单选题Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem?()AfilemonBistatCvmstatDiostat

题目
单选题
Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem?()
A

 filemon

B

 istat

C

 vmstat

D

 iostat


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