FILE_REDO_IOSTAT

FILE_REDO_IOSTAT records statistics about redo logs (WALs) on the current node.

Table 1 FILE_REDO_IOSTAT columns

Name

Type

Description

phywrts

bigint

Number of times writing into the WAL buffer

phyblkwrt

bigint

Number of blocks written into the WAL buffer

writetim

bigint

Duration of writing into XLOG files (unit: μs)

avgiotim

bigint

Average duration of writing into XLOG files (unit: μs). avgiotim = writetim/phywrts

lstiotim

bigint

Duration of the last writing into XLOG files (unit: μs)

miniotim

bigint

Minimum duration of writing into XLOG files (unit: μs)

maxiowtm

bigint

Maximum duration of writing into XLOG files (unit: μs)

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