A. ping
B. trace
C. ifconfig
D. lsattr
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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.
A. % idle
B. % sys
C. % user
D. % iowait
A. defragfs
B. istat
C. filemon
D. fileplace
A. svmon and tprof
B. vmtune and schedtune
C. ps and schedtune
D. vmstat and topas
A. ifconfig ent0
B. entstat -d ent0
C. netstat -i
D. lscfg -vl ent0
最新試題
In AIX 5L and later， the operating system supports the /proc filesystem. What would be the best description of the /proc filesystem？（）
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？（）
If percentage of RAM occupied by file pages falls below minperm， page replacement algorithm steals pages from （）
Which of the following commands is run to adjust the number of free paging-space pages at which AIX begins killing processes？（）
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 performance tools will work with optimized code and also provides source statement profiling？（）
Which tool is based on the AIX trace facility？（）
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？（）
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 of the following metrics provided by the iostat report is used to initially determine if a disk is I/O bound？（）