Which event log files does the IIS 7.0 Application Pool Recycling log to?
I want to check out at what time the default app pool automatically recylces.
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They are logged in the Windows Event Viewer. On Win7 they are in Windows Logs > System - filter for Source = WAS
A typical message may read:
A worker process with process id of '5916' serving application pool 'DefaultAppPool' was shutdown due to inactivity. Application Pool timeout configuration was set to 20 minutes. A new worker process will be started when needed.

Barry Kaye
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The message above do not refer to recycle. Typical message is "A worker process with process id of 'xxxx' serving application pool 'xxxxx' has requested a recycle because the worker process reached its allowed processing time limit." – aKiRa May 30 '20 at 10:28