We recently dealt with an interesting issue that I would like to share, hope you enjoy. - Jason
Issue Summary
Customer reports that within their Citrix server farm (running on Windows Server 2003), when a user logs into or out of a session (seems more pronounced on logoff), ALL users connected to the server experience a ~5-20 second hang. The hang is described as follows:
- Application in the session (i.e. Outlook and Word) stop accepting keyboard input. When the hang subsides, the typed characters show up all at once.
- If applications are moved, they do not redraw
- Cannot click the start menu
- If the user was running performance monitor (in an attempt to diagnose), there would be a gap in the perfmon data that directly correlated to the hang duration
Customer has found that during the timeframe of the hang, Winlogon.exe (in session 0) is showing 25% CPU usage.
|