ReadyBoost
General Information
ReadyBoost uses the Superfetch service and an USB flash drive or memory card as memory cache and performs boot optimization. If you do not use an USB flash drive in this manner, you can disable ReadyBoost, but a negitive impact on performance could result, depending upon the amount of memory installed. I recommend to leave the Superfetch service on Automatic.
Windows Vista
Default Description
Provides support for improving system performance using ReadyBoost.
Additional Information
None at this time.
Default Startup Type
| OS | SP0 | SP1 | SP2 |
|---|---|---|---|
| Vista Home Basic | Automatic (Started) | Automatic (Started) | Automatic (Started) |
| Vista Home Premium | Automatic (Started) | Automatic (Started) | Automatic (Started) |
| Vista Business | Automatic (Started) | Automatic (Started) | Automatic (Started) |
| Vista Ultimate | Automatic (Started) | Automatic (Started) | Automatic (Started) |
| Vista Enterprise | Automatic (Started) | Automatic (Started) | Automatic (Started) |
Service Names
Service Name (registry): EMDMgmt
Display Name: ReadyBoost
Default Path and Command Line Options
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted
Log On As
Account: Local System Account
Dependencies
What service ReadyBoost needs to function properly:
- File Information FS MiniFilter (HB, HP, B, U)
- FltMgr (HB, HP, B, U)
- ReadyBoost Caching Driver (HB, HP, B, U)
- Remote Procedure Call (RPC) (HB, HP, B, U)
- DCOM Server Process Launcher (HB, HP, B, U)
- Software Licensing (HB, HP, B, U)
- Remote Procedure Call (RPC) (HB, HP, B, U)
- DCOM Server Process Launcher (HB, HP, B, U)
- Remote Procedure Call (RPC) (HB, HP, B, U)
What other service require ReadyBoost to function properly:
- None (HB, HP, B, U)
Additional Reading
More information on these features is located here:
- ReadyBoost: http://www.microsoft.com/windows/products/windowsvista/features/details/readyboost.mspx
- Superfetch: http://www.microsoft.com/windows/products/windowsvista/features/details/superfetch.mspx
- Kernal Information: http://technet.microsoft.com/en-us/magazine/cc162480.aspx
Performance tests conducted with ReadyBoost and Superfetch are located here:
The recomended amount of ReadyBoost is between 1 and 3 times the physical RAM installed in the system. More information is here: