Application Pools setting
Enable pinging – Ping worker process every (frequency in seconds)
This setting specifies that each worker process will be pinged every n seconds, where n is the number specified in the selection box. This process is used to determine if a worker process is running correctly, or if it has been deadlocked.
What it mean ?
Central to Health monitoring is process pinging. With process pinging, IIS periodically checks to see if worker processes are responsive. This means that the WWW Service (svchost.exe) sends a ping request at a specified interval to each worker process (w3wp.exe). If a worker process fails to respond to the ping request, either because it doesn’t have additional threads available for processing incoming requests or because it’s hung up, the WWW Service flags the worker process as unhealthy. If the worker process is in an idle but unresponsive state, the WWW Service terminates it immediately and a replacement worker process is created. Otherwise, the worker process is marked for recycling.
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