|The svchost.exe process acts as a host for system services, some of which are essential while many others are very important for normal operation of the computer. It is normal to have quite a few of these processes running, the exact number depending on system configuration. Normally they require very little CPU time. If one is very high this is a good indicator of malware.|
Do not confuse svchost.exe with scvhost.exe. The latter is malware.