單項(xiàng)選擇題

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 should be drawn about the I/O bottleneck?()

A. There is a file I/O bottleneck.
B. There are too many open files.
C. There appears to be a buffer shortage.
D. There is a paging space I/O bottleneck.


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3.單項(xiàng)選擇題Which of the following performance tools can be used to determine if a system is thrashing?()

A. svmon and tprof
B. vmtune and schedtune
C. ps and schedtune
D. vmstat and topas

4.單項(xiàng)選擇題Which of the following commands is used to display detailed ethernet statistics for ent0?()

A. ifconfig ent0
B. entstat -d ent0
C. netstat -i
D. lscfg -vl ent0

5.單項(xiàng)選擇題When monitoring a system using /usr/bin/vmstat with an interval, the metrics under page pi and page po represent which of the following phrases?()

A. The pages to and from paging space per second
B. The page intervals and page operations per second
C. The page interrupts and page operations per second
D. The page segments transferred between pi and po devices per second

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