Task Manager shows the overall memory usage of svchost.exe. Is there a way to view the memory usage of individual services?
Note this is similar to Finegrained performance reporting on svchost.exe
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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.
You could use the built-in
tasklist command and filter by service name (
/fi switch), for example:
tasklist /fi "services eq TermService"
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.
Process explorer will indeed show you individual memory usage within svchost Ensure you have the latest version from here http://technet.microsoft.com/en-us/sysinternals/bb896653
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
Now you can view and sort on the memory usage of individual services (implemented by dlls) within the svchost.
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)
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.
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.
I extend Peter Mortensen's answer here. Before modifying the type of services, please check the existing type by command like:
sc query wuauserv
Which will output the followings:
TYPE : 20 WIN32_SHARE_PROCESS STATE : 1 STOPPED WIN32_EXIT_CODE : 0 (0x0) SERVICE_EXIT_CODE : 0 (0x0) CHECKPOINT : 0x0 WAIT_HINT : 0x0
Any type other than "10 WIN32_OWN_PROCESS", "20 WIN32_SHARE_PROCESS" should not be modified.
Separating the services is the correct answer, but the sc config command didn't work for me (2008 R2).
You can do it via the registry though, which means setting the "Type" parameter to 0x00000010 (dec. 16):
Be careful though which service you choose to modify, there are special types besides "own" and "share" that shouldn't be changed, like:
After that, just restart the service and you should see in ProcessExplorer that it now has its own svchost.exe process.
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