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Web server slow, inetinfo.exe near 100%

By harry ·
I have a win server 2003 running as a web server. The applications on it are ColdFusion and MS SQL Server.

Often the server becomes very slow or unusable, even with fewer than 10 users. Reboot fixes the problem but only temporarily.

The only strange parameter I see is that the inetinfo.exe (IIS) process runs at about 100%, regardless of the number of users on the system. It has about 35 threads, 870 handles and uses 16MB of memory. These numbers are approximately the same after reboot. System totals: 14,000 handles, 650 threads, 49 processes.

It seems to have plenty of RAM (1GB), doesn't page too much.

I do not have Exchange on this server (which I've seen as a cause of inetinfo.exe problems).

Any ideas of what the problem is or where I should look?

Is there any way to find out what the threads are in inetinfo.exe to possibly find one causing problems?


Harry Tennant

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by Toivo Talikka In reply to Web server slow, inetinfo ...

You can install the Windows NT Server Resource Kit and use pmon and pstat.

Alternatively, you can install freeware from, for example PsList from

Sysinternals has a whole page of utilities regarding processes and threads at

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by harry In reply to

Thanks. PsList didn't reveal anything about threads but their Process Explorer has lots of info. So, now I know that all the time is going to system calls to CreateUserThread and UpdateTimer, but can't imagine that taking all available CPU time. And I'm not sure where it's coming from.

But anyhow, thanks for the pointer to the tools.


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by harry In reply to Web server slow, inetinfo ...

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