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？（）AtinBtoutC% idleD% tm_act
题目
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