A. lsfs
B. iostat
C. lslv -p
D. lsvg -p
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A. nfso -d
B. nfso -c
C. startsrc -g nfs -d
D. startsrc -g nfs -r
To examine the Exhibit， press the Exhibit button. While a developer 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 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.
A. tprof
B. topas
C. filemon
D. vmstat
A. The sys is high when po is high.
B. The po represents the number of page steals.
C. The low values usually indicate insufficient paging space.
D. The low values usually indicate sufficient memory for the load.
A. r is greater than 40
B. id is greater than 50
C. sum of id and wa equals 50
D. sum of us and sy equals 100
最新試題
Which of the following RAID levels provide the best performance for a system where there are mostly writes occurring？（）
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？（）
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 TCP/IP application is transferring files from a personal machine to a remote machine. The application writes 32 kilobytes of data at a time to the socket， but has not issued a system call to set the window size. Which of the following procedures should be performed on the personal machine to increase the throughput of the application？（）
In an iostat report， which of the following options best describes the value of % tm_act？（）
Which of the following metrics provided by the iostat report is used to initially determine if a disk is I/O bound？（）
After issuing the nfsstat -rs command， the null received column starts to grow. This indicates which of the following conditions？（）
A system administrator increases the mbuf pool allocation， then runs vmstat. It is noticed that the paging rate has not decreased. What is the most effective option to maintain the mbuf pool and decrease paging？（）
Which tool is based on the AIX trace facility？（）
Which of the following logical volume placement policies is likely to give the best performance in most cases， all other factors being equal？（）