[[metric:io_read_time]]

来自 pg_stat_io 或操作系统遥测的读取延迟。

被哪些等待事件引用

• IO/AioIoCompletion
• IO/AioIoUringExecution
• IO/AioIoUringSubmit
• IO/BasebackupRead
• IO/BasebackupSync
• IO/BasebackupWrite
• IO/BuffileRead
• IO/BuffileTruncate
• IO/BuffileWrite
• IO/ControlFileRead
• IO/ControlFileSync
• IO/ControlFileSyncUpdate
• IO/ControlFileWrite
• IO/ControlFileWriteUpdate
• IO/CopyFileCopy
• IO/CopyFileRead
• IO/CopyFileWrite
• IO/DataFileExtend
• IO/DataFileFlush
• IO/DataFileImmediateSync
• IO/DataFilePrefetch
• IO/DataFileRead
• IO/DataFileSync
• IO/DataFileTruncate
• IO/DataFileWrite
• IO/DsmAllocate
• IO/DsmFillZeroWrite
• IO/LockFileAddtodatadirRead
• IO/LockFileAddtodatadirSync
• IO/LockFileAddtodatadirWrite
• IO/LockFileCreateRead
• IO/LockFileCreateSync
• IO/LockFileCreateWrite
• IO/LockFileRecheckdatadirRead
• IO/LogicalChangesRead
• IO/LogicalChangesWrite
• IO/LogicalRewriteCheckpointSync
• IO/LogicalRewriteMappingSync
• IO/LogicalRewriteMappingWrite
• IO/LogicalRewriteSync
• IO/LogicalRewriteTruncate
• IO/LogicalRewriteWrite
• IO/LogicalSubxactRead
• IO/LogicalSubxactWrite
• IO/RelationMapRead
• IO/RelationMapReplace
• IO/RelationMapSync
• IO/RelationMapWrite
• IO/ReorderBufferRead
• IO/ReorderBufferWrite
• IO/ReorderLogicalMappingRead
• IO/ReplicationSlotRead
• IO/ReplicationSlotRestoreSync
• IO/ReplicationSlotSync
• IO/ReplicationSlotWrite
• IO/SlruFlushSync
• IO/SlruRead
• IO/SlruSync
• IO/SlruWrite
• IO/SnapbuildRead
• IO/SnapbuildSync
• IO/SnapbuildWrite
• IO/TimelineHistoryFileSync
• IO/TimelineHistoryFileWrite
• IO/TimelineHistoryRead
• IO/TimelineHistorySync
• IO/TimelineHistoryWrite
• IO/TwophaseFileRead
• IO/TwophaseFileSync
• IO/TwophaseFileWrite
• IO/VersionFileSync
• IO/VersionFileWrite
• IO/WalBootstrapSync
• IO/WalBootstrapWrite
• IO/WalCopyRead
• IO/WalCopySync
• IO/WalCopyWrite
• IO/WalInitSync
• IO/WalInitWrite
• IO/WalRead
• IO/WalSummaryRead
• IO/WalSummaryWrite
• IO/WalSync
• IO/WalSyncMethodAssign
• IO/WalWrite
• IO/WalsenderTimelineHistoryRead