Home page chart

Data for the home page chart comes from the session table. The session table is used to store data about active desktop app sessions. The home page chart has a 30 minute granularity, which is due to the 30-minute interval between runs of the “Desktop Sessions Maintenance” system task that cleans up stale desktop sessions. See The client session and Stale sessions for an explanation of how the desktop session becomes stale.

When the AtHoc Desktop Integrated Pool is recycled, desktop apps are unable to perform a CU until the recycle completes. If a desktop app attempts a CU when the application pool is recycled and is unable to connect, and if the desktop session maintenance system task runs immediately after that, only one CU was missed. A session becomes stale when a CU has not occurred for 1.5 times the CU interval plus 30 seconds, so the desktop app may be able to do a CU before the session is deemed stale. You will not see that any of these events occurred by looking at the home page chart.

Desktop apps continue to try to connect when the application server is unable to process requests. For example, when IIS is stopped or when the server is swamped by too many requests. In this situation, stale sessions are cleaned up (that is, the records are deleted) when “Desktop Sessions Maintenance” runs.