单项选择题
To examine the Exhibit， press the Exhibit button. While a user is compiling a C program， "vmstat 120 10" is run to determine the cause of a performance problem. Given the vmstat output as shown in the exhibit， which of the following conclusions is most appropriate to draw about the machine？（）
A. The machine has too many users.
B. The machine has an I/O bottleneck.
C. The machine has a CPU bottleneck.
D. The machine has a memory bottleneck.
相关考题
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单项选择题
Inaniostatreport，whichofthefollowingoptionsbestdescribesthevalueof%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 -
单项选择题
Whichofthefollowingcommandsshouldbeusedtomonitortheaveragenumberofthreadsinthescheduler’srunqueueforanygiveninterval？（）
A. tprof
B. iostat
C. vmstat
D. filemon -
单项选择题
Inordertodeterminehowefficientlyanapplicationisreadingandwritingdata，whichofthefollowingutilitieswillreportreadandwritesizesondiskI/Orequests？（）
A. tprof
B. iostat
C. svmon
D. filemon
