Windows – Finding CPU usage of a service

cpu usageserviceswindowswindows 7

Because my laptop fan was spinning up for no reason, I had a look at the CPU usage and I see svchost with 12.5% CPU, which is basically a full core.

Now, I'm aware that svchost runs services and I know how to display the services it runs in Task Manager or Process Explorer (as described here).

Now I know which services are run, but I don't know which service eats the CPU time. I could disable one service after another, but I don't really like doing this (it could break things that are currently in use and I could forget turning the service back on later).

Therefore I'd like to know whether it's possible to instruct Windows to run only one service per svchost the next time I boot my PC. While I might have the slight disadvantage of several processes, I could immediately find out which one it is and it would be a much easier decision of whether or not to stop or restart the service.

Best Answer

Copied from http://windowsitpro.com/windows-server/configure-service-run-its-own-svchost-process

Run the following command in administrator Command prompt (command is written for windows update service)

sc config wuauserv type= own

to make windows update service run in a separate svchost process.

NOTE: а space is required between the equal sign and the value.

UPDATE : Running sc config wuauserv type= own on Windows 10 stops Windows Update from working properly.

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Windows – IPHLPSVC High CPU in Windows 8 x64

IPHLPSVC is responsible for IPv6 transition technologies. However, these do not work out of the box and require additional configuration (or just do not work at all in 2016).

Microsoft recommends against using ISATAP (in Understanding IPv6, Third Edition, p. 302) and says that native IPv6 should be used instead. Public 6to4 service is officially deprecated (RFC 7526; BCP 196). And Teredo has a long list of issues (only one IPv6 address which is guessable, limited NAT traversal support, various connectivity problems) which recommend against its use generally.

Unfortunately Windows had a bad habit of enabling all of these by default.

If you aren't knowingly using IPv6 transition technologies, you should explicitly disable them.

Right-click on Command Prompt and choose Run as Administrator. Then paste in the following commands:

netsh int ipv6 isatap set state disabled
netsh int ipv6 6to4 set state disabled
netsh int teredo set state disabled

You can also disable these with PowerShell (again, as Administrator):

Set-NetIsatapConfiguration -State Disabled
Set-Net6to4Configuration -State Disabled
Set-NetTeredoConfiguration -Type Disabled

Then restart your computer.

Windows – High CPU usage by dwm.exe when nothing is happening

I would check the amount of video ram VMWare is allocating the the Guest OS. I don't know where the exact configuration options would be inside of VMWare as I don't currently have access to an instance, but I would recommend running dxdiag.exe from within Win7 run prompt and looking to see how much memory the primary display adapter is registering. If this number is low (between 1-128MB), you probably need to allocate more video memory to the guest OS.

DWM is the desktop windows manager which will tend to use resources from the video card. Like an OS installed directly to hardware, if win7 finds that video resources are lacking, it will try to pick up the slack by using CPU resources to compensate.

It also couldn't hurt to either reinstall VMWare tools, or check if there is a newer version available. Since 'Tools probably has components that contribute to the virtualization of video resources, this may be similar to updating your video card driver.

Best Answer

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Windows – IPHLPSVC High CPU in Windows 8 x64

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