When does IIS recycle the worker process?

Question

When I setup an application pool for my web app in IIS 6 it defaults the worker process to recycle in 1740 minutes (29 hours).

Does this recycle happen even if there is activity on the web site or only if there is inactivity for 29 hours?

Answer 1

This depends on how your worker process recycling is configured. There are several ways to configure it and each one has different implications.

• Elapsed Time: In this mode the process will recycle after a period of time no matter how many requests come in
• After a request threshold is reached
• On Demand through the IIS Manager Tool

You can find detailed information on this topic at the following link

• http://technet.microsoft.com/en-us/library/cc778695(WS.10).aspx