class | gauge | operation/ |
memcache.How many chunks have been allocated to items | gauge | buffer |
memcache.Rate at which chunks have been allocated to items | gauge | buffer/ |
memcache.Number of threads used by the current Memcached server process. | gauge | thread |
memcache.Rate at which connections to this server are opened. | gauge | connection/ |
memcache.Total number of items stored by this server since it started. | gauge | item |
memcache.Number of seconds this server has been running. | gauge | second |
Official documentation
Metric names and descriptions are the official Datadog integration definitions (Copyright Datadog, Inc., BSD-3-Clause), reproduced unedited. The full license terms are on the About page.