Metrics

As part of normal operation, CockroachDB continuously records metrics that track performance, latency, usage, and many other runtime indicators. These metrics are often useful in diagnosing problems, troubleshooting performance, or planning cluster infrastructure modifications. This page documents locations where metrics are exposed for analysis.

Available metrics

Name Description
addsstable.applications Number of SSTable ingestions applied (i.e., applied by Replicas)
addsstable.copies Number of SSTable ingestions that required copying files during application
addsstable.proposals Number of SSTable ingestions proposed (i.e., sent to Raft by lease holders)
build.timestamp Build information
capacity.available Available storage capacity
capacity.reserved Capacity reserved for snapshots
capacity.used Used storage capacity
capacity Total storage capacity
changefeed.aggregator_progress The earliest timestamp up to which any aggregator is guaranteed to have emitted all values for which it is responsible. Note: This metric may regress when a changefeed restarts due to a transient error. Consider tracking the changefeed.checkpoint_progress metric, which will not regress.
changefeed.checkpoint_progress The earliest timestamp of any changefeed's persisted checkpoint (values prior to this timestamp will never need to be re-emitted).
changefeed.failures Total number of changefeed jobs which have failed.
changefeed.lagging_ranges Number of ranges which are behind in a changefeed. This is calculated based on the changefeed options:
changefeed.running Number of currently running changefeeds, including sinkless.
clock-offset.meannanos Mean clock offset with other nodes in nanoseconds
clock-offset.stddevnanos Std dev clock offset with other nodes in nanoseconds
cluster.preserve-downgrade-option.last-updated Unix timestamp of last updated time for cluster.preserve_downgrade_option
compactor.compactingnanos Number of nanoseconds spent compacting ranges
compactor.compactions.failure Number of failed compaction requests sent to the storage engine
compactor.compactions.success Number of successful compaction requests sent to the storage engine
compactor.suggestionbytes.compacted Number of logical bytes compacted from suggested compactions
compactor.suggestionbytes.queued Number of logical bytes in suggested compactions in the queue
compactor.suggestionbytes.skipped Number of logical bytes in suggested compactions which were not compacted
distsender.batches.partial Number of partial batches processed
distsender.batches Number of batches processed
distsender.errors.notleaseholder Number of NotLeaseHolderErrors encountered
distsender.rpc.sent.local Number of local RPCs sent
distsender.rpc.sent.nextreplicaerror Number of RPCs sent due to per-replica errors
distsender.rpc.sent Number of RPCs sent
exec.error Number of batch KV requests that failed to execute on this node
exec.latency Latency in nanoseconds of batch KV requests executed on this node
exec.success Number of batch KV requests executed successfully on this node
gcbytesage Cumulative age of non-live data in seconds
gossip.bytes.received Number of received gossip bytes
gossip.bytes.sent Number of sent gossip bytes
gossip.connections.incoming Number of active incoming gossip connections
gossip.connections.outgoing Number of active outgoing gossip connections
gossip.connections.refused Number of refused incoming gossip connections
gossip.infos.received Number of received gossip Info objects
gossip.infos.sent Number of sent gossip Info objects
intentage Cumulative age of intents in seconds
intentbytes Number of bytes in intent KV pairs
intentcount Count of intent keys
jobs.changefeed.expired_pts_records Number of expired protected timestamp records owned by changefeed jobs.
jobs.{job_type}.currently_paused Number of {job_type} jobs currently considered paused. See the /_status/vars endpoint for all job types.
jobs.{job_type}.protected_age_sec The age of the oldest protected timestamp record protecting {job_type} jobs. See the /_status/vars endpoint for all job types.
jobs.{job_type}.protected_record_count Number of protected timestamp records held by {job_type} jobs. See the /_status/vars endpoint for all job types.
jobs.row_level_ttl.num_active_spans Number of active spans the TTL job is deleting from
jobs.row_level_ttl.span_total_duration Duration for processing a span during row level TTL
keybytes Number of bytes taken up by keys
keycount Count of all keys
lastupdatenanos Time in nanoseconds since Unix epoch at which bytes/keys/intents metrics were last updated
leases.epoch Number of replica leaseholders using epoch-based leases
leases.error Number of failed lease requests
leases.expiration Number of replica leaseholders using expiration-based leases
leases.success Number of successful lease requests
leases.transfers.error Number of failed lease transfers
leases.transfers.success Number of successful lease transfers
livebytes Number of bytes of live data (keys plus values), including unreplicated data
livecount Count of live keys
liveness.epochincrements Number of times this node has incremented its liveness epoch
liveness.heartbeatfailures Number of failed node liveness heartbeats from this node
liveness.heartbeatlatency Node liveness heartbeat latency in nanoseconds
liveness.heartbeatsuccesses Number of successful node liveness heartbeats from this node
liveness.livenodes Number of live nodes in the cluster (will be 0 if this node is not itself live)
node-id node ID with labels for advertised RPC and HTTP addresses
queue.consistency.pending Number of pending replicas in the consistency checker queue
queue.consistency.process.failure Number of replicas which failed processing in the consistency checker queue
queue.consistency.process.success Number of replicas successfully processed by the consistency checker queue
queue.consistency.processingnanos Nanoseconds spent processing replicas in the consistency checker queue
queue.gc.info.abortspanconsidered Number of AbortSpan entries eligible for removal based on their ages
queue.gc.info.abortspangcnum Number of AbortSpan entries fit for removal
queue.gc.info.abortspanscanned Number of transactions present in the AbortSpan scanned from the engine
queue.gc.info.clearrangefailed Number of failed ClearRange operations during GC
queue.gc.info.clearrangesuccess Number of successful ClearRange operations during GC
queue.gc.info.intentsconsidered Number of intents eligible to be considered because they are at least two hours old
queue.gc.info.intenttxns Number of associated distinct transactions
queue.gc.info.numkeysaffected Number of keys with GC'able data
queue.gc.info.pushtxn Number of attempted pushes
queue.gc.info.resolvesuccess Number of successful intent resolutions
queue.gc.info.resolvetotal Number of attempted intent resolutions
queue.gc.info.transactionspangcaborted Number of GC'able entries corresponding to aborted txns
queue.gc.info.transactionspangccommitted Number of GC'able entries corresponding to committed txns
queue.gc.info.transactionspangcpending Number of GC'able entries corresponding to pending txns
queue.gc.info.transactionspanscanned Number of entries in transaction spans scanned from the engine
queue.gc.pending Number of pending replicas in the GC queue
queue.gc.process.failure Number of replicas which failed processing in the GC queue
queue.gc.process.success Number of replicas successfully processed by the GC queue
queue.gc.processingnanos Nanoseconds spent processing replicas in the GC queue
queue.raftlog.pending Number of pending replicas in the Raft log queue
queue.raftlog.process.failure Number of replicas which failed processing in the Raft log queue
queue.raftlog.process.success Number of replicas successfully processed by the Raft log queue
queue.raftlog.processingnanos Nanoseconds spent processing replicas in the Raft log queue
queue.raftsnapshot.pending Number of pending replicas in the Raft repair queue
queue.raftsnapshot.process.failure Number of replicas which failed processing in the Raft repair queue
queue.raftsnapshot.process.success Number of replicas successfully processed by the Raft repair queue
queue.raftsnapshot.processingnanos Nanoseconds spent processing replicas in the Raft repair queue
queue.replicagc.pending Number of pending replicas in the replica GC queue
queue.replicagc.process.failure Number of replicas which failed processing in the replica GC queue
queue.replicagc.process.success Number of replicas successfully processed by the replica GC queue
queue.replicagc.processingnanos Nanoseconds spent processing replicas in the replica GC queue
queue.replicagc.removereplica Number of replica removals attempted by the replica gc queue
queue.replicate.addreplica Number of replica additions attempted by the replicate queue
queue.replicate.addreplica.error Number of failed replica additions processed by the replicate queue
queue.replicate.addreplica.success Number of successful replica additions processed by the replicate queue
queue.replicate.pending Number of pending replicas in the replicate queue
queue.replicate.process.failure Number of replicas which failed processing in the replicate queue
queue.replicate.process.success Number of replicas successfully processed by the replicate queue
queue.replicate.processingnanos Nanoseconds spent processing replicas in the replicate queue
queue.replicate.purgatory Number of replicas in the replicate queue's purgatory, awaiting allocation options
queue.replicate.rebalancereplica Number of replica rebalancer-initiated additions attempted by the replicate queue
queue.replicate.removedeadreplica Number of dead replica removals attempted by the replicate queue (typically in response to a node outage)
queue.replicate.removedeadreplica.error Number of failed dead replica removals processed by the replicate queue
queue.replicate.removedeadreplica.success Number of successful dead replica removals processed by the replicate queue
queue.replicate.removedecommissioningreplica.error Number of failed decommissioning replica removals processed by the replicate queue
queue.replicate.removedecommissioningreplica.success Number of successful decommissioning replica removals processed by the replicate queue
queue.replicate.removereplica Number of replica removals attempted by the replicate queue (typically in response to a rebalancer-initiated addition)
queue.replicate.removereplica.error Number of failed replica removals processed by the replicate queue
queue.replicate.removereplica.success Number of successful replica removals processed by the replicate queue
queue.replicate.replacedeadreplica.error Number of failed dead replica replacements processed by the replicate queue
queue.replicate.replacedeadreplica.success Number of successful dead replica replacements processed by the replicate queue
queue.replicate.replacedecommissioningreplica.error Number of failed decommissioning replica replacements processed by the replicate queue
queue.replicate.replacedecommissioningreplica.success Number of successful decommissioning replica replacements processed by the replicate queue
queue.replicate.transferlease Number of range lease transfers attempted by the replicate queue
queue.split.pending Number of pending replicas in the split queue
queue.split.process.failure Number of replicas which failed processing in the split queue
queue.split.process.success Number of replicas successfully processed by the split queue
queue.split.processingnanos Nanoseconds spent processing replicas in the split queue
queue.tsmaintenance.pending Number of pending replicas in the time series maintenance queue
queue.tsmaintenance.process.failure Number of replicas which failed processing in the time series maintenance queue
queue.tsmaintenance.process.success Number of replicas successfully processed by the time series maintenance queue
queue.tsmaintenance.processingnanos Nanoseconds spent processing replicas in the time series maintenance queue
raft.commandsapplied Count of Raft commands applied
raft.enqueued.pending Number of pending outgoing messages in the Raft Transport queue
raft.heartbeats.pending Number of pending heartbeats and responses waiting to be coalesced
raft.process.commandcommit.latency Latency histogram in nanoseconds for committing Raft commands
raft.process.logcommit.latency Latency histogram in nanoseconds for committing Raft log entries
raft.process.tickingnanos Nanoseconds spent in store.processRaft() processing replica.Tick()
raft.process.workingnanos Nanoseconds spent in store.processRaft() working
raft.rcvd.app Number of MsgApp messages received by this store
raft.rcvd.appresp Number of MsgAppResp messages received by this store
raft.rcvd.dropped Number of dropped incoming Raft messages
raft.rcvd.heartbeat Number of (coalesced, if enabled) MsgHeartbeat messages received by this store
raft.rcvd.heartbeatresp Number of (coalesced, if enabled) MsgHeartbeatResp messages received by this store
raft.rcvd.prevote Number of MsgPreVote messages received by this store
raft.rcvd.prevoteresp Number of MsgPreVoteResp messages received by this store
raft.rcvd.prop Number of MsgProp messages received by this store
raft.rcvd.snap Number of MsgSnap messages received by this store
raft.rcvd.timeoutnow Number of MsgTimeoutNow messages received by this store
raft.rcvd.transferleader Number of MsgTransferLeader messages received by this store
raft.rcvd.vote Number of MsgVote messages received by this store
raft.rcvd.voteresp Number of MsgVoteResp messages received by this store
raft.ticks Number of Raft ticks queued
raftlog.behind Number of Raft log entries followers on other stores are behind
raftlog.truncated Number of Raft log entries truncated
range.adds Number of range additions
range.raftleadertransfers Number of Raft leader transfers
range.removes Number of range removals
range.snapshots.recv-in-progress Number of non-empty snapshots in progress on a receiver store
range.snapshots.recv-queue Number of queued non-empty snapshots on a receiver store
range.snapshots.recv-total-in-progress Number of empty and non-empty snapshots in progress on a receiver store
range.snapshots.send-in-progress Number of non-empty snapshots in progress on a sender store
range.snapshots.send-queue Number of queued non-empty snapshots on a sender store
range.snapshots.send-total-in-progress Number of empty and non-empty in-progress snapshots on a sender store
range.snapshots.generated Number of generated snapshots
range.snapshots.normal-applied Number of applied snapshots
range.snapshots.preemptive-applied Number of applied preemptive snapshots
range.snapshots.rcvd-bytes Number of snapshot bytes received
range.snapshots.rebalancing.rcvd-bytes Number of rebalancing snapshot bytes received
range.snapshots.rebalancing.sent-bytes Number of rebalancing snapshot bytes sent
range.snapshots.recovery.rcvd-bytes Number of recovery snapshot bytes received
range.snapshots.recovery.sent-bytes Number of recovery snapshot bytes sent
range.snapshots.recv-in-progress Number of non-empty snapshots being received
range.snapshots.recv-queue Number of snapshots queued to receive
range.snapshots.recv-total-in-progress Number of total snapshots being received
range.snapshots.send-in-progress Number of non-empty snapshots being sent
range.snapshots.send-queue Number of snapshots queued to send
range.snapshots.send-total-in-progress Number of total snapshots being sent
range.snapshots.sent-bytes Number of snapshot bytes sent
range.snapshots.unknown.rcvd-bytes Number of unknown snapshot bytes received
range.snapshots.unknown.sent-bytes Number of unknown snapshot bytes sent
range.splits Number of range splits
rangekeybytes Number of bytes taken up by range keys (e.g., MVCC range tombstones)
rangekeycount Count of all range keys (e.g., MVCC range tombstones)
ranges.unavailable Number of ranges with fewer live replicas than needed for quorum
ranges.underreplicated Number of ranges with fewer live replicas than the replication target
ranges Number of ranges
rangevalbytes Number of bytes taken up by range key values (e.g., MVCC range tombstones)
rangevalcount Count of all range key values (e.g., MVCC range tombstones)
rebalancing.queriespersecond Number of kv-level requests received per second by the store, considering the last 30 minutes, as used in rebalancing decisions.
rebalancing.readbytespersecond Number of bytes written per second, considering the last 30 minutes.
rebalancing.readspersecond Number of keys read recently per second, considering the last 30 minutes.
rebalancing.requestspersecond Number of requests received recently per second, considering the last 30 minutes.
rebalancing.writebytespersecond Number of bytes read recently per second, considering the last 30 minutes.
rebalancing.writespersecond Number of keys written (i.e. applied by Raft) per second to the store, considering the last 30 minutes.
replicas.commandqueue.combinedqueuesize Number of commands in all CommandQueues combined
replicas.commandqueue.combinedreadcount Number of read-only commands in all CommandQueues combined
replicas.commandqueue.combinedwritecount Number of read-write commands in all CommandQueues combined
replicas.commandqueue.maxoverlaps Largest number of overlapping commands seen when adding to any CommandQueue
replicas.commandqueue.maxreadcount Largest number of read-only commands in any CommandQueue
replicas.commandqueue.maxsize Largest number of commands in any CommandQueue
replicas.commandqueue.maxtreesize Largest number of intervals in any CommandQueue's interval tree
replicas.commandqueue.maxwritecount Largest number of read-write commands in any CommandQueue
replicas.leaders_invalid_lease Number of replicas that are Raft leaders whose lease is invalid
replicas.leaders_not_leaseholders Number of replicas that are Raft leaders whose range lease is held by another store
replicas.leaders Number of Raft leaders
replicas.leaseholders Number of lease holders
replicas.quiescent Number of quiesced replicas
replicas.reserved Number of replicas reserved for snapshots
replicas Number of replicas
requests.backpressure.split Number of backpressured writes waiting on a Range split
requests.slow.commandqueue Number of requests that have been stuck for a long time in the command queue
requests.slow.distsender Number of requests that have been stuck for a long time in the dist sender
requests.slow.lease Number of requests that have been stuck for a long time acquiring a lease
requests.slow.raft Number of requests that have been stuck for a long time in Raft
rocksdb.block.cache.hits Count of block cache hits
rocksdb.block.cache.misses Count of block cache misses
rocksdb.block.cache.pinned-usage Bytes pinned by the block cache
rocksdb.block.cache.usage Bytes used by the block cache
rocksdb.bloom.filter.prefix.checked Number of times the bloom filter was checked
rocksdb.bloom.filter.prefix.useful Number of times the bloom filter helped avoid iterator creation
rocksdb.compactions Number of table compactions
rocksdb.flushes Number of table flushes
rocksdb.memtable.total-size Current size of memtable in bytes
rocksdb.num-sstables Number of storage engine SSTables
rocksdb.read-amplification Number of disk reads per query
rocksdb.table-readers-mem-estimate Memory used by index and filter blocks
round-trip-latency Distribution of round-trip latencies with other nodes in nanoseconds
security.certificate.expiration.ca Expiration timestamp in seconds since Unix epoch for the CA certificate. 0 means no certificate or error.
security.certificate.expiration.node Expiration timestamp in seconds since Unix epoch for the node certificate. 0 means no certificate or error.
schedules.BACKUP.protected_age_sec The age of the oldest protected timestamp record protected by BACKUP schedules.
schedules.BACKUP.protected_record_count Number of protected timestamp records held by BACKUP schedules.
sql.bytesin Number of SQL bytes received
sql.bytesout Number of SQL bytes sent
sql.conns Number of active SQL connections. For new recent connections, refer to sql.new_conns.
sql.ddl.count Number of SQL DDL statements
sql.delete.count Number of SQL DELETE statements
sql.distsql.exec.latency Latency in nanoseconds of SQL statement executions running on the distributed execution engine. This metric does not include the time to parse and plan the statement.
sql.distsql.flows.active Number of distributed SQL flows currently active
sql.distsql.flows.total Number of distributed SQL flows executed
sql.distsql.queries.active Number of distributed SQL queries currently active
sql.distsql.queries.total Number of distributed SQL queries executed
sql.distsql.select.count Number of DistSQL SELECT statements
sql.distsql.service.latency Latency in nanoseconds of SQL statement executions running on the distributed execution engine, including the time to parse and plan the statement.
sql.exec.latency Latency in nanoseconds of all SQL statement executions. This metric does not include the time to parse and plan the statement.
sql.guardrails.max_row_size_err.count Number of times a large row violates the corresponding sql.guardrails.max_row_size_err limit.
sql.guardrails.max_row_size_log.count Number of times a large row violates the corresponding sql.guardrails.max_row_size_log limit.
sql.insert.count Number of SQL INSERT statements
sql.mem.current Current sql statement memory usage
sql.mem.distsql.current Current sql statement memory usage for distsql
sql.mem.distsql.max Memory usage per sql statement for distsql
sql.mem.max Memory usage per sql statement
sql.mem.root.current Current sql statement memory usage for root
sql.mem.root.max Memory usage per sql statement for root
sql.mem.session.current Current sql session memory usage
sql.mem.session.max Memory usage per sql session
sql.mem.txn.current Current sql transaction memory usage
sql.mem.txn.max Memory usage per sql transaction
sql.misc.count Number of other SQL statements
sql.new_conns Number of new SQL connections in the previous second. For all connections, refer to sql.conns.
sql.pgwire_cancel.total Counter of the number of pgwire query cancel requests
sql.pgwire_cancel.ignored Counter of the number of pgwire query cancel requests that were ignored due to rate limiting
sql.pgwire_cancel.successful Counter of the number of pgwire query cancel requests that were successful
sql.query.count Number of SQL queries
sql.select.count Number of SQL SELECT statements
sql.service.latency Latency in nanoseconds of SQL request execution, including the time to parse and plan the statement.
sql.txn.abort.count Number of SQL transaction ABORT statements
sql.txn.begin.count Number of SQL transaction BEGIN statements
sql.txn.commit.count Number of SQL transaction COMMIT statements
sql.txn.contended.count Number of SQL transactions that experienced contention
sql.txn.isolation.executed_at.read_committed Number of times a READ COMMITTED transaction was executed.
sql.txn.isolation.upgraded_from.read_committed Number of times a READ COMMITTED transaction was automatically upgraded to a stronger isolation level.
sql.txn.rollback.count Number of SQL transaction ROLLBACK statements
sql.update.count Number of SQL UPDATE statements
storage.l0-level-score Compaction score of level 0
storage.l1-level-score Compaction score of level 1
storage.l2-level-score Compaction score of level 2
storage.l3-level-score Compaction score of level 3
storage.l4-level-score Compaction score of level 4
storage.l5-level-score Compaction score of level 5
storage.l6-level-score Compaction score of level 6
storage.l0-level-size Size of the SSTables in level 0
storage.l1-level-size Size of the SSTables in level 1
storage.l2-level-size Size of the SSTables in level 2
storage.l3-level-size Size of the SSTables in level 3
storage.l4-level-size Size of the SSTables in level 4
storage.l5-level-size Size of the SSTables in level 5
storage.l6-level-size Size of the SSTables in level 6
storage.keys.range-key-set.count Approximate count of RangeKeySet internal keys across the storage engine.
storage.marked-for-compaction-files Count of SSTables marked for compaction
sys.cgo.allocbytes Current bytes of memory allocated by cgo
sys.cgo.totalbytes Total bytes of memory allocated by cgo, but not released
sys.cgocalls Total number of cgo call
sys.cpu.sys.ns Total system cpu time in nanoseconds
sys.cpu.sys.percent Current system cpu percentage
sys.cpu.user.ns Total user cpu time in nanoseconds
sys.cpu.user.percent Current user cpu percentage
sys.fd.open Process open file descriptors
sys.fd.softlimit Process open FD soft limit
sys.gc.count Total number of GC runs
sys.gc.pause.ns Total GC pause in nanoseconds
sys.gc.pause.percent Current GC pause percentage
sys.go.allocbytes Current bytes of memory allocated by go
sys.go.totalbytes Total bytes of memory allocated by go, but not released
sys.goroutines Current number of goroutines
sys.rss Current process RSS
sys.uptime Process uptime in seconds
sysbytes Number of bytes in system KV pairs
syscount Count of system KV pairs
timeseries.write.bytes Total size in bytes of metric samples written to disk
timeseries.write.errors Total errors encountered while attempting to write metrics to disk
timeseries.write.samples Total number of metric samples written to disk
totalbytes Total number of bytes taken up by keys and values including non-live data
tscache.skl.read.pages Number of pages in the read timestamp cache
tscache.skl.read.rotations Number of page rotations in the read timestamp cache
tscache.skl.write.pages Number of pages in the write timestamp cache
tscache.skl.write.rotations Number of page rotations in the write timestamp cache
txn.abandons Number of abandoned KV transactions
txn.aborts Number of aborted KV transactions
txn.autoretries Number of automatic retries to avoid serializable restarts
txn.commits1PC Number of committed one-phase KV transactions
txn.commits Number of committed KV transactions (including 1PC)
txn.durations KV transaction durations in nanoseconds
txn.restarts.deleterange Number of restarts due to a forwarded commit timestamp and a DeleteRange command
txn.restarts.possiblereplay Number of restarts due to possible replays of command batches at the storage layer
txn.restarts.serializable Number of restarts due to a forwarded commit timestamp and isolation=SERIALIZABLE
txn.restarts.writetooold Number of restarts due to a concurrent writer committing first
txn.restarts Number of restarted KV transactions
valbytes Number of bytes taken up by values
valcount Count of all values

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