Custom Chart Debug Page

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

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

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

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 preemptive 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

• Troubleshooting Overview
• Support Resources
• Raw Status Endpoints