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SUMMARY_FILE_REDO_IOSTAT

SUMMARY_FILE_REDO_IOSTAT records statistics about all redo logs and WALs in MogDB.

Table 1 SUMMARY_FILE_REDO_IOSTAT columns

Name Type Description
phywrts numeric Number of times writing into the WAL buffer
phyblkwrt numeric Number of blocks written into the WAL buffer
writetim numeric 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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