MongoDB integration metrics

The official Datadog integration for monitoring MongoDB. It collects 328 metrics.

Definitions as of 2026-10-01

Official summary

Track read/write performance, most-used replicas, collection metrics, and more.

Metric types

gauge (value at a point in time): 316
count (occurrences in the interval): 12

Metrics

Descriptions are the official definitions, unedited.

Metric	Type	Unit
`mongodb.asserts.msgps`Number of message assertions raised per second.	gauge	assertion/second
`mongodb.asserts.regularps`Number of regular assertions raised per second.	gauge	assertion/second
`mongodb.asserts.rolloversps`Number of times that the rollover counters roll over per second. The counters rollover to zero every 2^30 assertions.	gauge	assertion/second
`mongodb.asserts.userps`Number of user assertions raised per second.	gauge	assertion/second
`mongodb.asserts.warningps`Number of warnings raised per second.	gauge	assertion/second
`mongodb.backgroundflushing.average_ms`Average time for each flush to disk. (deprecated in MongoDB 4.0)	gauge	millisecond
`mongodb.backgroundflushing.flushesps`Number of times the database has flushed all writes to disk. (deprecated in MongoDB 4.0)	gauge	flush/second
`mongodb.backgroundflushing.last_ms`Amount of time that the last flush operation took to complete. (deprecated in MongoDB 4.0)	gauge	millisecond
`mongodb.backgroundflushing.total_ms`Total number of time that the `mongod` processes have spent writing (i.e. flushing) data to disk. (deprecated in MongoDB 4.0)	gauge	millisecond
`mongodb.chunks.jumbo`Total number of 'jumbo' chunks in the mongo cluster.	gauge	-
`mongodb.chunks.total`Total number of chunks in the mongo cluster.	gauge	-
`mongodb.collection.avgobjsize`The size of the average object in the collection in bytes.	gauge	byte
`mongodb.collection.capped`Whether or not the collection is capped.	gauge	record
`mongodb.collection.collectionscans.nontailable`Number of times the collection was scanned without tailable cursor (deprecated).	gauge	scan
`mongodb.collection.collectionscans.nontailableps`Number of times the collection was scanned without tailable cursor per second.	gauge	scan/second
`mongodb.collection.collectionscans.total`Total number of times the collection was scanned (deprecated).	gauge	scan
`mongodb.collection.collectionscans.totalps`Total number of times the collection was scanned per second.	gauge	scan/second
`mongodb.collection.commands.latency`Total latency for commands on the collection.	gauge	microsecond
`mongodb.collection.commands.latency.avg`Average latency for commands on the collection.	gauge	microsecond
`mongodb.collection.commands.opsps`Number of command operations per second on the collection.	gauge	operation/second
`mongodb.collection.count`Total number of objects in the collection.	gauge	item
`mongodb.collection.indexes.accesses.ops`Number of time the index was used.	gauge	event
`mongodb.collection.indexes.accesses.opsps`Number of time the index was used per second.	gauge	event/second
`mongodb.collection.indexsizes`Size of index in bytes.	gauge	byte
`mongodb.collection.max`Maximum number of documents in a capped collection.	gauge	document
`mongodb.collection.maxsize`Maximum size of a capped collection in bytes.	gauge	byte
`mongodb.collection.nindexes`Total number of indices on the collection.	gauge	index
`mongodb.collection.reads.latency`Total latency for read operations on the collection.	gauge	microsecond
`mongodb.collection.reads.latency.avg`Average latency for read operations on the collection.	gauge	microsecond
`mongodb.collection.reads.opsps`Number of read operations per second on the collection.	gauge	operation/second
`mongodb.collection.size`The total uncompressed size in memory of all records in a collection. The size does not include the size of any indexes associated with the collection.	gauge	byte
`mongodb.collection.storagesize`Total storage space allocated to this collection for document storage.	gauge	byte
`mongodb.collection.totalindexsize`Total disk space used by all indexes created on this collection.	gauge	byte
`mongodb.collection.transactions.latency`Total latency for transactions on the collection.	gauge	microsecond
`mongodb.collection.transactions.latency.avg`Average latency for transactions on the collection.	gauge	microsecond
`mongodb.collection.transactions.opsps`Number of transaction operations per second on the collection.	gauge	operation/second
`mongodb.collection.writes.latency`Total latency for write operations on the collection.	gauge	microsecond
`mongodb.collection.writes.latency.avg`Average latency for write operations on the collection.	gauge	microsecond
`mongodb.collection.writes.opsps`Number of write operations per second on the collection.	gauge	operation/second
`mongodb.connection_pool.numascopedconnections`Number of active and stored outgoing scoped synchronous connections from the current mongos instance to other members of the sharded cluster or replica set.	gauge	connection
`mongodb.connection_pool.numclientconnections`Reports the number of active and stored outgoing synchronous connections from the current mongos instance to other members of the sharded cluster or replica set.	gauge	connection
`mongodb.connection_pool.totalavailable`Reports the total number of available outgoing connections from the current mongos instance to other members of the sharded cluster or replica set.	gauge	connection
`mongodb.connection_pool.totalcreatedps`Reports the total number of outgoing connections created per second by the current mongos instance to other members of the sharded cluster or replica set.	gauge	connection/second
`mongodb.connection_pool.totalinuse`Reports the total number of outgoing connections from the current mongod/mongos instance to other members of the sharded cluster or replica set that are currently in use.	gauge	connection
`mongodb.connection_pool.totalrefreshing`Reports the total number of outgoing connections from the current mongos instance to other members of the sharded cluster or replica set that are currently being refreshed.	gauge	connection
`mongodb.connections.available`Number of unused available incoming connections the database can provide.	gauge	connection
`mongodb.connections.current`Number of connections to the database server from clients.	gauge	connection
`mongodb.connections.totalcreated`Total number of connections created.	gauge	connection
`mongodb.cursors.timedout`Total number of cursors that have timed out since the server process started.	gauge	cursor
`mongodb.cursors.totalopen`Number of cursors that MongoDB is maintaining for clients	gauge	cursor
`mongodb.dbs`Total number of existing databases	gauge	item
`mongodb.dur.commits`Number of transactions written to the journal during the last journal group commit interval.	gauge	transaction
`mongodb.dur.commitsinwritelock`Count of the commits that occurred while a write lock was held.	gauge	commit
`mongodb.dur.compression`Compression ratio of the data written to the journal.	gauge	fraction
`mongodb.dur.earlycommits`Number of times MongoDB requested a commit before the scheduled journal group commit interval.	gauge	commit
`mongodb.dur.journaledmb`Amount of data written to journal during the last journal group commit interval.	gauge	mebibyte
`mongodb.dur.timems.commits`Amount of time spent for commits.	gauge	millisecond
`mongodb.dur.timems.commitsinwritelock`Amount of time spent for commits that occurred while a write lock was held.	gauge	millisecond
`mongodb.dur.timems.dt`Amount of time over which MongoDB collected the `dur.timeMS` data.	gauge	millisecond
`mongodb.dur.timems.preplogbuffer`Amount of time spent preparing to write to the journal.	gauge	millisecond
`mongodb.dur.timems.remapprivateview`Amount of time spent remapping copy-on-write memory mapped views.	gauge	millisecond
`mongodb.dur.timems.writetodatafiles`Amount of time spent writing to data files after journaling.	gauge	millisecond
`mongodb.dur.timems.writetojournal`Amount of time spent writing to the journal	gauge	millisecond
`mongodb.dur.writetodatafilesmb`Amount of data written from journal to the data files during the last journal group commit interval.	gauge	mebibyte
`mongodb.extra_info.heap_usage_bytesps`The total size in bytes of heap space used by the database process. Available on Unix/Linux systems only.	gauge	byte/second
`mongodb.extra_info.page_faultsps`Number of page faults per second that require disk operations.	gauge	fault/second
`mongodb.fsynclocked`Metric representing the fsynclock state of a database. 1 if it's locked and 0 if it's not.	gauge	-
`mongodb.globallock.activeclients.readers`Count of the active client connections performing read operations.	gauge	connection
`mongodb.globallock.activeclients.total`Total number of active client connections to the database.	gauge	connection
`mongodb.globallock.activeclients.writers`Count of active client connections performing write operations.	gauge	connection
`mongodb.globallock.currentqueue.readers`Number of operations that are currently queued and waiting for the read lock.	gauge	operation
`mongodb.globallock.currentqueue.total`Total number of operations queued waiting for the lock.	gauge	operation
`mongodb.globallock.currentqueue.writers`Number of operations that are currently queued and waiting for the write lock.	gauge	operation
`mongodb.globallock.locktime`Time since the database last started that the globalLock has been held.	gauge	millisecond
`mongodb.globallock.ratio`Ratio of the time that the globalLock has been held to the total time since it was created.	gauge	fraction
`mongodb.globallock.totaltime`Time since the database last started and created the global lock.	gauge	microsecond
`mongodb.indexcounters.accessesps`Number of times that operations have accessed indexes per second.	gauge	event/second
`mongodb.indexcounters.hitsps`Number of times per second that an index has been accessed and mongod is able to return the index from memory.	gauge	hit/second
`mongodb.indexcounters.missesps`Number of times per second that an operation attempted to access an index that was not in memory.	gauge	miss/second
`mongodb.indexcounters.missratio`Ratio of index hits to misses.	gauge	fraction
`mongodb.indexcounters.resetsps`Number of times per second the index counters have been reset.	gauge	event/second
`mongodb.locks.collection.acquirecount.exclusiveps`Number of times the collection lock type was acquired in the Exclusive (X) mode.	gauge	lock/second
`mongodb.locks.collection.acquirecount.intent_exclusiveps`Number of times the collection lock type was acquired in the Intent Exclusive (IX) mode.	gauge	lock/second
`mongodb.locks.collection.acquirecount.intent_sharedps`Number of times the collection lock type was acquired in the Intent Shared (IS) mode.	gauge	lock/second
`mongodb.locks.collection.acquirecount.sharedps`Number of times the collection lock type was acquired in the Shared (S) mode.	gauge	lock/second
`mongodb.locks.collection.acquirewaitcount.exclusiveps`Number of times the collection lock type acquisition in the Exclusive (X) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.collection.acquirewaitcount.sharedps`Number of times the collection lock type acquisition in the Shared (S) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.collection.timeacquiringmicros.exclusiveps`Wait time for the collection lock type acquisitions in the Exclusive (X) mode.	gauge	fraction
`mongodb.locks.collection.timeacquiringmicros.sharedps`Wait time for the collection lock type acquisitions in the Shared (S) mode.	gauge	fraction
`mongodb.locks.database.acquirecount.exclusiveps`Number of times the database lock type was acquired in the Exclusive (X) mode.	gauge	lock/second
`mongodb.locks.database.acquirecount.intent_exclusiveps`Number of times the database lock type was acquired in the Intent Exclusive (IX) mode.	gauge	lock/second
`mongodb.locks.database.acquirecount.intent_sharedps`Number of times the database lock type was acquired in the Intent Shared (IS) mode.	gauge	lock/second
`mongodb.locks.database.acquirecount.sharedps`Number of times the database lock type was acquired in the Shared (S) mode.	gauge	lock/second
`mongodb.locks.database.acquirewaitcount.exclusiveps`Number of times the database lock type acquisition in the Exclusive (X) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.database.acquirewaitcount.intent_exclusiveps`Number of times the database lock type acquisition in the Intent Exclusive (IX) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.database.acquirewaitcount.intent_sharedps`Number of times the database lock type acquisition in the Intent Shared (IS) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.database.acquirewaitcount.sharedps`Number of times the database lock type acquisition in the Shared (S) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.database.timeacquiringmicros.exclusiveps`Wait time for the database lock type acquisitions in the Exclusive (X) mode.	gauge	fraction
`mongodb.locks.database.timeacquiringmicros.intent_exclusiveps`Wait time for the database lock type acquisitions in the Intent Exclusive (IX) mode.	gauge	fraction
`mongodb.locks.database.timeacquiringmicros.intent_sharedps`Wait time for the database lock type acquisitions in the Intent Shared (IS) mode.	gauge	fraction
`mongodb.locks.database.timeacquiringmicros.sharedps`Wait time for the database lock type acquisitions in the Shared (S) mode.	gauge	fraction
`mongodb.locks.global.acquirecount.exclusiveps`Number of times the global lock type was acquired in the Exclusive (X) mode.	gauge	lock/second
`mongodb.locks.global.acquirecount.intent_exclusiveps`Number of times the global lock type was acquired in the Intent Exclusive (IX) mode.	gauge	lock/second
`mongodb.locks.global.acquirecount.intent_sharedps`Number of times the global lock type was acquired in the Intent Shared (IS) mode.	gauge	lock/second
`mongodb.locks.global.acquirecount.sharedps`Number of times the global lock type was acquired in the Shared (S) mode.	gauge	lock/second
`mongodb.locks.global.acquirewaitcount.exclusiveps`Number of times the global lock type acquisition in the Exclusive (X) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.global.acquirewaitcount.intent_exclusiveps`Number of times the global lock type acquisition in the Intent Exclusive (IX) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.global.acquirewaitcount.intent_sharedps`Number of times the global lock type acquisition in the Intent Shared (IS) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.global.acquirewaitcount.sharedps`Number of times the global lock type acquisition in the Shared (S) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.global.timeacquiringmicros.exclusiveps`Wait time for the global lock type acquisitions in the Exclusive (X) mode.	gauge	fraction
`mongodb.locks.global.timeacquiringmicros.intent_exclusiveps`Wait time for the global lock type acquisitions in the Intent Exclusive (IX) mode.	gauge	fraction
`mongodb.locks.global.timeacquiringmicros.intent_sharedps`Wait time for the global lock type acquisitions in the Intent Shared (IS) mode.	gauge	fraction
`mongodb.locks.global.timeacquiringmicros.sharedps`Wait time for the global lock type acquisitions in the Shared (S) mode.	gauge	fraction
`mongodb.locks.metadata.acquirecount.exclusiveps`Number of times the metadata lock type was acquired in the Exclusive (X) mode.	gauge	lock/second
`mongodb.locks.metadata.acquirecount.sharedps`Number of times the metadata lock type was acquired in the Shared (S) mode.	gauge	lock/second
`mongodb.locks.mmapv1journal.acquirecount.intent_exclusiveps`Number of times the MMAPv1 storage engine lock type was acquired in the Intent Exclusive (IX) mode.	gauge	lock/second
`mongodb.locks.mmapv1journal.acquirecount.intent_sharedps`Number of times the MMAPv1 storage engine lock type was acquired in the Intent Shared (IS) mode.	gauge	lock/second
`mongodb.locks.mmapv1journal.acquirewaitcount.intent_exclusiveps`Number of times the MMAPv1 storage engine lock type acquisition in the Intent Exclusive (IX) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.mmapv1journal.acquirewaitcount.intent_sharedps`Number of times the MMAPv1 storage engine lock type acquisition in the Intent Shared (IS) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.mmapv1journal.timeacquiringmicros.intent_exclusiveps`Wait time for the MMAPv1 storage engine lock type acquisitions in the Intent Exclusive (IX) mode.	gauge	fraction
`mongodb.locks.mmapv1journal.timeacquiringmicros.intent_sharedps`Wait time for the MMAPv1 storage engine lock type acquisitions in the Intent Shared (IS) mode.	gauge	fraction
`mongodb.locks.oplog.acquirecount.intent_exclusiveps`Number of times the oplog lock type was acquired in the Intent Exclusive (IX) mode.	gauge	lock/second
`mongodb.locks.oplog.acquirecount.sharedps`Number of times the oplog lock type was acquired in the Shared (S) mode.	gauge	lock/second
`mongodb.locks.oplog.acquirewaitcount.intent_exclusiveps`Number of times the oplog lock type acquisition in the Intent Exclusive (IX) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.oplog.acquirewaitcount.sharedps`Number of times the oplog lock type acquisition in the Shared (S) mode encountered waits because the locks were held in a conflicting mode.	gauge	wait/second
`mongodb.locks.oplog.timeacquiringmicros.intent_exclusiveps`Wait time for the oplog lock type acquisitions in the Intent Exclusive (IX) mode.	gauge	fraction
`mongodb.locks.oplog.timeacquiringmicros.sharedps`Wait time for the oplog lock type acquisitions in the Shared (S) mode.	gauge	fraction
`mongodb.mem.bits`Size of the in-memory storage engine.	gauge	mebibyte
`mongodb.mem.mapped`Amount of mapped memory by the database.	gauge	mebibyte
`mongodb.mem.mappedwithjournal`The amount of mapped memory, including the memory used for journaling.	gauge	mebibyte
`mongodb.mem.resident`Amount of memory currently used by the database process.	gauge	mebibyte
`mongodb.mem.virtual`Amount of virtual memory used by the mongod process.	gauge	mebibyte
`mongodb.metrics.commands.count.failedps`Number of times count failed	gauge	command/second
`mongodb.metrics.commands.count.total`Number of times count executed	gauge	command
`mongodb.metrics.commands.createindexes.failedps`Number of times createIndexes failed	gauge	command/second
`mongodb.metrics.commands.createindexes.total`Number of times createIndexes executed	gauge	command
`mongodb.metrics.commands.delete.failedps`Number of times delete failed	gauge	command/second
`mongodb.metrics.commands.delete.total`Number of times delete executed	gauge	command
`mongodb.metrics.commands.eval.failedps`Number of times eval failed	gauge	command/second
`mongodb.metrics.commands.eval.total`Number of times eval executed	gauge	command
`mongodb.metrics.commands.findandmodify.failedps`Number of times findAndModify failed	gauge	command/second
`mongodb.metrics.commands.findandmodify.total`Number of times findAndModify executed	gauge	command
`mongodb.metrics.commands.insert.failedps`Number of times insert failed	gauge	command/second
`mongodb.metrics.commands.insert.total`Number of times insert executed	gauge	command
`mongodb.metrics.commands.update.failedps`Number of times update failed	gauge	command/second
`mongodb.metrics.commands.update.total`Number of times update executed	gauge	command
`mongodb.metrics.cursor.open.notimeout`Number of open cursors with the option `DBQuery.Option.noTimeout` set to prevent timeout after a period of inactivity.	gauge	cursor
`mongodb.metrics.cursor.open.pinned`Number of pinned open cursors.	gauge	cursor
`mongodb.metrics.cursor.open.total`Number of cursors that MongoDB is maintaining for clients.	gauge	cursor
`mongodb.metrics.cursor.timedoutps`Number of cursors that time out, per second.	gauge	cursor/second
`mongodb.metrics.document.deletedps`Number of documents deleted per second.	gauge	document/second
`mongodb.metrics.document.insertedps`Number of documents inserted per second.	gauge	document/second
`mongodb.metrics.document.returnedps`Number of documents returned by queries per second.	gauge	document/second
`mongodb.metrics.document.updatedps`Number of documents updated per second.	gauge	document/second
`mongodb.metrics.getlasterror.wtime.numps`Number of getLastError operations per second with a specified write concern (i.e. w) that wait for one or more members of a replica set to acknowledge the write operation.	gauge	operation/second
`mongodb.metrics.getlasterror.wtime.totalmillisps`Fraction of time (ms/s) that the mongod has spent performing getLastError operations with write concern (i.e. w) that wait for one or more members of a replica set to acknowledge the write operation.	gauge	fraction
`mongodb.metrics.getlasterror.wtimeoutsps`Number of times per second that write concern operations have timed out as a result of the wtimeout threshold to getLastError	gauge	event/second
`mongodb.metrics.operation.fastmodps`Number of update operations per second that neither cause documents to grow nor require updates to the index.	gauge	operation/second
`mongodb.metrics.operation.idhackps`Number of queries per second that contain the _id field.	gauge	query/second
`mongodb.metrics.operation.scanandorderps`Number of queries per second that return sorted numbers that cannot perform the sort operation using an index.	gauge	query/second
`mongodb.metrics.operation.writeconflictsps`Number of times per second that write concern operations has encounter a conflict.	gauge	event/second
`mongodb.metrics.query.plancache.classic.hitsps`Number of times per second the query planner accesses the classic plan cache and finds a cached plan (requires MongoDB 7.0 and above).	gauge	operation/second
`mongodb.metrics.query.plancache.classic.missesps`Number of times per second the query planner accesses the classic plan cache and does not find a cached plan (requires MongoDB 7.0 and above).	gauge	operation/second
`mongodb.metrics.query.plancache.sbe.hitsps`Number of times per second the query planner accesses the slot-based execution engine plan cache and finds a cached plan (requires MongoDB 7.0 and above).	gauge	operation/second
`mongodb.metrics.query.plancache.sbe.missesps`Number of times per second the query planner accesses the slot-based execution engine plan cache and does not find a cached plan (requires MongoDB 7.0 and above).	gauge	operation/second
`mongodb.metrics.query.sort.spilltodiskps`The total number of writes per second to disk caused by sort stages (requires MongoDB 6.2 and above).	gauge	operation/second
`mongodb.metrics.query.sort.totalbytessortedps`The total amount of sorted data in bytes per second (requires MongoDB 6.2 and above).	gauge	byte/second
`mongodb.metrics.query.sort.totalkeyssortedps`The total number of keys used in sorts per second (requires MongoDB 6.2 and above).	gauge	key/second
`mongodb.metrics.queryexecutor.scannedobjectsps`Number of documents scanned per second during queries and query-plan evaluation.	gauge	operation/second
`mongodb.metrics.queryexecutor.scannedps`Number of index items scanned per second during queries and query-plan evaluation.	gauge	operation/second
`mongodb.metrics.record.movesps`Number of times per second documents move within the on-disk representation of the MongoDB data set.	gauge	operation/second
`mongodb.metrics.repl.apply.batches.numps`Number of batches applied across all databases per second.	gauge	operation/second
`mongodb.metrics.repl.apply.batches.totalmillisps`Fraction of time (ms/s) the mongod has spent applying operations from the oplog.	gauge	fraction
`mongodb.metrics.repl.apply.opsps`Number of oplog operations applied per second.	gauge	operation/second
`mongodb.metrics.repl.buffer.count`Number of operations in the oplog buffer.	gauge	operation
`mongodb.metrics.repl.buffer.maxsizebytes`Maximum size of the buffer.	gauge	byte
`mongodb.metrics.repl.buffer.sizebytes`Current size of the contents of the oplog buffer.	gauge	byte
`mongodb.metrics.repl.network.bytesps`Amount of data read from the replication sync source per second.	gauge	byte/second
`mongodb.metrics.repl.network.getmores.numps`Number of getmore operations per second.	gauge	operation/second
`mongodb.metrics.repl.network.getmores.totalmillisps`Fraction of time (ms/s) required to collect data from getmore operations.	gauge	fraction
`mongodb.metrics.repl.network.opsps`Number of operations read from the replication source per second.	gauge	operation/second
`mongodb.metrics.repl.network.readerscreatedps`Number of oplog query processes created per second.	gauge	process/second
`mongodb.metrics.repl.preload.docs.numps`Number of documents loaded per second during the pre-fetch stage of replication.	gauge	document/second
`mongodb.metrics.repl.preload.docs.totalmillisps`Fraction of time (ms/s) spent loading documents as part of the pre-fetch stage of replication.	gauge	fraction
`mongodb.metrics.repl.preload.indexes.numps`Number of index entries loaded by members before updating documents as part of the pre-fetch stage of replication.	gauge	document/second
`mongodb.metrics.repl.preload.indexes.totalmillisps`Fraction of time (ms/s) spent loading documents as part of the pre-fetch stage of replication.	gauge	fraction
`mongodb.metrics.ttl.deleteddocumentsps`Number of documents deleted from collections with a ttl index per second.	gauge	document/second
`mongodb.metrics.ttl.passesps`Number of times per second the background process removes documents from collections with a ttl index.	gauge	operation/second
`mongodb.network.bytesinps`The number of bytes that reflects the amount of network traffic received by this database.	gauge	byte/second
`mongodb.network.bytesoutps`The number of bytes that reflects the amount of network traffic sent from this database.	gauge	byte/second
`mongodb.network.numrequestsps`Number of distinct requests that the server has received.	gauge	request/second
`mongodb.opcounters.commandps`Total number of commands per second issued to the database.	gauge	command/second
`mongodb.opcounters.deleteps`Number of delete operations per second.	gauge	operation/second
`mongodb.opcounters.getmoreps`Number of getmore operations per second.	gauge	operation/second
`mongodb.opcounters.insertps`Number of insert operations per second.	gauge	operation/second
`mongodb.opcounters.queryps`Total number of queries per second.	gauge	query/second
`mongodb.opcounters.updateps`Number of update operations per second.	gauge	operation/second
`mongodb.opcountersrepl.commandps`Total number of replicated commands issued to the database per second.	gauge	command/second
`mongodb.opcountersrepl.deleteps`Number of replicated delete operations per second.	gauge	operation/second
`mongodb.opcountersrepl.getmoreps`Number of replicated getmore operations per second.	gauge	operation/second
`mongodb.opcountersrepl.insertps`Number of replicated insert operations per second.	gauge	operation/second
`mongodb.opcountersrepl.queryps`Total number of replicated queries per second.	gauge	query/second
`mongodb.opcountersrepl.updateps`Number of replicated update operations per second.	gauge	operation/second
`mongodb.oplatencies.commands.latency`Total combined latency for database commands.	gauge	microsecond
`mongodb.oplatencies.commands.latency.avg`Average latency for database commands.	gauge	microsecond
`mongodb.oplatencies.commands.latencyps`Total latency statistics for database commands per second (deprecated).	gauge	command/second
`mongodb.oplatencies.reads.latency`Total combined latency for read requests.	gauge	microsecond
`mongodb.oplatencies.reads.latency.avg`Average latency for read requests.	gauge	microsecond
`mongodb.oplatencies.reads.latencyps`Total latency statistics for read requests per second (deprecated).	gauge	operation/second
`mongodb.oplatencies.writes.latency`Total combined latency for write requests.	gauge	microsecond
`mongodb.oplatencies.writes.latency.avg`Average latency for write requests.	gauge	microsecond
`mongodb.oplatencies.writes.latencyps`Total latency statistics for write operations per second (deprecated).	gauge	operation/second
`mongodb.oplog.logsizemb`Total size of the oplog.	gauge	mebibyte
`mongodb.oplog.timediff`Oplog window: difference between the first and last operation in the oplog.	gauge	second
`mongodb.oplog.usedsizemb`Total amount of space used by the oplog.	gauge	mebibyte
`mongodb.queries.bytes_read`Bytes read from storage.	count	byte
`mongodb.queries.count`Number of query executions.	count	query
`mongodb.queries.cpu_time`CPU time consumed by queries.	count	nanosecond
`mongodb.queries.docs_examined`Number of documents examined.	count	document
`mongodb.queries.docs_returned`Number of documents returned.	count	document
`mongodb.queries.keys_examined`Number of index keys examined.	count	key
`mongodb.queries.read_time`I/O read time.	count	nanosecond
`mongodb.queries.sort_stage`Number of queries with in-memory sort stage.	count	query
`mongodb.queries.time`Total query execution time.	count	nanosecond
`mongodb.queries.time_to_response`Time to first response.	count	nanosecond
`mongodb.queries.used_disk`Number of queries that spilled to disk.	count	query
`mongodb.queries.working_time`Query working time.	count	nanosecond
`mongodb.replset.health`Member health value of the replica set: conveys if the member is up (i.e. 1) or down (i.e. 0).	gauge	-
`mongodb.replset.optime_lag`Delay between a write operation on the primary and its copy to a secondary. Computed only on primary and tagged by 'member'.	gauge	second
`mongodb.replset.replicationlag`Delay between a write operation on the primary and its copy to a secondary. Computed on each node and tagged by 'host', but may not be representative of cluster health. Negative values do not indicate that the secondary is ahead of the primary. To use a more up-to-date metric, use mongodb.replset.optime_lag instead.	gauge	second
`mongodb.replset.state`State of a replica that reflects its disposition within the set.	gauge	-
`mongodb.replset.votefraction`Fraction of votes a server will cast in a replica set election.	gauge	fraction
`mongodb.replset.votes`The number of votes a server will cast in a replica set election.	gauge	item
`mongodb.sessions.count`Number of active sessions for all users.	gauge	session
`mongodb.sharded_data_distribution.num_orphaned_docs`Number of orphaned documents in the shard.	gauge	document
`mongodb.sharded_data_distribution.num_owned_documents`Number of owned documents in the shard.	gauge	document
`mongodb.sharded_data_distribution.orphaned_size_bytes`Size of orphaned documents in the shard.	gauge	byte
`mongodb.sharded_data_distribution.owned_size_bytes`Size of owned documents in the shard.	gauge	byte
`mongodb.stats.avgobjsize`The average size of each document in bytes.	gauge	byte
`mongodb.stats.collections`Contains a count of the number of collections in that database.	gauge	-
`mongodb.stats.datasize`Total size of the data held in this database including the padding factor.	gauge	byte
`mongodb.stats.filesize`Total size of the data held in this database including the padding factor (only available with the mmapv1 storage engine).	gauge	byte
`mongodb.stats.freestoragesize`Total amount of free space allocated to all collections in the database for document storage.	gauge	byte
`mongodb.stats.fstotalsize`Total amount of all disk capacity on the filesystem where MongoDB stores data.	gauge	byte
`mongodb.stats.fsusedsize`Total amount of all disk space in use on the filesystem where MongoDB stores data.	gauge	byte
`mongodb.stats.indexes`Total number of indexes across all collections in the database.	gauge	index
`mongodb.stats.indexfreestoragesize`Total amount of free disk space allocated to all indexes in the database.	gauge	byte
`mongodb.stats.indexsize`Total size of all indexes created on this database.	gauge	byte
`mongodb.stats.numextents`Contains a count of the number of extents in the database across all collections.	gauge	-
`mongodb.stats.objects`Number of objects (documents) in the database across all collections.	gauge	object
`mongodb.stats.storagesize`Total amount of space allocated to collections in this database for document storage.	gauge	byte
`mongodb.stats.totalfreestoragesize`Total amount of free storage space allocated for both documents and indexes in all collections in the database.	gauge	byte
`mongodb.stats.totalsize`Total amount of disk space allocated for both documents and indexes in all collections in the database. Includes used and free storage space.	gauge	byte
`mongodb.stats.views`Contains a count of the number of views in the database.	gauge	-
`mongodb.system.cpu.cores`The total number of available logical processor cores.	gauge	core
`mongodb.system.cpu.percent`Total CPU usage percentage of the MongoDB process (only available on self-hosted MongoDB running on the same host as the Agent).	gauge	percent
`mongodb.system.mem.limit`The system memory (RAM) usage limit. For example running in a container may impose memory limits that are lower than the total system memory.	gauge	megabyte
`mongodb.system.mem.total`The total amount of system memory (RAM).	gauge	megabyte
`mongodb.tcmalloc.generic.current_allocated_bytes`Number of bytes used by the application.	gauge	byte
`mongodb.tcmalloc.generic.heap_size`Bytes of system memory reserved by TCMalloc.	gauge	byte
`mongodb.tcmalloc.tcmalloc.aggressive_memory_decommit`Status of aggressive memory decommit mode.	gauge	-
`mongodb.tcmalloc.tcmalloc.central_cache_free_bytes`Number of free bytes in the central cache.	gauge	byte
`mongodb.tcmalloc.tcmalloc.current_total_thread_cache_bytes`Number of bytes used across all thread caches.	gauge	byte
`mongodb.tcmalloc.tcmalloc.max_total_thread_cache_bytes`Upper limit on total number of bytes stored across all per-thread caches.	gauge	byte
`mongodb.tcmalloc.tcmalloc.pageheap_free_bytes`Number of bytes in free mapped pages in page heap.	gauge	byte
`mongodb.tcmalloc.tcmalloc.pageheap_unmapped_bytes`Number of bytes in free unmapped pages in page heap.	gauge	byte
`mongodb.tcmalloc.tcmalloc.spinlock_total_delay_ns`Spinlock delay time.	gauge	nanosecond
`mongodb.tcmalloc.tcmalloc.thread_cache_free_bytes`Number of free bytes in thread caches.	gauge	byte
`mongodb.tcmalloc.tcmalloc.transfer_cache_free_bytes`Number of free bytes that are waiting to be transferred between the central cache and a thread cache.	gauge	byte
`mongodb.uptime`Number of seconds that the mongos or mongod process has been active.	gauge	second
`mongodb.usage.commands.count`Number of commands since server start (deprecated)	gauge	command
`mongodb.usage.commands.countps`Number of commands per second	gauge	command/second
`mongodb.usage.commands.time`Total time spent performing commands in microseconds	gauge	microsecond
`mongodb.usage.getmore.count`Number of getmore since server start (deprecated)	gauge	fetch
`mongodb.usage.getmore.countps`Number of getmore per second	gauge	fetch/second
`mongodb.usage.getmore.time`Total time spent performing getmore in microseconds	gauge	microsecond
`mongodb.usage.insert.count`Number of inserts since server start (deprecated)	gauge	commit
`mongodb.usage.insert.countps`Number of inserts per second	gauge	commit/second
`mongodb.usage.insert.time`Total time spent performing inserts in microseconds	gauge	microsecond
`mongodb.usage.queries.count`Number of queries since server start (deprecated)	gauge	query
`mongodb.usage.queries.countps`Number of queries per second	gauge	query/second
`mongodb.usage.queries.time`Total time spent performing queries in microseconds	gauge	microsecond
`mongodb.usage.readlock.count`Number of read locks since server start (deprecated)	gauge	lock
`mongodb.usage.readlock.countps`Number of read locks per second	gauge	lock/second
`mongodb.usage.readlock.time`Total time spent performing read locks in microseconds	gauge	microsecond
`mongodb.usage.remove.count`Number of removes since server start (deprecated)	gauge	commit
`mongodb.usage.remove.countps`Number of removes per second	gauge	commit/second
`mongodb.usage.remove.time`Total time spent performing removes in microseconds	gauge	microsecond
`mongodb.usage.total.count`Number of operations since server start (deprecated)	gauge	command
`mongodb.usage.total.countps`Number of operations per second	gauge	command/second
`mongodb.usage.total.time`Total time spent holding locks in microseconds	gauge	microsecond
`mongodb.usage.update.count`Number of updates since server start (deprecated)	gauge	commit
`mongodb.usage.update.countps`Number of updates per second	gauge	commit/second
`mongodb.usage.update.time`Total time spent performing updates in microseconds	gauge	microsecond
`mongodb.usage.writelock.count`Number of write locks since server start (deprecated)	gauge	lock
`mongodb.usage.writelock.countps`Number of write locks per second	gauge	lock/second
`mongodb.usage.writelock.time`Total time spent performing write locks in microseconds	gauge	microsecond
`mongodb.wiredtiger.cache.application_thread_time_evicting_usecsps`Application thread time spent evicting pages per second.	gauge	fraction
`mongodb.wiredtiger.cache.bytes_currently_in_cache`Size of the data currently in cache.	gauge	byte
`mongodb.wiredtiger.cache.bytes_read_into_cache`Number of bytes read into the cache.	gauge	byte
`mongodb.wiredtiger.cache.bytes_written_from_cache`Number of bytes written from the cache.	gauge	byte
`mongodb.wiredtiger.cache.evict_page_attempts_by_eviction_serverps`Page eviction attempts by the eviction server per second.	gauge	page/second
`mongodb.wiredtiger.cache.evict_page_attempts_by_eviction_worker_threadsps`Page eviction attempts by eviction worker threads per second.	gauge	page/second
`mongodb.wiredtiger.cache.evict_page_failures_by_eviction_serverps`Page eviction failures by the eviction server per second.	gauge	page/second
`mongodb.wiredtiger.cache.evict_page_failures_by_eviction_worker_threadsps`Page eviction failures by eviction worker threads per second.	gauge	page/second
`mongodb.wiredtiger.cache.failed_eviction_of_pages_exceeding_the_in_memory_maximumps`Number of failed eviction of pages that exceeded the in-memory maximum, per second.	gauge	page/second
`mongodb.wiredtiger.cache.in_memory_page_splits`In-memory page splits.	gauge	split
`mongodb.wiredtiger.cache.maximum_bytes_configured`Maximum cache size.	gauge	byte
`mongodb.wiredtiger.cache.maximum_page_size_at_eviction`Maximum page size at eviction.	gauge	byte
`mongodb.wiredtiger.cache.modified_page_evict_attempts_by_application_threadsps`Modified page eviction attempts by application threads per second.	gauge	page/second
`mongodb.wiredtiger.cache.modified_page_evict_failures_by_application_threadsps`Modified page eviction failures by application threads per second.	gauge	page/second
`mongodb.wiredtiger.cache.modified_pages_evicted`Number of pages, that have been modified, evicted from the cache.	gauge	page
`mongodb.wiredtiger.cache.page_evict_attempts_by_application_threadsps`Page eviction attempts by application threads per second.	gauge	page/second
`mongodb.wiredtiger.cache.page_evict_failures_by_application_threadsps`Page eviction failures by application threads per second.	gauge	page/second
`mongodb.wiredtiger.cache.pages_currently_held_in_cache`Number of pages currently held in the cache.	gauge	page
`mongodb.wiredtiger.cache.pages_evicted_by_application_threadsps`Number of page evicted by application threads per second.	gauge	page/second
`mongodb.wiredtiger.cache.pages_evicted_exceeding_the_in_memory_maximumps`Number of pages evicted because they exceeded the cache in-memory maximum, per second.	gauge	page/second
`mongodb.wiredtiger.cache.pages_read_into_cache`Number of pages read into the cache.	gauge	page
`mongodb.wiredtiger.cache.pages_requested_from_cache`Number of pages requested from the cache.	gauge	page
`mongodb.wiredtiger.cache.pages_written_from_cache`Number of pages writtent from the cache	gauge	page
`mongodb.wiredtiger.cache.tracked_dirty_bytes_in_cache`Size of the dirty data in the cache.	gauge	byte
`mongodb.wiredtiger.cache.unmodified_pages_evicted`Number of pages, that were not modified, evicted from the cache.	gauge	page
`mongodb.wiredtiger.concurrenttransactions.read.available`Number of available read tickets (concurrent transactions) remaining.	gauge	ticket
`mongodb.wiredtiger.concurrenttransactions.read.out`Number of read tickets (concurrent transactions) in use.	gauge	ticket
`mongodb.wiredtiger.concurrenttransactions.read.totaltickets`Total number of read tickets (concurrent transactions) available.	gauge	ticket
`mongodb.wiredtiger.concurrenttransactions.write.available`Number of available write tickets (concurrent transactions) remaining.	gauge	ticket
`mongodb.wiredtiger.concurrenttransactions.write.out`Number of write tickets (concurrent transactions) in use.	gauge	ticket
`mongodb.wiredtiger.concurrenttransactions.write.totaltickets`Total number of write tickets (concurrent transactions) available.	gauge	ticket

Official documentation

Official documentation for the MongoDB integration

Metric names and descriptions are the official Datadog integration definitions (Copyright Datadog, Inc., BSD-3-Clause), reproduced unedited. The full license terms are on the About page.

Official summary

Metric types

Metrics

Official documentation

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