We are using IIS 8 on Windows Server 2012.
The websites are using PHP in FastCGI mode and we use MaxInstances to control the number of php-cgi.exe instances that will be loaded at the same time to serve concurrent requests.
But is there a way to see what the current number of requests are in the request queue waiting for an instance to become available? We don't want to set MaxInstances to 0 since we have a DB backend which we don't want to overload. But we would like to know if our current MaxInstances value is OK or if there is a very long queue at any given moment.