RedisDB Metrics

Note: Sysdig follows the Prometheus-compabtible naming convention for both metrics and labels as opposed to the previous statsd-compatible, legacy Sysdig naming convention. However, this page still shows metrics in the legacy Sysdig naming convention. Until this page is updated, see Metrics and Label Mapping for the mapping between Sysdig legacy and Prometheus naming conventions.

See RedisDB integration information.

redis.aof.buffer_length

The size of the AOF buffer.

redis.aof.last_rewrite_time

The duration of the last AOF rewrite.

redis.aof.rewrite

A flag indicating that a AOF rewrite operation is on-going.

redis.clients.biggest_input_buf

The biggest input buffer among current client connections.

redis.clients.blocked

The number of connections waiting on a blocking call.

redis.clients.longest_output_list

The longest output list among current client connections.

redis.command.calls

The number of times a redis command has been called. The commands are tagged with command (for example, command:append).

redis.command.usec_per_call

The CPU time consumed per redis command call. The commands are tagged with command (for example, command:append).

redis.cpu.sys

The system CPU consumed by the Redis server.

redis.cpu.sys_children

The system CPU consumed by the background processes.

redis.cpu.user

The user CPU consumed by the Redis server.

redis.cpu.user_children

The user CPU consumed by the background processes.

redis.expires

The number of keys that have expired.

redis.expires.percent

The percentage of total keys that have been expired.

redis.info.latency_ms

The latency of the redis INFO command.

redis.key.length

The number of elements in a given key. Each element is tagged by key (for example, key:mykeyname).

redis.keys

The total number of keys.

redis.keys.evicted

The total number of keys evicted due to the maxmemory limit.

redis.keys.expired

The total number of keys expired from the database.

redis.mem.fragmentation_ratio

The ratio between used_memory_rss and used_memory.

redis.mem.lua

The amount of memory used by the Lua engine.

redis.mem.maxmemory

The maximum amount of memory allotted to the RedisDB system.

redis.mem.overhead

Sum of all the overheads allocated by Redis for managing its internal data structures.

Supported by Sysdig Agent v9.7.0 and above.

redis.mem.peak

The peak amount of memory used by Redis.

redis.mem.startup

Amount of memory consumed by Redis while initializing.

Supported by Sysdig Agent v9.7.0 and above.

redis.mem.rss

The amount of memory that Redis allocated as seen by the operating system.

redis.mem.used

The amount of memory allocated by Redis.

redis.net.clients

The number of connected clients (excluding slaves).

redis.net.commands

The number of commands processed by the server.

redis.net.commands.instantaneous_ops_per_sec

The number of commands processed by the server per second.

redis.net.rejected

The number of rejected connections.

redis.net.slaves

The number of connected slaves.

redis.perf.latest_fork_usec

The duration of the latest fork.

redis.persist

The number of keys persisted. The formula for this metric is redis.keys - redis.expires.

redis.persist.percent

Percentage of total keys that are persisted.

redis.pubsub.channels

The number of active pubsub channels.

redis.pubsub.patterns

The number of active pubsub patterns.

redis.rdb.bgsave

Determines whether a bgsave is in progress. The value is one if a bgsave is in progress, and zero at all other times.

redis.rdb.changes_since_last

The number of changes since the last background save.

redis.rdb.last_bgsave_time

The duration of the last bg_save operation.

redis.replication.backlog_histlen

The amount of data in the backlog sync buffer.

redis.replication.delay

The replication delay in offsets.

redis.replication.last_io_seconds_ago

The amount of time since the last interaction with master.

redis.replication.master_link_down_since_seconds

The amount of time that the master link has been down.

redis.replication.master_repl_offset

The replication offset reported by the master.

redis.replication.slave_repl_offset

The replication offset reported by the slave.

redis.replication.sync

Determines whether a sync is in progress. The value is one if a sync is in progress, and zero at all other times.

redis.replication.sync_left_bytes

The amount of data left before syncing is complete.

redis.slowlog.micros.95percentile

The 95th percentile of the duration of queries reported in the slow log.

redis.slowlog.micros.avg

The average duration of queries reported in the slow log.

redis.slowlog.micros.count

The rate of queries reported in the slow log.

redis.slowlog.micros.max

The maximum duration of queries reported in the slow log.

redis.slowlog.micros.median

The median duration of queries reported in the slow log.

redis.stats.keyspace_hits

The total number of successful lookups in the database.

redis.stats.keyspace_misses

The total number of missed lookups in the database.