The Custom Chart debug page in the Admin UI can be used to create one or multiple custom charts showing any combination of over 200 available metrics.

The definition of the customized dashboard is encoded in the URL. To share the dashboard with someone, send them the URL. Like any other URL, it can be bookmarked, sit in a pinned tab in your browser, etc.

Accessing the Custom Chart page

To access the Custom Chart debug page, access the Admin UI, and either:

  • Open http://localhost:8080/#/debug/chart in your browser (replacing localhost and 8080 with your node's host and port).

  • Click the gear icon on the left to access the Advanced Debugging Page. In the Reports section, click Custom TimeSeries Chart.

Using the Custom Chart page

CockroachDB Admin UI

On the Custom Chart page, you can set the time span for all charts, add new custom charts, and customize each chart:

  • To set the time span for the page, use the dropdown menu above the charts and select the desired time span.

  • To add a chart, click Add Chart and customize the new chart.

  • To customize each chart, use the Units dropdown menu to set the units to display. Then use the table below the chart to select the metrics being queried, and how they'll be combined and displayed. Options include:

    Column Description
    Metric Name How the system refers to this metric, e.g., sql.bytesin.
    Downsampler

    The "Downsampler" operation is used to combine the individual datapoints over the longer period into a single datapoint. We store one data point every ten seconds, but for queries over long time spans the backend lowers the resolution of the returned data, perhaps only returning one data point for every minute, five minutes, or even an entire hour in the case of the 30 day view.

    Options:

    • AVG: Returns the average value over the time period.
    • MIN: Returns the lowest value seen.
    • MAX: Returns the highest value seen.
    • SUM: Returns the sum of all values seen.

    Aggregator

    Used to combine data points from different nodes. It has the same operations available as the Downsampler.

    Options:

    • AVG: Returns the average value over the time period.
    • MIN: Returns the lowest value seen.
    • MAX: Returns the highest value seen.
    • SUM: Returns the sum of all values seen.

    Rate

    Determines how to display the rate of change during the selected time period.

    Options:

    • Normal: Returns the actual recorded value.
    • Rate: Returns the rate of change of the value per second.
    • Non-negative Rate: Returns the rate-of-change, but returns 0 instead of negative values. A large number of the stats we track are actually tracked as monotonically increasing counters so each sample is just the total value of that counter. The rate of change of that counter represents the rate of events being counted, which is usually what you want to graph. "Non-negative Rate" is needed because the counters are stored in memory, and thus if a node resets it goes back to zero (whereas normally they only increase).

    Source The set of nodes being queried, which is either:
    • The entire cluster.
    • A single, named node.
    Per Node If checked, the chart will show a line for each node's value of this metric.

Examples

Query user and system CPU usage

CockroachDB Admin UI

To compare system vs. userspace CPU usage, select the following values under Metric Name:

  • sys.cpu.sys.percent
  • sys.cpu.user.percent

The Y-axis label is the Count. A count of 1 represents 100% utilization. The Aggregator of Sum can show the count to be above 1, which would mean CPU utilization is greater than 100%.

Checking Per Node displays statistics for each node, which could show whether an individual node's CPU usage was higher or lower than the average.

Available metrics

Note:

This list is taken directly from the source code and is subject to change. Some of the metrics listed below are already visible in other areas of the Admin UI.

Name Help
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
clock-offset.meannanos Mean clock offset with other nodes in nanoseconds
clock-offset.stddevnanos Std dev clock offset with other nodes in nanoseconds
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
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)
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 old enough to be considered for removal
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.intentsconsidered Number of 'old' intents
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.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.removereplica Number of replica removals attempted by the replicate queue (typically in response to a rebalancer-initiated addition)
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.generated Number of generated snapshots
range.snapshots.normal-applied Number of applied snapshots
range.snapshots.preemptive-applied Number of applied pre-emptive snapshots
range.splits Number of range splits
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
rebalancing.writespersecond Number of keys written (i.e., applied by raft) per second to the store, averaged over a large time period as used in rebalancing decisions
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_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 rocksdb 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.
sql.bytesin Number of sql bytes received
sql.bytesout Number of sql bytes sent
sql.conns Number of active sql connections
sql.ddl.count Number of SQL DDL statements
sql.delete.count Number of SQL DELETE statements
sql.distsql.exec.latency Latency in nanoseconds of DistSQL statement execution
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 DistSQL request execution
sql.exec.latency Latency in nanoseconds of SQL statement execution
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.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.query.count Number of SQL queries
sql.select.count Number of SQL SELECT statements
sql.service.latency Latency in nanoseconds of SQL request execution
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.rollback.count Number of SQL transaction ROLLBACK statements
sql.update.count Number of SQL UPDATE statements
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

See also



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