Data Service Metrics
- UNDER CONSTRUCTION
A list of the metrics provided by the Data Service.
The following Data Service metrics can be queried by means of the REST APIs described in Getting Cluster Statistics.
See also the metrics provided in Metrics for All Services; which are indeed for all Couchbase-Server services, and so support the Data Service.
| This section is currently under construction. |
kv_curr_connections
Units: number
Labels: NA
Description: Number of currrent connections to this server including connections from external client SDKs, proxies, DCP requests and internal statistic gathering. (measured from curr_connections)
kv_curr_items
Units: number
Labels: bucket
Description: Number of active items in this bucket. (measured from curr_items)
kv_curr_items_tot
Units: number
Labels: bucket
Description: Total number of items in this bucket. (measured from curr_items_tot)
kv_dcp_backoff
Units: number
Labels: bucket, connection_type
Description: Number of backoffs for XDCR DCP connections
kv_dcp_connection_count
Units: number
Labels: bucket, connection_type
Description: Number of internal XDCR DCP connections in this bucket (measured from ep_dcp_xdcr_count)
kv_dcp_items_remaining
Units: number
Labels: bucket, connection_type
Description: Number of items remaining to be sent to consumer in this bucket (measured from ep_dcp_xdcr_items_remaining)
kv_dcp_items_sent
Units: number/sec
Labels: bucket, connection_type
Description: Number of items per second being sent for a producer for this bucket (measured from ep_dcp_xdcr_items_sent)
kv_dcp_producer_count
Units: number
Labels: bucket, connection_type
Description: Number of XDCR senders for this bucket (measured from ep_dcp_xdcr_producer_count)
kv_dcp_total_data_size_bytes
Units: bytes/sec
Labels: bucket, connection_type
Description: Number of bytes per second being sent for XDCR DCP connections for this bucket (measured from ep_dcp_xdcr_total_bytes)
kv_ep_ahead_exceptions
Units: number/sec
Labels: bucket
Description: Total number of ahead exceptions (when timestamp drift between mutations and local time has exceeded 5000000 μs) per second for all replica vBuckets.
kv_ep_bg_fetched
Units: number/sec
Labels: bucket
Description: Number of reads per second from disk for this bucket. (measured from ep_bg_fetched)
kv_ep_data_read_failed
Units: number
Labels: bucket
Description: Number of disk read failures. (measured from ep_data_read_failed)
kv_ep_data_write_failed
Units: number
Labels: bucket
Description: Number of disk write failures. (measured from ep_data_write_failed)
kv_ep_diskqueue_drain
Units: number/sec
Labels: bucket
Description: Total number of items per second being written to disk in this bucket (measured from ep_diskqueue_drain)
kv_ep_diskqueue_fill
Units: number/sec
Labels: bucket
Description: Total number of items per second being put on the disk queue in this bucket (measured from ep_diskqueue_fill)
kv_ep_diskqueue_items
Units: number
Labels: bucket
Description: Total number of items waiting (in queue) to be written to disk in this bucket (measured from ep_diskqueue_items)
kv_ep_mem_high_wat
Units: bytes
Labels: bucket
Description: High water mark (in bytes) for auto-evictions. (measured from ep_mem_high_wat)
kv_ep_mem_low_wat
Units: bytes
Labels: bucket
Description: Low water mark (in bytes) for auto-evictions. (measured from ep_mem_low_wat)
kv_ep_meta_data_memory_bytes
Units: bytes
Labels: bucket
Description: Bytes of item metadata consuming RAM in this bucket (measured from ep_meta_data_memory)
kv_ep_num_value_ejects
Units: number/sec
Labels: bucket
Description: Number of items per second being ejected to disk in this bucket. (measured from ep_num_value_ejects)
kv_ep_tmp_oom_errors
Units: number/sec
Labels: bucket
Description: Number of back-offs sent per second to client SDKs due to "out of memory" situations from this bucket. (measured from ep_tmp_oom_errors)
kv_ep_vb_total
Units: number
Labels: bucket
Description: Total number of vBuckets for this bucket. (measured from ep_vb_total)
kv_mem_used_bytes
Units: bytes
Labels: bucket
Description: Total memory used in bytes. (as measured from mem_used)
kv_num_vbuckets
Units: number
Labels: bucket
Description: Number of replica vBuckets in this bucket. (measured from vb_replica_num)
kv_ops
Units: number/sec
Labels: bucket
Description: Total operations per second (including XDCR) to this bucket. (measured from cmd_get + 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)
kv_read_bytes
Units: bytes/sec
Labels: bucket
Description: Bytes per second received in this bucket. (measured from bytes_read)
kv_vb_curr_items
Units: number
Labels: bucket
Description: Number of items in replica vBuckets in this bucket. (measured from vb_replica_curr_items)
kv_vb_eject
Units: number/sec
Labels: bucket
Description: Number of items per second being ejected to disk from replica vBuckets in this bucket. (measured from vb_replica_eject)
kv_vb_itm_memory_bytes
Units: bytes
Labels: bucket
Description: Amount of replica user data cached in RAM in this bucket. (measured from vb_replica_itm_memory)
kv_vb_meta_data_memory_bytes
Units: bytes
Labels: bucket
Description: Amount of replica item metadata consuming in RAM in this bucket. (measured from vb_replica_meta_data_memory)
kv_vb_ops_create
Units: number/sec
Labels: bucket
Description: New items per second being inserted into "replica" vBuckets in this bucket (measured from vb_replica_ops_create
kv_vb_queue_drain
Units: number/sec
Labels: bucket
Description: Number of replica items per second being written to disk in this bucket (measured from vb_replica_queue_drain)
kv_vb_queue_fill
Units: number/sec
Labels: bucket
Description: Number of replica items per second being put on the replica item disk queue in this bucket (measured from vb_replica_queue_fill)
kv_vb_queue_size
Units: number
Labels: bucket
Description: Number of replica items waiting to be written to disk in this bucket (measured from vb_replica_queue_size)
kv_vb_sync_write_aborted_count
Units: number/sec
Labels: bucket
Description: Number of aborted synchronous writes per second into active vBuckets in this bucket. (measured from vb_active_sync_write_aborted_count)
kv_vb_sync_write_accepted_count
Units: number/sec
Labels: bucket
Description: Number of accepted synchronous write per second into active vBuckets in this bucket. (measured from vb_active_sync_write_accepted_count)