In Windows 7, is there a way to know how much memory a service is using?

In windows 7, is there a way (by using common interface or a custom utility) to know how much memory a specific windows service is using ?

It seems most services are hosted by svchost.exe processes ( some svchosts.exe processes seems to host tons of services). While it is possible to know which services are hosted by a specific process, I found no way to get information about how much memory a service take.

Take a look at Process Explorer from the SysInternals suite of tools. Sort the process column by name, and find svchost. Then, you can see in the description field (sometimes) the actual service that is running. The Private Bytes column will show you how much that particular service is using in memory.

By using task manager (Ctrl+Shift+Escape)you can right click the svchost process and select Go to service(s) and it will highlight the service(s) being hosted in that process.

Alternatively by selecting the PID column in the process tab you can then match the PID in services tab.