A. The iostat can only be run as the root user
B. There could be zero percent I/O wait and still be an I/O bottleneck
C. Any I/O wait time displayed in output of "iostat" is an indication of severe I/O bottlenecks
D. Running "iostat" without any arguments/parameters is sufficient for resolving I/O bottlenecks
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A. df -k
B. lsps
C. lslv -p
D. fileplace
A. vmtune
B. ps au
C. iostat
D. rmss -m
A. sar
B. pstat
C. iostat
D. filemon
A. The values do not include working storage.
B. The values do not include persistent storage.
C. The values include both persistent and working storage.
D. The values are not working or persistent storage.
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. 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.
最新試題
The system administrator notices that there is an I/O bottleneck on one of three disks in datavg volume group. This problem disk contains the JFS log， loglv00 and one filesystem， /mydatabase. There are no other logical volumes on this disk. Which of the following options would be the best solution？（）
Which of the following performance tools will work with optimized code and also provides source statement profiling？（）
Which tool is based on the AIX trace facility？（）
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？（）
Which of the following commands should be used to monitor the number of threads on the scheduler’s run queue for any given interval？（）
In order to determine how efficiently an application is reading and writing data， which of the following utilities will report read and write sizes on disk I/O requests？（）
Which of the following commands is run to adjust the number of free paging-space pages at which AIX begins killing processes？（）
In an iostat report， which of the following options best describes the value of % tm_act？（）
Page replacements algorithm steals file pages only when percent of RAM occupied by filepages（）
After issuing the nfsstat -rs command， the null received column starts to grow. This indicates which of the following conditions？（）