Which tool is based on the AIX trace facility？（）

Which of the following commands will only provide a snapshot of average memory usage for a process？（）

Which of the following performance tools will work with optimized code and also provides source statement profiling？（）

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？（）

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？（）

To examine the Exhibit， press the Exhibit button. Using the "ps -mo THREAD" output as shown in the exhibit， which of the following conclusions is most appropriate to draw？（）

When setting up schedules and enforcing scheduling of different types of workloads， which of the following are critical performance issues？（）

Which of the following metrics provided by the iostat report is used to initially determine if a disk is I/O bound？（）

Which of the following tools should be used to display the location of unused physical partitions on a disk drive？（）

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？（）