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Table Of Contents
VMware, Inc. 283
Chapter 12 Performance Tuning for VMware Server
To enable hardware acceleration after installing VMware Tools
1FromtheWindowscontrolpanel,selectDisplay.
2ClicktheSettingstab,andclickAdvanced.
3ClicktheTroubleshoottab,anddragtheHardwareaccelerationslideralltheway
toFull.
Configuring Direct Memory Access (DMA) Disk Settings
SCSCIphysicaldisksareusuallyfasterthanIDEdisksthatuseDMA.However,in
certainsituations,suchassinglethreadeddiskaccess,anIDEdiskthatusesDMAisas
fastasaSCSIdisk.
Inavirtualmachine,SCSIdisksandIDEdisksthatuseDMAhavesimilarperformance.
IDE
disksmightbeveryslowinaguestoperatingsystemthatisnotconfiguredtouse
DMA.Ifsupported,alsoenableDMAinSCSIdisks.
TheeasiestwaytoconfigureaLinuxguesttouseDMAforvirtualIDEdrivesisto
installVMwareTools.DuringVMwareToolsinstallation,IDE
virtualdrivesare
automaticallyconfiguredtouseDMA.
InWindowsServer2003,WindowsXP,andWindows2000,DMAisenabledbydefault.
Windows95OSR2andWindows98canuseDMAforfasterIDEharddiskaccess,but
DMAmightnotbeenabledbydefault.
To enable DMA access using the Device Manager in Windows 95 and Windows 98
1RightclickMyComputerandselect
Properties.
2Clicktheplus(+)signnexttoDiskDrivestodisplaythevirtualmachine’s
individualdrives.
3RightclicktheentryforeachIDEdrivetoopenitsPropertiesdialogbox.
4UnderSettings,selectDMAandacceptanywarningsthatWindowsdisplays.
5RestarttheWindowsguestsystem.
The
methodforchangingthesettingvariesforotherWindowsoperatingsystems.