单选题A system administrator ran the iostat command because of system performance problems. The following iostat output is provided: Based on the output, which of the following is insufficient?()A CPUB MemoryC Paging spaceD Disk capacityX

题目
单选题
A system administrator ran the iostat command because of system performance problems. The following iostat output is provided: Based on the output, which of the following is insufficient?()
A

CPU

B

Memory

C

Paging space

D

Disk capacityX

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相似问题和答案

第1题:

The Business Partner technical specialist is called to determine if the addition of host ports on an IBM System Storage DS8700 has improved users’ response times for an IBM System p server running SAP.  How can the improvement be verified()

  • A、check the output of the "vmstat" command on LINUX
  • B、check the performance reports via Tivoli Storage Productivity Center for Data
  • C、check the performance reports via Tivoli Storage Productivity Center for Disk
  • D、check the output of the "iostat" command on AIX

正确答案:C

第2题:

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

  • A、 tin
  • B、 tout
  • C、 % idle
  • D、 % tm_act

正确答案:D

第3题:

A system administrator has run topas on a server.  The output shows that the %iowait of the system is 60% and that most of the disk activity is on hdisk0.  Which of the following procedures should be performed to fix this problem?()

  • A、 Replace the hard disk with a faster disk drive. 
  • B、 Add another paging space on another hdisk. 
  • C、 Spread the data hdisk0 across several hdisks. 
  • D、 Nothing, since %iowait is a measurement of CPU time.

正确答案:C

第4题:

Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem?()

  • A、 filemon
  • B、 istat
  • C、 vmstat
  • D、 iostat

正确答案:D

第5题:

If a system administrator wants to show only a disk report for disk2, at two second intervals, what is the correct command to run?()

  • A、 iostat disk1 1 
  • B、 iostat -d disk1 2 
  • C、 iostat disk2 1 
  • D、 iostat -d disk2 2

正确答案:D

第6题:

Which of the following commands should be used to observe the number of system calls per second? ()

  • A、 sar 
  • B、 iostat 
  • C、 svmon 
  • D、 vmstat

正确答案:D

第7题:

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

  • A、 % idle
  • B、 % sys
  • C、 % user
  • D、 % iowait

正确答案:D

第8题:

A user is complaining that they ran out of paging space.  Which of the following will address this and  provide best performance()

  • A、Expand the default paging space to the largest possible size
  • B、Create a new larger paging space
  • C、Create additional paging spaces of equal size on different disks
  • D、Reboot system

正确答案:C

第9题:

Which of the following phrases is TRUE regarding monitoring disk I/O with iostat?()

  • 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

正确答案:B

第10题:

A system administrator is monitoring a system that has recently shown a decrease in performance.The administrator suspects that the system may be low on memory and may be paging excessively.Which of the following commands is best to identify a possible paging problem?()

  • A、iostat
  • B、netstat
  • C、ps
  • D、vmstat

正确答案:D

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