百度智能云
All Product Document

          Cloud Monitor

          • Cloud Monitor
          • >
          • Cloud Product Monitor List
          • >
          • Cloud Product Metric List
          • >
          • Database
          • >
          • Cloud Database DocDB for MongoDB

          Cloud Database DocDB for MongoDB

          Last Updated：2025-11-14

          Cloud database DocDB for MongoDB includes 2 types of monitor objects: Replica Set Instance (Replica) and Shard Set Instance (Shard). The list of monitoring metrics for each type is as follows:

          Replica Set Instance (Replica)

          Metric name (English) Metric name (Chinese) Unit Dimension Remarks
          ActiveReaders Clients holding global read lock Item InstanceId,NodeId
          ActiveWriters Clients holding global write lock Item InstanceId,NodeId
          CommandOPCount command operation Time/second InstanceId,NodeId
          ConnectionsUsage Instance connection utilization % InstanceId,NodeId
          CpuUsage CPU usage % InstanceId,NodeId
          CurrentConnections Instance connections Item InstanceId,NodeId
          CurrentQueueReaders Read lock wait queue length Item InstanceId,NodeId
          CurrentQueueWriters Write lock wait queue length Item InstanceId,NodeId
          DeletedDocumentCount Deleted files Item/second InstanceId,NodeId
          DeleteOPCount delete operation Time/second InstanceId,NodeId
          DiskUsage Disk space usage rate % InstanceId,NodeId
          DiskUsed Disk space usage MB InstanceId,NodeId
          GetMoreOPCount getmore operation Time/second InstanceId,NodeId
          InsertedDocumentCount Inserted files Item/second InstanceId,NodeId
          InsertOPCount insert operation Time/second InstanceId,NodeId
          MemoryUsage Memory usage % InstanceId,NodeId
          NetInBytes Ingress traffic Bytes/s InstanceId,NodeId
          NetOutBytes Egress traffic Bytes/s InstanceId,NodeId
          OpenCursorsCount Open Cursors count Item InstanceId,NodeId
          OplogReservedTime oplog retention period Second InstanceId,NodeId
          QueryOPCount query operation Time/second InstanceId,NodeId
          ReadConcurrentTransactionsAvailable Available read transaction parallelism Item InstanceId,NodeId
          ReadConcurrentTransactionsOut Read transaction parallelism Item InstanceId,NodeId
          ReplicationLag Master-slave latency Second InstanceId,NodeId
          ReturnDocumentCount Returned files Item/second InstanceId,NodeId
          ScanAndOrder Unindexed sort operations Time/second InstanceId,NodeId
          ScannedDocs Scanned files Item/second InstanceId,NodeId
          ScannedKeys Scanned indexes Item/second InstanceId,NodeId
          TimedoutCursorsCount Timeout count in the last minute Item InstanceId,NodeId
          UpdatedDocumentCount Updated files Item/second InstanceId,NodeId
          UpdateOPCount update operation Time/second InstanceId,NodeId
          WiredTigerCacheUsage WiredTigerCache utilization % InstanceId,NodeId
          WiredTigerDirtyCachePercent WiredTigerCache dirty page rate % InstanceId,NodeId
          WriteConcurrentTransactionsAvailable Available write transaction parallelism Item InstanceId,NodeId
          WriteConcurrentTransactionsOut Write transaction parallelism Item InstanceId,NodeId
          WriteConflict Write collisions Time/second InstanceId,NodeId

          Shard Set Instance (Shard)

          Metric name (English) Metric name (Chinese) Unit Dimension Remarks
          ActiveReaders Clients holding global read lock Item InstanceId,NodeId
          ActiveWriters Clients holding global write lock Item InstanceId,NodeId
          CommandOPCount command operation Time/second InstanceId,NodeId
          ConnectionsUsage Instance connection utilization % InstanceId,NodeId
          CpuUsage CPU usage % InstanceId,NodeId
          CurrentConnections Instance connections Item InstanceId,NodeId
          CurrentQueueReaders Read lock wait queue length Item InstanceId,NodeId
          CurrentQueueWriters Write lock wait queue length Item InstanceId,NodeId
          DeletedDocumentCount Deleted files Item/second InstanceId,NodeId
          DeleteOPCount delete operation Time/second InstanceId,NodeId
          DiskUsage Disk space usage rate % InstanceId,NodeId
          DiskUsed Disk space usage MB InstanceId,NodeId
          GetMoreOPCount getmore operation Time/second InstanceId,NodeId
          InsertedDocumentCount Inserted files Item/second InstanceId,NodeId
          InsertOPCount insert operation Time/second InstanceId,NodeId
          MemoryUsage Memory usage % InstanceId,NodeId
          NetInBytes Ingress traffic Bytes/s InstanceId,NodeId
          NetOutBytes Egress traffic Bytes/s InstanceId,NodeId
          OpenCursorsCount Open Cursors count Item InstanceId,NodeId
          OplogReservedTime oplog retention period Second InstanceId,NodeId
          QueryOPCount query operation Time/second InstanceId,NodeId
          ReadConcurrentTransactionsAvailable Available read transaction parallelism Item InstanceId,NodeId
          ReadConcurrentTransactionsOut Read transaction parallelism Item InstanceId,NodeId
          ReplicationLag Master-slave latency Second InstanceId,NodeId
          ReturnDocumentCount Returned files Item/second InstanceId,NodeId
          ScanAndOrder Unindexed sort operations Time/second InstanceId,NodeId
          ScannedDocs Scanned files Item/second InstanceId,NodeId
          ScannedKeys Scanned indexes Item/second InstanceId,NodeId
          TimedoutCursorsCount Timeout count in the last minute Item InstanceId,NodeId
          UpdatedDocumentCount Updated files Item/second InstanceId,NodeId
          UpdateOPCount update operation Time/second InstanceId,NodeId
          WiredTigerCacheUsage WiredTigerCache utilization % InstanceId,NodeId
          WiredTigerDirtyCachePercent WiredTigerCache dirty page rate % InstanceId,NodeId
          WriteConcurrentTransactionsAvailable Available write transaction parallelism Item InstanceId,NodeId
          WriteConcurrentTransactionsOut Write transaction parallelism Item InstanceId,NodeId
          WriteConflict Write collisions Time/second InstanceId,NodeId
          Previous
          Compute
          Next
          Cloud Database HBase