Redis Enterprise Software Metrics¶
Redis Enterprise Software Data Source provides metrics available in the REST API.
Cluster¶
| Metric name | Unit | Feature | Description |
|---|---|---|---|
| available_flash | bytes | Flash | Sum of available flash in all nodes |
| available_flash_no_overbooking | bytes | Flash | Sum of available flash in all nodes without taking into account overbooking |
| available_memory | bytes | Sum of available memory in all nodes | |
| available_memory_no_overbooking | bytes | Sum of available memory in all nodes without taking into account overbooking | |
| avg_latency | micro-sec | Average latency of requests handled by all cluster endpoints | |
| bigstore_free | bytes | Flash | Sum of free space of back-end flash on all cluster nodes |
| bigstore_iops | ops/sec | Flash | Rate of i/o operations against back-end flash for all shards which are part of a flash based DB in cluster |
| bigstore_kv_ops | ops/sec | Flash | Rate of value read/write operations against back-end flash for all shards which are part of a flash based DB in cluster |
| bigstore_throughput | bytes/sec | Flash | Throughput i/o operations against back-end flash for all shards which are part of a flash based DB in cluster |
| conns | Total number of clients connected to all cluster endpoints | ||
| cpu_idle | 0-1 | CPU idle time portion, the value is weighted between all nodes based on number of cores in each node | |
| cpu_iowait | 0-1 | CPU IOwait time portion | |
| cpu_irqs | 0-1 | CPU IRQs time portion | |
| cpu_nice | 0-1 | CPU Nice time portion | |
| cpu_steal | 0-1 | CPU Steal time portion | |
| cpu_system | 0-1 | CPU time portion spent in kernel on cluster, the value is weighted between all nodes based on number of cores in each node | |
| cpu_user | 0-1 | CPU time portion spent by users-pace processes on cluster, the value is weighted between all nodes based on number of cores in each node | |
| egress_bytes | bytes/sec | Sum of rate of outgoing network traffic on all cluster nodes | |
| ephemeral_storage_avail | bytes | Sum of disk space available to RLEC processes on configured ephemeral disk on all cluster nodes | |
| ephemeral_storage_free | bytes | Sum of free disk space on configured ephemeral disk on all cluster nodes | |
| free_memory | bytes | Sum of free memory in all cluster nodes | |
| ingress_bytes | bytes/sec | Sum of rate of incoming network traffic on all cluster nodes | |
| persistent_storage_avail | bytes | Sum of disk space available to cluster processes on configured persistent disk on all cluster nodes | |
| persistent_storage_free | bytes | Sum of free disk space on configured persistent disk on all cluster nodes | |
| provisional_flash | bytes | Flash | Sum of provisional flash in all nodes |
| provisional_flash_no_overbooking | bytes | Flash | Sum of provisional flash in all nodes without taking into account overbooking |
| provisional_memory | bytes | Sum of provisional memory in all nodes | |
| provisional_memory_no_overbooking | bytes | Sum of provisional memory in all nodes without taking into account overbooking | |
| total_req | ops/sec | Request rate handled by all endpoints on cluster |
Database¶
| Metric name | Unit | Feature | Description |
|---|---|---|---|
| avg_latency | micro-sec | Average latency of operations on the DB | |
| avg_other_latency | micro-sec | Average latency of other (non read/write) operations | |
| avg_read_latency | micro-sec | Average latency of read operations | |
| avg_write_latency | micro-sec | Average latency of write operations | |
| big_del_flash | key access / sec | Flash | Rate of key deletes for keys that happen to be on flash |
| big_del_ram | key access / sec | Flash | Rate of key deletes for keys that happen to be in ram, this includes write misses (new keys created) |
| big_fetch_flash | key access / sec | Flash | Rate of key reads / updates for keys that happento be on flash |
| big_fetch_ram | key access / sec | Flash | Rate of key reads / updates for keys that happento be in RAM |
| big_io_ratio_flash | key access / sec | Flash | Rate of key operations on flash. can be used to compute ratio of io operations |
| big_io_ratio_redis | key access / sec | Flash | Rate of redis operations on keys. can be used to compute ratio of io operations |
| big_write_flash | key access / sec | Flash | Rate of key writes for keys that happen to be on flash |
| big_write_ram | key access / sec | Flash | Rate of key writes for keys that happen to be in RAM, this includes write misses (new keys created) |
| bigstore_io_dels | key access / sec | Flash | Rate of key deletions from flash |
| bigstore_io_read_bytes | bytes/sec | Flash | Throughput of i/o read operations against back-end flash for all shards of DB |
| bigstore_io_reads | key access / sec | Flash | Rate of key reads from flash |
| bigstore_io_write_bytes | bytes/sec | Flash | Throughput of i/o write operations against back-end flash for all shards of DB |
| bigstore_io_writes | key access / sec | Flash | Rate of key writes from flash |
| bigstore_iops | ops/sec | Flash | Rate of i/o operations against back-end flash for all shards of DB |
| bigstore_kv_ops | key access / sec | Flash | Rate of value read/write/del operations against back-end flash for all shards of DB |
| bigstore_objs_flash | Flash | Value count on flash | |
| bigstore_objs_ram | Flash | Value count in RAM | |
| bigstore_throughput | bytes/sec | Flash | Throughput of i/o operations against back-end flash for all shards of DB |
| conns | Number of client connections to DB’s endpoints | ||
| disk_frag_ratio | Flash | Flash fragmentation ratio (used / required) | |
| egress_bytes | bytes/sec | Rate of outgoing network traffic to DB’s endpoint | |
| evicted_objects | evictions/sec | Rate of key evictions from DB | |
| expired_objects | evictions/sec | Rate keys expired in DB | |
| fork_cpu_system | % cores utilization in system mode for all redis shard fork child processes of this database | ||
| fork_cpu_user | % cores utilization in user mode for all redis shard fork child processes of this database | ||
| ingress_bytes | bytes/sec | Rate of incoming network traffic to DB’s endpoint | |
| instantaneous_ops_per_sec | ops/sec | Request rate handled by all shards of DB | |
| last_req_time | Last request time received to DB, when not available returns 1/1/1970 | ||
| last_res_time | Last response time received from DB, when not available returns 1/1/1970 | ||
| main_thread_cpu_system | % cores utilization in system mode for all redis shard main threads of this database | ||
| main_thread_cpu_user | % cores utilization in user mode for all redis shard main threads of this database | ||
| mem_frag_ratio | RAM fragmentation ratio (RSS / allocated RAM) | ||
| mem_not_counted_for_evict | bytes | Portion of used_memory that’s not counted for eviction and OOM error | |
| mem_size_lua | bytes | Redis lua scripting heap size | |
| monitor_sessions_count | Number of client connected in monitor mode to the DB | ||
| no_of_expires | Number of volatile keys in the DB | ||
| no_of_keys | Number of keys in DB | ||
| other_req | ops/sec | Rate of other (non read/write) requests on DB | |
| other_res | ops/sec | Rate of other (non read/write) responses on DB | |
| pubsub_channels | Count the pub/sub channels with subscribed clients | ||
| pubsub_patterns | Count the pub/sub patterns with subscribed clients | ||
| ram_overhead | bytes | Flash | Non values RAM overhead |
| read_hits | ops/sec | Rate of read operations accessing an existing key | |
| read_misses | ops/sec | Rate of read operations accessing a non-existing key | |
| read_req | ops/sec | Rate of read requests on DB | |
| read_res | ops/sec | Rate of read responses on DB | |
| shard_cpu_system | % cores utilization in system mode for all redis shard processes of this database | ||
| shard_cpu_user | % cores utilization in user mode for the redis shard process | ||
| total_connections_received | connections/sec | Rate of new client connections to DB | |
| total_req | ops/sec | Rate of all requests on DB | |
| total_res | ops/sec | Rate of all responses on DB | |
| used_bigstore | bytes | Flash | Flash used by db |
| used_memory | bytes | Memory used by db | |
| used_ram | bytes | Flash | RAM used by db |
| write_hits | ops/sec | Rate of write operations accessing an existing key | |
| write_misses | ops/sec | Rate of write operations accessing a non- existing key | |
| write_req | ops/sec | Rate of write requests on DB | |
| write_res | ops/sec | Rate of write responses on DB |
Node¶
| Metric name | Unit | Feature | Description |
|---|---|---|---|
| available_flash | bytes | Flash | Available flash in node |
| available_flash_no_overbooking | bytes | Flash | Available flash in node without taking into account overbooking |
| available_memory | bytes | Available ram in node | |
| available_memory_no_overbooking | bytes | Available ram in node without taking into account overbooking | |
| avg_latency | micro-sec | Average latency of requests handled by endpoints on node | |
| bigstore_free | bytes | Flash | Free space of back-end flash (used by flash DB’s |
| bigstore_iops | ops/sec | Flash | Rate of i/o operations against back-end flash for all shards which are part of a flash based DB on node |
| bigstore_kv_ops | ops/sec | Flash | Rate of value read/write operations against back-end flash for all shards which are part of a flash based DB on node |
| bigstore_throughput | bytes/sec | Flash | Throughput of i/o operations against back-end flash for all shards which are part of a flash based DB on node |
| conns | Number of clients connected to endpoints on node | ||
| cpu_idle | 0-1 | CPU idle time portion | |
| cpu_iowait | 0-1 | CPU IOwait time portion | |
| cpu_irqs | 0-1 | CPU IRQs time portion | |
| cpu_nice | 0-1 | CPU Nice time portion | |
| cpu_steal | 0-1 | CPU Steal time portion | |
| cpu_system | 0-1 | CPU time portion spent in kernel | |
| cpu_user | 0-1 | CPU time portion spent by users-pace processes | |
| cur_aof_rewrites | Number of aof rewrites that are currently performed by shards on this node | ||
| egress_bytes | bytes/sec | Rate of outgoing network traffic to node | |
| ephemeral_storage_avail | bytes | Disk space available to RLEC processes on configured ephemeral disk | |
| ephemeral_storage_free | bytes | Free disk space on configured ephemeral disk | |
| free_memory | bytes | Free memory in node | |
| ingress_bytes | bytes/sec | Rate of incoming network traffic to node | |
| persistent_storage_avail | bytes | Disk space available to RLEC processes on configured persistent disk | |
| persistent_storage_free | bytes | Free disk space on configured persistent disk | |
| provisional_flash | bytes | Flash | Amount of flash available for new shards on this node, taking into account overbooking, max redis servers, reserved flash and provision and migration thresholds |
| provisional_flash_no_overbooking | bytes | Flash | Amount of flash available for new shards on this node, max redis servers, reserved flash and provision and migration thresholds |
| provisional_memory | bytes | Amount of ram available for new shards on this node, taking into account overbooking, max redis servers, reserved memory and provision and migration thresholds | |
| provisional_memory_no_overbooking | bytes | Amount of ram available for new shards on this node, max redis servers, reserved memory and provision and migration thresholds | |
| total_req | ops/sec | Request rate handled by endpoints on node |