单项选择题

A. The bottleneck is network I O.B. The bottleneck is l……

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.

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单项选择题WhichtoolisbasedontheAIXtracefacility？（）

A. no
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单项选择题Whichcommandseriesshouldbeusedtodeterminewhetherfilepagingorpagingspacepagingisaproblemwhenrunningaprogramfromanidlesystem？（）

A. foo ； lsps -s
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C. iostat ； foo ； iostat
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