System Thread 0 and IIS - Inetserver

With Task Manager (ctrl-alt-delete, select "Task Manager") should point you
to which process is taking up the most CPU.

With IIS, it's probably either inetinfo.exe or dllhost.exe. You will have
to determine which.

If it is inetinfo.exe, you know the CPU usage is coming from applications
that are configured to run "Low Isolation". If it is in dllhost.exe, you
know CPU usage is coming from application that are configure "Medium
Isolation" or "High Isolation".

Now, you want to chase down which possible application. Since there is
nothing in IIS that tells you "this application URL is running on this
thread in this process at this time" (which is what you're trying to figure
out to know what is using up CPU), this is pretty much
process-of-elimination -- search through applications configured in IIS.

--
//David
This posting is provided "AS IS" with no warranties, and confers no rights.
//
"Rob Thiebeau" <rob.thiebeau@interealty.com> wrote in message
news:0c5c01c34d34$303f2a70$a501280a@phx.gbl...
IIS is normally pretty high on these 2 servers out of 200
servers. Lately they have been spiking pretty high with
the system and slowing everyone down.

I've checked the event logs, and done the perfmon and
there are 20+ threads of the system and its instance 0
that is the only one going above 50% cpu...? Anyone have
an idea? I've stopped just about every service i could
think of and it doenst do anything.

thanks