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    Memcached Metrics

    See also: Memcached integration information.

    memcache.avg_item_size

    The average size of an item.

    memcache.bytes

    The current number of bytes used by this server to store items.

    memcache.bytes_read_rate

    The rate of bytes read from the network by this server.

    memcache.bytes_written_rate

    The rate of bytes written to the network by this server.

    memcache.cas_badval_rate

    The rate at which keys are compared and swapped where the comparison (original) value did not match the supplied value.

    memcache.cas_hits_rate

    The rate at which keys are compared and swapped and found present.

    memcache.cas_misses_rate

    The rate at which keys are compared and swapped and not found present.

    memcache.cmd_flush_rate

    The rate of flush_all commands.

    memcache.cmd_get_rate

    The rate of get commands.

    memcache.cmd_set_rate

    The rate of set commands.

    memcache.connection_structures

    The number of connection structures allocated by the server.

    memcache.curr_connections

    The number of open connections to this server.

    memcache.curr_items

    The current number of items stored by the server.

    memcache.delete_hits_rate

    The rate at which delete commands result in items being removed.

    memcache.delete_misses_rate

    The rate at which delete commands result in no items being removed.

    memcache.evictions_rate

    The rate at which valid items are removed from cache to free memory for new items.

    memcache.fill_percent

    The amount of memory being used by the server for storing items as a percentage of the max allowed.

    memcache.get_hit_percent

    The percentage of requested keys that are found present since the start of the Memcached server.

    memcache.get_hits_rate

    The rate at which keys are requested and found present.

    memcache.get_misses_rate

    The rate at which keys are requested and not found.

    memcache.items.age

    The age of the oldest item in the LRU.

    memcache.items.crawler_reclaimed_rate

    The rate at which items freed by the LRU Crawler.

    memcache.items.direct_reclaims_rate

    The rate at which worker threads had to directly pull LRU tails to find memory for a new item.

    memcache.items.evicted_nonzero_rate

    The rate at which nonzero items which had an explicit expire time set had to be evicted from the LRU before expiring.

    memcache.items.evicted_rate

    The rate st which items had to be evicted from the LRU before expiring.

    memcache.items.evicted_time

    The number of seconds since the last access for the most recent item evicted from this class.

    memcache.items.evicted_unfetched_rate

    The rate at which valid items evicted from the LRU which were never touched after being set.

    memcache.items.expired_unfetched_rate

    The rate at which expired items reclaimed from the LRU which were never touched after being set.

    memcache.items.lrutail_reflocked_rate

    The rate at which items found to be refcount locked in the LRU tail.

    memcache.items.moves_to_cold_rate

    The rate at which items were moved from HOT or WARM into COLD.

    memcache.items.moves_to_warm_rate

    The rate at which items were moved from COLD to WARM.

    memcache.items.moves_within_lru_rate

    The rate at which active items were bumped within HOT or WARM.

    memcache.items.number

    The number of items presently stored in this slab class.

    memcache.items.number_cold

    The number of items presently stored in the COLD LRU.

    memcache.items.number_hot

    The number of items presently stored in the HOT LRU.

    memcache.items.number_noexp

    The number of items presently stored in the NOEXP class.

    memcache.items.number_warm

    The number of items presently stored in the WARM LRU.

    memcache.items.outofmemory_rate

    The rate at which the underlying slab class was unable to store a new item.

    memcache.items.reclaimed_rate

    The rate at which entries were stored using memory from an expired entry.

    memcache.items.tailrepairs_rate

    The rate at which Memcached self-healed a slab with a refcount leak.

    memcache.limit_maxbytes

    The number of bytes this server is allowed to use for storage.

    memcache.listen_disabled_num_rate

    The rate at which the server has reached the max connection limit.

    memcache.pointer_size

    The default size of pointers on the host OS (generally 32 or 64).

    memcache.rusage_system_rate

    The fraction of user time the CPU spent executing this server process.

    memcache.rusage_user_rate

    The fraction of time the CPU spent executing kernel code on behalf of this server process.

    memcache.slabs.active_slabs

    The total number of slab classes allocated.

    memcache.slabs.cas_badval_rate

    The rate at which CAS commands failed to modify a value due to a bad CAS ID.

    memcache.slabs.cas_hits_rate

    The rate at which CAS commands modified this slab class.

    memcache.slabs.chunk_size

    The amount of space each chunk uses.

    memcache.slabs.chunks_per_page

    The number of chunks that exist within one page.

    memcache.slabs.cmd_set_rate

    The rate at which set requests stored data in this slab class.

    memcache.slabs.decr_hits_rate

    The rate at which decrs commands modified this slab class.

    memcache.slabs.delete_hits_rate

    The rate at which delete commands succeeded in this slab class.

    memcache.slabs.free_chunks

    The number of chunks not yet allocated to items or freed via delete.

    memcache.slabs.free_chunks_end

    The number of free chunks at the end of the last allocated page.

    memcache.slabs.get_hits_rate

    The rate at which get requests were serviced by this slab class.

    memcache.slabs.incr_hits_rate

    The rate at which incrs commands modified this slab class.

    memcache.slabs.mem_requested

    The number of bytes requested to be stored in this slab.

    memcache.slabs.total_chunks

    The total number of chunks allocated to the slab class.

    memcache.slabs.total_malloced

    The total amount of memory allocated to slab pages.

    memcache.slabs.total_pages

    The total number of pages allocated to the slab class.

    memcache.slabs.touch_hits_rate

    The rate of touches serviced by this slab class.

    memcache.slabs.used_chunks

    The number of chunks that have been allocated to items.

    memcache.slabs.used_chunks_rate

    The rate at which chunks have been allocated to items.

    memcache.threads

    The number of threads used by the current Memcached server process.

    memcache.total_connections_rate

    The rate at which connections to this server are opened.

    memcache.total_items

    The total number of items stored by this server since it started.

    memcache.uptime

    The number of seconds this server has been running.