How to find memory usage of individual Windows services?
Solution 1:
There is an easy way to get the information you are asking for (but it does require a slight change to your system):
Split each service to run in its own SVCHOST.EXE process and the service consuming the CPU cycles will be easily visible in Task Manager or Process Explorer (the space after "=" is required):
SC Config Servicename Type= own
Do this in a command line window or put it into a BAT script. Administrative privileges are required and a restart of the computer is required before it takes effect.
The original state can be restored by:
SC Config Servicename Type= share
Example: to make Windows Management Instrumentation run in a separate SVCHOST.EXE:
SC Config winmgmt Type= own
This technique has no ill effects, except perhaps increasing memory consumption slightly. And apart from observing CPU usage for each service it also makes it easy to observe page faults delta, disk I/O read rate and disk I/O write rate for each service. For Process Explorer, menu View/Select Columns: tab Process Memory/Page Fault Delta, tab Process Performance/IO Delta Write Bytes, tab Process Performance/IO Delta Read Bytes, respectively.
On most systems there is only one SVCHOST.EXE process that has a lot of services. I have used this sequence (it can be pasted directly into a command line window):
rem 1. "Automatic Updates"
SC Config wuauserv Type= own
rem 2. "COM+ Event System"
SC Config EventSystem Type= own
rem 3. "Computer Browser"
SC Config Browser Type= own
rem 4. "Cryptographic Services"
SC Config CryptSvc Type= own
rem 5. "Distributed Link Tracking"
SC Config TrkWks Type= own
rem 6. "Help and Support"
SC Config helpsvc Type= own
rem 7. "Logical Disk Manager"
SC Config dmserver Type= own
rem 8. "Network Connections"
SC Config Netman Type= own
rem 9. "Network Location Awareness"
SC Config NLA Type= own
rem 10. "Remote Access Connection Manager"
SC Config RasMan Type= own
rem 11. "Secondary Logon"
SC Config seclogon Type= own
rem 12. "Server"
SC Config lanmanserver Type= own
rem 13. "Shell Hardware Detection"
SC Config ShellHWDetection Type= own
rem 14. "System Event Notification"
SC Config SENS Type= own
rem 15. "System Restore Service"
SC Config srservice Type= own
rem 16. "Task Scheduler"
SC Config Schedule Type= own
rem 17. "Telephony"
SC Config TapiSrv Type= own
rem 18. "Terminal Services"
SC Config TermService Type= own
rem 19. "Themes"
SC Config Themes Type= own
rem 20. "Windows Audio"
SC Config AudioSrv Type= own
rem 21. "Windows Firewall/Internet Connection Sharing (ICS)"
SC Config SharedAccess Type= own
rem 22. "Windows Management Instrumentation"
SC Config winmgmt Type= own
rem 23. "Wireless Configuration"
SC Config WZCSVC Type= own
rem 24. "Workstation"
SC Config lanmanworkstation Type= own
rem End.
Solution 2:
You could use the built-in tasklist command and filter by service name (/fi switch), for example:
tasklist /fi "services eq TermService"
Output:
Image Name PID Session Name Session# Mem Usage ========================= ======== ================ =========== ============ svchost.exe 2940 Console 0 7.096 K
If you don't know a name, you can list them by running this statement:
tasklist /svc /fi "imagename eq svchost.exe"
It lists all services hosted by svchost.exe, for example:
Image Name PID Services
========================= ======== ============================================
svchost.exe 632 DcomLaunch
svchost.exe 684 RpcSs
svchost.exe 748 Dhcp, Dnscache
svchost.exe 788 LmHosts, W32Time
svchost.exe 804 AeLookupSvc, AudioSrv, Browser, CryptSvc,
dmserver, EventSystem, helpsvc,
lanmanserver, lanmanworkstation, Messenger,
Netman, Nla, RasMan, Schedule, seclogon,
SENS, ShellHWDetection, TrkWks, winmgmt,
wuauserv, WZCSVC
svchost.exe 1140 ERSvc
svchost.exe 1712 RemoteRegistry
svchost.exe 196 W3SVC
svchost.exe 2940 TermService
svchost.exe 2420 TapiSrv
Services aren't necessarily hosted by svchost.exe. So, if you can't find a service filtering by the executing file name, just run tasklist /svc. It will show all services.
Solution 3:
Process explorer will indeed show you individual memory usage within svchost Ensure you have the latest version from here https://docs.microsoft.com/sysinternals/downloads/process-explorer
Make sure to run the Process Explorer as administrator, click on the svchost you want to inspect, click the View DLLs button (or CTRL+D). Right click the headers in the DLLs window, Select Columns..., then check WS Total Bytes, and hit OK.
Now you can view and sort on the memory usage of individual services (implemented by dlls) within the svchost.
Solution 4:
While Process Monitor is a general purpose utility (that will do everything but wash dishes for you), for this particular question you want to use VMMap (another SysInternals utility)
https://docs.microsoft.com/sysinternals/downloads/vmmap
VMMap is a process virtual and physical memory analysis utility. It shows a breakdown of a process's committed virtual memory types as well as the amount of physical memory (working set) assigned by the operating system to those types. Besides graphical representations of memory usage, VMMap also shows summary information and a detailed process memory map. Powerful filtering and refresh capabilities allow you to identify the sources of process memory usage and the memory cost of application features.
Besides flexible views for analyzing live processes, VMMap supports the export of data in multiple forms, including a native format that preserves all the information so that you can load back in. It also includes command-line options that enable scripting scenarios.
Solution 5:
This is getting into stackoverflow territory, but if you can get hold of per-thread memory stats you may be able to roughly correlate that to the individual service dlls by matching them up to the dlls listed in the thread stack. Way too much for my tiny sysadmin brain, though.