单项选择题

In an iostat report， which of the following options best describes the value of % 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

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热门试题

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

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.

单项选择题WhichtoolisbasedontheAIXtracefacility？（）

A. no
B. netpmon
C. entstat
D. nfso

单项选择题Whichofthefollowingcommandsshouldbeusedtotuneparametersofdevicesthataredisplayedwithlsattr？（）

A. chdev
B. cfgmgr
C. vmtune
D. schedtune