In an iostat report， which of the following options best describes the value of % tm_act？（）
- A、 The total CPU usage for this drive
- B、 The bandwidth utilization of the indicated drive
- C、 It can best be represented by the equation （%iowait - %ioidle）
- D、 It can best be represented by the equation （kilobytes read/kilobytes written） *100
正确答案:B
答案解析:有
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