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？（）

Which of the following procedures WILL NOT increase contiguous free space on a the filesystem /data1， located on /dev/lv01， that is heavily fragmented？（）

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

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？（）

Which of the following RAID levels provide the best performance for a system where there are mostly writes occurring？（）

When monitoring a system using vmstat with an interval， which of the following conclusions should be drawn about the metrics under page pi and page po？（）

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

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

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

Which of the following logical volume placement policies is likely to give the best performance in most cases， all other factors being equal？（）