I have an ASP.Net 3.5 website running in IIS 6 on Windows Server 2003 R2. It is a relatively small internal application that probably serves less than ten users at any given time. The server has 4 Gig of memory and shows that 3+ Gig is available while the site is active.
Just minutes after restarting the web application Performance monitor shows that there is a whopping 4,294,967,293 sessions active! I am fairly certain that this number is incorrect; at the time this reading there were only 100 requests to the website.
Has anyone else experienced this kind odd behavior from perf mon? Any ideas on how to get an accurate reading?
UPDATE: After running for about an hour the number of active sessions has dropped by 4. So it does seem to be responding to sessions timing out.
Could be an overflow, but my money’s on an underflow. I think that the program started with 0 people, someone logged off, and then the number of sessions went negative.