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 tinB toutC % idleD % tm_act
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
tin
B
tout
C
% idle
D
% tm_act
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解析：
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