What Is dwm.exe In Task Manager And Why It uses So Much Memory?
What is dwm.exe In Task Manager And Why It uses So Much Memory?
Dwm.exe (Previously known as Desktop Composting engine Or DCE) desktop windows manager is a windows system file and mainly to enhances the use of hardware acceleration to perform graphical user interface of windows operating system such as 3D elements, aero glass preview, control themes, live window thumbnail preview and icons.
How it works? Dwm is composting windows manager and each program has its window image. The data of this image is stored in memory and then composits final image of all the windows on the screen before sending it to monitor.The prominent advantage of this approach in windows Vista is to use hardware acceleration feature in video card for visual effects like minimizing and restoring. To add video card with your windows Dwm. Video card should have the following features:
- 32 bit per pixel support
- Direct x 9 support
- Pixel shader 2.0 support
- A video card GPU that support WDDM
What about memory utilization?
To see the dwm.exe process, open up task manager and will show how much memory is eaten by dwm.exe process. It should be around 30 to 50 MB.
Memory Size usage vary, Dwm process uses more memory depends upon how many program windows are opened. It is because each window need some memory for content storage.The major benefit of windows manager is to use very small amount of memory in most of the cases.
Does Dwm turn off by switching to vista basic theme ?
Switching to vista basic theme does not switch Dwm process off but helps to reduce memory usage to greater extend.
To switch vista. Right click on the desktop a dialogue box open choose personalize and then windows color and Appearance.
Click on the classic appearance properties.
Choose Windows Vista Basic and then click on Apply
Caution: Only Shown how to select Basic Theme.
How To Turn dwm.exe off ?
It is not recommended to turn off the Dwm process unless you play games in full screen mode. It does not increase speed by just turning it off .To quit the Dwm process. Go to control panel or Start Menu and find “Desktop Window Manager Session Manager” then click on the stop button. By stopping Dwm process you will be directly taken to Vista Basic theme.
To disable permanently double click on on the item and opt Disabled from the “Startup type” drop-down:
Dwm process can be stopped through command prompt service by using the below mentioned commands
Stop Service net stop uxsms
Start Service net start uxsms
Disable Service sc config uxsms start= disabled
Enable Service sc config uxsms start= auto
Conclusion: You got what the process is, do you still want to stop it.