# IO ## BaseBackupRead ### Description Waiting for base backup to read from a file. ### OS Resources Consumed - Disk I/O, CPU threads ## BaseBackupSync ### Description Waiting for data written by a base backup to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## BaseBackupWrite ### Description Waiting for base backup to write to a file. ### OS Resources Consumed - Disk I/O, CPU threads ## BufFileRead ### Description Waiting for a read from a buffered file. ### OS Resources Consumed - Disk I/O, CPU threads ## BufFileTruncate ### Description Waiting for a buffered file to be truncated. ### OS Resources Consumed - Disk I/O, CPU threads ## BufFileWrite ### Description Waiting for a write to a buffered file. ### OS Resources Consumed - Disk I/O, CPU threads ## ControlFileRead ### Description Waiting for a read from the pg_control file. ### OS Resources Consumed - Disk I/O, CPU threads ## ControlFileSync ### Description Waiting for the pg_control file to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## ControlFileSyncUpdate ### Description Waiting for an update to the pg_control file to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## ControlFileWrite ### Description Waiting for a write to the pg_control file. ### OS Resources Consumed - Disk I/O, CPU threads ## ControlFileWriteUpdate ### Description Waiting for a write to update the pg_control file. ### OS Resources Consumed - Disk I/O, CPU threads ## CopyFileRead ### Description Waiting for a read during a file copy operation. ### OS Resources Consumed - Disk I/O, CPU threads ## CopyFileWrite ### Description Waiting for a write during a file copy operation. ### OS Resources Consumed - Disk I/O, CPU threads ## DSMAllocate ### Description Waiting for a dynamic shared memory segment to be allocated. ### OS Resources Consumed - Memory, CPU threads ## DSMFillZeroWrite ### Description Waiting to fill a dynamic shared memory backing file with zeroes. ### OS Resources Consumed - Disk I/O, CPU threads ## DataFileExtend ### Description Waiting for a relation data file to be extended. ### OS Resources Consumed - Disk I/O, CPU threads ## DataFileFlush ### Description Waiting for a relation data file to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## DataFileImmediateSync ### Description Waiting for an immediate synchronization of a relation data file to durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## DataFilePrefetch ### Description Waiting for an asynchronous prefetch from a relation data file. ### OS Resources Consumed - Disk I/O, CPU threads ## DataFileRead ### Description Waiting for a read from a relation data file. ### OS Resources Consumed - Disk I/O, CPU threads ## DataFileSync ### Description Waiting for changes to a relation data file to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## DataFileTruncate ### Description Waiting for a relation data file to be truncated. ### OS Resources Consumed - Disk I/O, CPU threads ## DataFileWrite ### Description Waiting for a write to a relation data file. ### OS Resources Consumed - Disk I/O, CPU threads ## LockFileAddToDataDirRead ### Description Waiting for a read while adding a line to the data directory lock file. ### OS Resources Consumed - Disk I/O, CPU threads ## LockFileAddToDataDirSync ### Description Waiting for data to reach durable storage while adding a line to the data directory lock file. ### OS Resources Consumed - Disk I/O, CPU threads ## LockFileAddToDataDirWrite ### Description Waiting for a write while adding a line to the data directory lock file. ### OS Resources Consumed - Disk I/O, CPU threads ## LockFileCreateRead ### Description Waiting to read while creating the data directory lock file. ### OS Resources Consumed - Disk I/O, CPU threads ## LockFileCreateSync ### Description Waiting for data to reach durable storage while creating the data directory lock file. ### OS Resources Consumed - Disk I/O, CPU threads ## LockFileCreateWrite ### Description Waiting for a write while creating the data directory lock file. ### OS Resources Consumed - Disk I/O, CPU threads ## LockFileReCheckDataDirRead ### Description Waiting for a read during recheck of the data directory lock file. ### OS Resources Consumed - Disk I/O, CPU threads ## LogicalRewriteCheckpointSync ### Description Waiting for logical rewrite mappings to reach durable storage during a checkpoint. ### OS Resources Consumed - Disk I/O, CPU threads ## LogicalRewriteMappingSync ### Description Waiting for mapping data to reach durable storage during a logical rewrite. ### OS Resources Consumed - Disk I/O, CPU threads ## LogicalRewriteMappingWrite ### Description Waiting for a write of mapping data during a logical rewrite. ### OS Resources Consumed - Disk I/O, CPU threads ## LogicalRewriteSync ### Description Waiting for logical rewrite mappings to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## LogicalRewriteTruncate ### Description Waiting for truncate of mapping data during a logical rewrite. ### OS Resources Consumed - Disk I/O, CPU threads ## LogicalRewriteWrite ### Description Waiting for a write of logical rewrite mappings. ### OS Resources Consumed - Disk I/O, CPU threads ## RelationMapRead ### Description Waiting for a read of the relation map file. ### OS Resources Consumed - Disk I/O, CPU threads ## RelationMapReplace ### Description Waiting for durable replacement of a relation map file. ### OS Resources Consumed - Disk I/O, CPU threads ## RelationMapWrite ### Description Waiting for a write to the relation map file. ### OS Resources Consumed - Disk I/O, CPU threads ## ReorderBufferRead ### Description Waiting for a read during reorder buffer management. ### OS Resources Consumed - Disk I/O, CPU threads ## ReorderBufferWrite ### Description Waiting for a write during reorder buffer management. ### OS Resources Consumed - Disk I/O, CPU threads ## ReorderLogicalMappingRead ### Description Waiting for a read of a logical mapping during reorder buffer management. ### OS Resources Consumed - Disk I/O, CPU threads ## ReplicationSlotRead ### Description Waiting for a read from a replication slot control file. ### OS Resources Consumed - Disk I/O, CPU threads ## ReplicationSlotRestoreSync ### Description Waiting for a replication slot control file to reach durable storage while restoring it to memory. ### OS Resources Consumed - Disk I/O, CPU threads ## ReplicationSlotSync ### Description Waiting for a replication slot control file to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## ReplicationSlotWrite ### Description Waiting for a write to a replication slot control file. ### OS Resources Consumed - Disk I/O, CPU threads ## SLRUFlushSync ### Description Waiting for SLRU data to reach durable storage during a checkpoint or database shutdown. ### OS Resources Consumed - Disk I/O, CPU threads ## SLRURead ### Description Waiting for a read of an SLRU page. ### OS Resources Consumed - Disk I/O, CPU threads ## SLRUSync ### Description Waiting for SLRU data to reach durable storage following a page write. ### OS Resources Consumed - Disk I/O, CPU threads ## SLRUWrite ### Description Waiting for a write of an SLRU page. ### OS Resources Consumed - Disk I/O, CPU threads ## SnapbuildRead ### Description Waiting for a read of a serialized historical catalog snapshot. ### OS Resources Consumed - Disk I/O, CPU threads ## SnapbuildSync ### Description Waiting for a serialized historical catalog snapshot to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## SnapbuildWrite ### Description Waiting for a write of a serialized historical catalog snapshot. ### OS Resources Consumed - Disk I/O, CPU threads ## TimelineHistoryFileSync ### Description Waiting for a timeline history file received via streaming replication to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## TimelineHistoryFileWrite ### Description Waiting for a write of a timeline history file received via streaming replication. ### OS Resources Consumed - Disk I/O, CPU threads ## TimelineHistoryRead ### Description Waiting for a read of a timeline history file. ### OS Resources Consumed - Disk I/O, CPU threads ## TimelineHistorySync ### Description Waiting for a newly created timeline history file to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## TimelineHistoryWrite ### Description Waiting for a write of a newly created timeline history file. ### OS Resources Consumed - Disk I/O, CPU threads ## TwophaseFileRead ### Description Waiting for a read of a two-phase state file. ### OS Resources Consumed - Disk I/O, CPU threads ## TwophaseFileSync ### Description Waiting for a two-phase state file to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## TwophaseFileWrite ### Description Waiting for a write of a two-phase state file. ### OS Resources Consumed - Disk I/O, CPU threads ## VersionFileSync ### Description Waiting for the version file to reach durable storage while creating a database. ### OS Resources Consumed - Disk I/O, CPU threads ## VersionFileWrite ### Description Waiting for the version file to be written while creating a database. ### OS Resources Consumed - Disk I/O, CPU threads ## WALBootstrapSync ### Description Waiting for WAL to reach durable storage during bootstrapping. ### OS Resources Consumed - Disk I/O, CPU threads ## WALBootstrapWrite ### Description Waiting for a write of a WAL page during bootstrapping. ### OS Resources Consumed - Disk I/O, CPU threads ## WALCopyRead ### Description Waiting for a read when creating a new WAL segment by copying an existing one. ### OS Resources Consumed - Disk I/O, CPU threads ## WALCopySync ### Description Waiting for a new WAL segment created by copying an existing one to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## WALCopyWrite ### Description Waiting for a write when creating a new WAL segment by copying an existing one. ### OS Resources Consumed - Disk I/O, CPU threads ## WALInitSync ### Description Waiting for a newly initialized WAL file to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## WALInitWrite ### Description Waiting for a write while initializing a new WAL file. ### OS Resources Consumed - Disk I/O, CPU threads ## WALRead ### Description Waiting for a read from a WAL file. ### OS Resources Consumed - Disk I/O, CPU threads ## WALSenderTimelineHistoryRead ### Description Waiting for a read from a timeline history file during a walsender timeline command. ### OS Resources Consumed - Disk I/O, CPU threads ## WALSync ### Description Waiting for a WAL file to reach durable storage. ### OS Resources Consumed - Disk I/O, CPU threads ## WALSyncMethodAssign ### Description Waiting for data to reach durable storage while assigning a new WAL sync method. ### OS Resources Consumed - Disk I/O, CPU threads ## WALWrite ### Description Waiting for a write to a WAL file. ### OS Resources Consumed - Disk I/O, CPU threads