Gc_num: Number of objects garbage collected

Gc_pause_time: Garbage collection pause time

Gc_pause_percent: Garbage collection pause percentage

Memory_usage: Memory (in GB) currently used by Couchbase

Memory_total: Memory (in GB) used by Couchbase over the total period of time

Memory_system: Memory (in GB) used by the system.

Cpu_user_percent: Percentage of CPU used by the user

Cpu_sys_percent: Percentage of CPU used by the system

Request_completed_count: Number of requests completed

Request_active_count: Number of active requests

Request_per_sec_1min: Requests per second in the last minute

Request_per_sec_5min: Requests per second in the last 5 minutes

Request_per_sec_15min: Requests per second in the last 15 minutes

Request_time_mean: Average request time

Request_time_median: Median request time

Request_time_80: 80th percentile request time

Request_time_95: 95th percentile request time

Request_time_99: 99th percentile request time

Request_prepared: Number of requests prepared

cpu_utilization_rate: Rate of CPU utilization

swap_total: Total amount of swap available

swap_used: Amount of swap used

mem_total: Total available memory

mem_free: Total amount of free memory

cmd_lookup cmd_set incr_misses + incr_hits decr_misses decr_hits delete_misses delete_hits ep_num_ops_del_meta ep_num_ops_get_meta ep_num_ops_set_meta vb_active_resident_items_ratio cmd_get cmd_set delete_hits vb_active_ops_create vb_replica_ops_create vb_pending_ops_create vb_active_ops_update vb_replica_ops_update vb_pending_ops_update ep_bg_fetched ep_data_read_failed ep_data_write_failed ep_tmp_oom_errors ep_bg_fetches cmd_lookup ep_diskqueue_fill ep_diskqueue_drain

cmd_get: Compare and Swap gets

couch_docs_actual_disk_size: The physical memory used in the node

couch_docs_data_size: Data size of couch documents associated with a node

couch_spatial_data_size: Size of object data for spatial views

couch_spatial_disk_size: Amount of disk space occupied by spatial views

couch_views_actual_disk_size: Amount of disk space occupied by Couch views

couch_views_data_size: Size of object data for Couch views

curr_items: Number of active items in memory

curr_items_tot: Total number of items

ep_bg_fetched: Disk reads per second

get_hits: Number of get hits

mem_used: Engine's total memory usage

ops: Spatial operations

vb_replica_curr_items: Number of in memory items

operations per second: The total amount of operations per second (including XDCR) to this bucket (measured from cmd_lookup + cmd_set + incr_misses + incr_hits + decr_misses + decr_hits + delete_misses + delete_hits + ep_num_ops_del_meta + ep_num_ops_get_meta + ep_num_ops_set_meta).

active docs resident %:The percentage of active items cached in RAM in this bucket (measured from vb_active_resident_items_ratio).

gets per sec:The number of reads (get operations) per second from this bucket (measured from cmd_get).

sets per sec:The number of writes (set operations) per second to this bucket (measured from cmd_get).

deletes per sec:The number of delete operations per second for this bucket (measured from delete_hits).

disk creates per sec:The number of new items created on disk per second for this bucket (measured from vb_active_ops_create + vb_replica_ops_create + vb_pending_ops_create).

disk updates per sec:The number of items updated on disk per second for this bucket (measured from vb_active_ops_update + vb_replica_ops_update + vb_pending_ops_update).

disk reads per sec:The number of reads per second from disk for this bucket (measured from ep_bg_fetched).

disk read failures:The number of disk read failures (measured from ep_data_read_failed).

disk write failures:The number of disk write failures (measured from ep_data_write_failed).

temp OOM per sec:The number of back-offs sent per second to client SDKs due to the out-of-memory situations from this bucket (measured from ep_tmp_oom_errors).

cache miss ratio:The percentage of reads per second to this bucket from disk as opposed to RAM (measured from ep_bg_fetches / cmd_lookup * 100).

disk queue fill rate:The total number of items per second being put on the disk queue in this bucket (measured from ep_diskqueue_fill).

disk queue drain rate:The total number of items per second being written to disk in this bucket (measured from ep_diskqueue_drain).

disk write queue:The number of items waiting to be written to disk in this bucket (measured from ep_queue_size+ep_flusher_todo).