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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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考题
单选题Which of the following metrics provided by the iostat report is used to initially determine if a disk is I/O bound？（）A
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toutC
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考题
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考题
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