单选题In an iostat report， which of the following options best describes the value of % iowait？（）A The amount of time taken to service an I/O interruptB The percentage of time CPU（s） are waiting for page insC The percentage of time the CPU9（s） are waiting on networkD The percentage of time the CPU（s） are waiting for outstanding disk I/O requests
单选题
In an iostat report， which of the following options best describes the value of % iowait？（）
A
The amount of time taken to service an I/O interrupt
B
The percentage of time CPU（s） are waiting for page ins
C
The percentage of time the CPU9（s） are waiting on network
D
The percentage of time the CPU（s） are waiting for outstanding disk I/O requests
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