Whichiostat%iowaitminimumthresholdindicatesapossibleI／Obottleneck?()A.20%B.40%C.60%D.80%

题目
Whichiostat%iowaitminimumthresholdindicatesapossibleI／Obottleneck?()

A.20%

B.40%

C.60%

D.80%

相似考题

1.WhileauseriscompilingaCprogram,"vmstat12010"isruntodeterminethecauseofaperformanceproblem.Usingthevmstatoutputasshownintheexhibit,whichofthefollowingconclusionsismostappropriatetodraw?()A.ThereisafileI/Obottleneck.B.Therearetoomanyopenfiles.C.Thereappearstobeabuffershortage.D.ThereisapagingspaceI/Obottleneck.

2.ThesystemadministratorhasdeterminedthatanewJFSlogneedstobecreatedonadifferentdisk,inordertodecreaseanI／Obottleneck.Whichofthefollowingstepsarethemostcorrect?()A.mklv-tjfslog-yLVnameVGname1PVnamelogform/dev/LVname chfs-alog=/dev/LVname/filesystemnamem ountandunmountfilesystemB.mklv-tjfslog-yLVnameVGnamePVnameunmountfilesystemvi/etc/filesystems，changeentryforlvtopointfilesystemtonewJFSlogmountfilesystemC.mklvcopy-ajfslog-yLVnameVGname1PVname chfs-alog=/dev/LVname/filesystemname unmountandmountfilesystemD.mklvcopy-tjfslog-yLVnameVGname1PVname logform/dev/LVname vi/etc/filesystems，changeentryforlvtopointfilesystemtonewJFSlog unmountandmountfilesystem

3.ToexaminetheExhibit，presstheExhibitbutton.WhileadeveloperiscompilingaCprogram，"vmstat12010"isruntodeterminethecauseofaperformanceproblem.Usingthevmstatoutputasshownintheexhibit，whichofthefollowingconclusionsismostappropriatetodrawaboutthemachine？（）A.Themachinehastoomanyusers.B.ThemachinehasanI/Obottleneck.C.ThemachinehasaCPUbottleneck.D.Themachinehasamemorybottleneck.

4.ToexaminetheExhibit，presstheExhibitbutton.WhileauseriscompilingaCprogram，"vmstat12010"isruntodeterminethecauseofaperformanceproblem.Giventhevmstatoutputasshownintheexhibit，whichofthefollowingconclusionsismostappropriatetodrawaboutthemachine？（）A.Themachinehastoomanyusers.B.ThemachinehasanI/Obottleneck.C.ThemachinehasaCPUbottleneck.D.Themachinehasamemorybottleneck.

参考答案和解析
参考答案：A
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