單項選擇題Which fileset includes the commands vmstat and sar?()

A. bos.perf
B. bos.acct
C. bos.adt.samples
D. perfagent.tools


您可能感興趣的試卷

你可能感興趣的試題

1.單項選擇題How are hardware errors removed from an error report that are more than 30 days old?()

A. /usr/bin/errpt -d H 30
B. /usr/sbin/errclear - J H 30
C. /usr/bin/errclear -d H 30
D. /usr/sbin/errclear -j H 30

2.單項選擇題When a system has both online transaction processing as well as large batch processing, which of the following common procedures will best help to improve system performance?()

A. Boost the priority of batch jobs.
B. Schedule batch runs to reduce contention with OLTP.
C. Schedule OS maintenance such that it includes frequent application of PTFs.
D. Perform incremental backups of transaction processing and full backups of batch processing.

3.單項選擇題Data is transferred between two servers using NFS, where one server is configured with token ring, and the other system is configured with ethernet. It is discovered that the performance is greatly reduced during this transfer. Which of the following steps should be taken to improve performance?()

A. Reduce MTU on token ring system to match ethernet system using ifconfig command (i.e. ifconfig tr0 mtu 1500)
B. Reduce MTU on token ring system to match ethernet system using no command (i.e. no -o mtu=1500)
C. Increase MTU on ethernet system to match token ring system using ifconfig command (i.e. ifconfig en0 mtu 4096)
D. Increase MTU on ethernet system to match token ring system using no command (i.e. no -o mtu=4096)

4.單項選擇題The system administrator has determined that a new JFS log needs to be created on a different disk, in order to decrease an I/O bottleneck. Which of the following steps are the most correct?() 

A. mklv -t jfslog -y LVname VGname 1 PVname     logform /dev/LVname      chfs -a log=/dev/LVname /filesystemname m     ount and unmount filesystem
B. mklv -t jfslog -y LVname VGname PVname       unmount filesystem        vi /etc/filesystems, change entry for lv to point filesystem to new JFS log       mount filesystem
C. mklvcopy -a jfslog -y LVname VGname 1 PVname       chfs -a log=/dev/LVname /filesystemname       unmount and mount file system
D. mklvcopy  -t jfslog -y LVname VGname 1 PVname       logform /dev/LVname        vi /etc/filesystems, change entry for lv to point filesystem to new JFS log       unmount and mount filesystem

5.單項選擇題Which of the following statements are FALSE concerning the defragfs command?()

A. The defragfs command should not be run against file systems and logical volumes that contain mostly transitory information, such as /tmp.
B. The defragfs command should not be run on a large JFS2 file system when running on a 32-bit kernel.
C. The defragfs command can improve file system performance by increasing the file system’s contiguous free space.
D. The defragfs command can only be run against file systems that are mounted with read-write permissions.

最新試題

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?()

題型:單項選擇題

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?()

題型:單項選擇題

Which of the following commands should be used to identify packet sequence problems?()

題型:單項選擇題

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

題型:單項選擇題

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?()

題型:單項選擇題

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

題型:單項選擇題

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

題型:單項選擇題

An AIX system administrator needs to adjust the maximum amount of memory that can be pinned. Which of the following commands is used to make the change?()

題型:單項選擇題

Which of the following commands is run to adjust the number of free paging-space pages at which AIX begins killing processes?()

題型:單項選擇題

Which of the following commands should be used to monitor the number of threads on the scheduler’s run queue for any given interval?()

題型:單項選擇題