单项选择题

Which of the following commands should be used to monitor the average number of threads in the scheduler’s run queue for any given interval？（）

A. tprof
B. iostat
C. vmstat
D. filemon

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热门试题

单项选择题

Inordertodeterminehowefficientlyanapplicationisreadingandwritingdata，whichofthefollowingutilitieswillreportreadandwritesizesondiskI Orequests？（）

A. tprof
B. iostat
C. svmon
D. filemon

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. Using the vmstat output as shown in the exhibit， which of the following conclusions is most appropriate to draw about the I O bottleneck？（）

A. The bottleneck is network I/O.
B. The bottleneck is local disk I/O.
C. The bottleneck is paging space I/O.
D. The bottleneck is to a remote filesystem.