Which iostat %iowait minimum threshold indicates a possible I/O bottleneck?（）A、20% B、40% C、60% D、80%
Which iostat %iowait minimum threshold indicates a possible I/O bottleneck?（）
- A、20%
- B、40%
- C、60%
- D、80%
相关考题：
Ifasystemadministratorwantstoshowonlyadiskreportfordisk2,attwosecondintervals,whatisthecorrectcommandtorun?() A.iostatdisk11B.iostat-ddisk12C.iostatdisk21D.iostat-ddisk22
WhichofthefollowingmetricsprovidedbytheiostatreportisusedtoinitiallydetermineifasystemisI／Obound?() A.%idleB.%sysC.%userD.%iowait
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.
In an iostat report， which of the following options best describes the value of % tm_act？（）A、 The total CPU usage for this driveB、 The bandwidth utilization of the indicated driveC、 It can best be represented by the equation （%iowait - %ioidle）D、 It can best be represented by the equation （kilobytes read/kilobytes written） *100
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
Which of the following metrics provided by the iostat report is used to initially determine if a disk is I/O bound？（）A、 tinB、 toutC、 % idleD、 % tm_act
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
Which of the following phrases is TRUE regarding monitoring disk I/O with iostat？（）A、 The iostat can only be run as the root userB、 There could be zero percent I/O wait and still be an I/O bottleneckC、 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
A disk contains several logical volumes. Which of the following commands indicates how much data is read from or written to a particular logical volume on the same disk?（）A、 sar B、 iostat C、 svmon D、 filemon
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
Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem？（）A、 filemonB、 istatC、 vmstatD、 iostat
Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system？（）A、 foo ； lsps -sB、 tprof -kx ； fooC、 iostat ； foo ； iostatD、 vmstat -s ； foo ； vmstat s
In an iostat report， which of the following options best describes the value of % iowait？（）A、 The amount of time taken to service an I/O interruptB、 The percentage of time CPU（s） are waiting for page insC、 The percentage of time the CPU9（s） are waiting on networkD、 The percentage of time the CPU（s） are waiting for outstanding disk I/O requests
单选题A disk contains several logical volumes. Which of the following commands indicates how much data is read from or written to a particular logical volume on the same disk?（）A sar B iostat C svmon D filemon
单选题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.
单选题In an iostat report， which of the following options best describes the value of % iowait？（）A The amount of time taken to service an I/O interruptB The percentage of time CPU（s） are waiting for page insC The percentage of time the CPU9（s） are waiting on networkD The percentage of time the CPU（s） are waiting for outstanding disk I/O requests
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
单选题Which of the following commands should be used to determine which disk of a system is experiencing a disk I/O performance problem？（）A filemonB istatC vmstatD iostat
单选题Which of the following phrases is TRUE regarding monitoring disk I/O with iostat？（）A The iostat can only be run as the root userB There could be zero percent I/O wait and still be an I/O bottleneckC 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
单选题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
单选题Which of the following metrics provided by the iostat report is used to initially determine if a disk is I/O bound？（）A tinB toutC % idleD % tm_act
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
单选题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
单选题Which iostat %iowait minimum threshold indicates a possible I/O bottleneck?（）A20% B40% C60% D80%
单选题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
单选题In an iostat report， which of the following options best describes the value of % tm_act？（）A The total CPU usage for this driveB The bandwidth utilization of the indicated driveC It can best be represented by the equation （%iowait - %ioidle）D It can best be represented by the equation （kilobytes read/kilobytes written） *100
单选题Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system？（）A foo ； lsps -sB tprof -kx ； fooC iostat ； foo ； iostatD vmstat -s ； foo ； vmstat s