IBM(000-234)

单选题Which of the following metrics provided by the iostat report is used to initially determine if a system is I/O bound?()A% idleB% sysC% userD% iowait

题目
单选题
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

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相似问题和答案

第1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2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3题:

WhichofthefollowingmetricsprovidedbytheiostatreportisusedtoinitiallydetermineifasystemisI/Obound?()

A.%idle

B.%sys

C.%user

D.%iowait


参考答案:D

第4题:

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?()

  • A、 tprof
  • B、 iostat
  • C、 svmon
  • D、 filemon

正确答案:D

第5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6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7题:

Which iostat %iowait minimum threshold indicates a possible I/O bottleneck?()

  • A、20% 
  • B、40% 
  • C、60% 
  • D、80%

正确答案:A

第8题:

In an iostat report, which of the following options best describes the value of % tm_act?()

  • A、 The total CPU usage for this drive
  • B、 The bandwidth utilization of the indicated drive
  • C、 It can best be represented by the equation (%iowait - %ioidle)
  • D、 It can best be represented by the equation (kilobytes read/kilobytes written) *100

正确答案:B

第9题:

Which of the following commands can be used to determine if a disk drive is causing a bottleneck?()

  • A、 vmstat 
  • B、 fileplace 
  • C、 iostat 
  • D、 lvmstat

正确答案:C

第10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

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