Monitoring and Tuning Your Server

A Thread-Related CGI Program Issue

If your server simultaneously executes a large number of long-running CGI programs, they tie up the entire IIS 5.0 pool of I/O threads and the server hangs until one of the CGI programs finishes running, or crashes. There is a workaround that makes IIS 5.0 use a separate dedicated thread for each CGI application. To enable this workaround, create a DWORD value called UsePoolThreadForCGI in the following location, and set it to zero:

HKEY_LOCAL_MACHINE
\System
\CurrentControlSet
\Services
\W3SVC
\Parameters

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