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
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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单选题A disk contains several logical volumes. Which of the following commands indicates how much data is read from or written to a particular logical volume on the same disk?（）A sar B iostat C svmon D filemon
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单选题Which of the following phrases is TRUE regarding monitoring disk I/O with iostat？（）A The iostat can only be run as the root userB There could be zero percent I/O wait and still be an I/O bottleneckC Any I/O wait time displayed in output of iostat is an indication of severe I/O bottlenecks D Running iostat without any arguments/parameters is sufficient for resolving I/O bottlenecks
单选题A system administrator ran the iostat command because of system performance problems. The following iostat output is provided： Based on the output， which of the following is insufficient？（）A CPUB MemoryC Paging spaceD Disk capacityX
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单选题Which iostat %iowait minimum threshold indicates a possible I/O bottleneck?（）A20% B40% C60% D80%
单选题Which of the following commands should be used to observe the number of system calls per second? （）A sar B iostat C svmon D vmstat
单选题All of the following types of statistics are reported by the iostat command tool EXCEPT:（）.A Free memoryB CPU statistics C Disk statistics D Terminal statistics
单选题Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system？（）A foo ； lsps -sB tprof -kx ； fooC iostat ； foo ； iostatD vmstat -s ； foo ； vmstat s