IIS 5 & IIS 6
IIS memory consumption
Re: IIS memory consumption
Jul 17, 2019 02:07 AM|Able|LINK
According to your description, I suggest that you could use tool like Debug Dialog to track the iis process. You could track iis process and log the details when it increases memory usage.It will help you find the reason for memory problem
Here is the link I hope it could help you.