November 11th, 2010, 04:37 AM
W3wp-processes is consuming an extreme amount of memory
Hello IIS experts,
I have a Windows Server 2003 Web Edition with SP2 running mutiple sites (shared hosting). The memory usage for all the w3wp.exe processes is overloading the server and the pagefile indeed. I have configured automatic recycling ("Recycle worker processes (in minutes)" is set to 3600), but it does not seem to work.
As new members cant post links/URLS in new posts, please insert a . instead of DOT in all my screenshot-links.
This is a screenshot of the current processes sorted by memory usage:
Screenshot of the performance tab:
So i need to match PID with the corresponding Application Pool to monitor which AppPools that are killing my server.
I've tried the following:
1) Use cscript iisapp.vbs to get a list of all the Worker processes.
Result: "Could not create an instance of the CmdLib object.
Please register the Microsoft.CmdLib component."
So the CmdLib needs to be registered:
2) I ran the "C:\WINDOWS\system32>regsvr32 cmdlib.wsc" command.
Result: Succeeded! (yeah right..)
3) Ran the cscript iisapp.vbs again, but i get the same CmdLib error again.
Now i'm stuck! Is there any other way to register the cmdlib? Or maybe use a third party program to match PID with Application Pool?
I have even tried to use procmon.exe and excluded all other processes than w3wp.exe, but with no usable result.
Any ideas, guys? Of course the iisreset-command will kill all the w3wp-processes but that is not supposed to be the final solution. Most of all, because the w3wp-processes is consuming a lot of memory very quickly again.
Thank you very much in advance.
Best regards and thanks on advance,
November 16th, 2010, 11:23 AM
It sounds like you have a memory leak - or atleast i think thats what I have too as the symptoms are v similar. Instead of using cscript, if you can, stop all the app pools apart from the one running the problematic code, then there will be only 1 w3wp.exe running, so no need to ID which one by the Task Manager PID! I know its not really a solution, but i couldnt get cscript to run locally (but it would on the win 2k3 server w/ IIS 5 and I have Vista and IIS 6) but it did work...