VMware VCM 5.3 User Manual download pdf (Page 19)

Windows 7 Operating System Optimization

Deploying Microsoft Windows 7 Virtual Desktops with VMware View Applied Best Practices

Disable unnecessary services [A]

Since services are not useful in a virtualized instance of the OS, disable unnecessary services

such as WWAN AutoConfig serve. Services can be disabled by launching the Services MMC

plug-in by running START\RUN\services.msc.

The following is a list of services that can be considered for disabling in a VDI environment.

♦ Telephony

♦ Shell Hardware detection

♦ Machine Debug Manager (MDM)

♦ Remote Registry

♦ Task Scheduler

♦ Network Location Awareness

♦ Windows Audio

♦ Themes

♦ WWAN AutoConfig

♦ WLAN AutoConfig

♦ Windows Update

♦ Windows Connect Now

For a comprehensive list of services and configuration options review

http://www.blackviper.com.

Disable SuperFetch [NP]

For non-persistent pools where the desktops are deleted after use disable the SuperFetch service.

SuperFetch analyzes usage patterns and based on repeated user action it and pre-populates RAM

with programs the user is likely to launch. This causes unnecessary I/O as any optimizations are

destroyed along with the desktop when a user disconnects. SuperFetch also allocates more of the

system RAM for its use which can increase the pressure on the host if RAM is heavily

overcommitted.

For persistent desktops with larger memory configurations it is recommended to leave

SuperFetch enabled so that Windows 7 can optimize the disk layout of the prefetch data and

proactively load user binaries into memory to make the desktop more responsive.

N ote: On systems w here the stor age i s able to achiev e more than 8 M B/ s random read

perf or mance duri ng the Window s System A ssessment Tool (Wi nSA T) tests the Super Fetch ser vi ce

may be proactively disabled. WinSAT is generally run during the out of box experience (OOBE)

system preparation stage after deployment. Windows 7 will do this under the assumption that

with very fast storage it is more efficient to pull data from disk than to pre-populate it into

memory.

To view the status of the last WinSAT test, an administrator should invoke the invoking winsat

query

from the command prompt in a Windows 7 command prompt window.

Managing Processes with Process Explorer [A]

Another useful tool for managing services and processes is Sysinternals Process Explorer which

provides an interface for viewing processes that are currently running on the desktop. Process

Explorer is also a powerful troubleshooting tool that can be used to investigate performance

issues, slow logon/logoff performance, and other related issues. An example of how Process

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