In the worst circumstances, an instance could be unresponsive and it isn't possible to view the system log, performance graphs, or even any standard page in the interface. This may occur when the database is totally overwhelmed. Since every standard page requires records from a database, severe contention may mean you can't see or do anything.
To enable you to see what is happening to the instance at a glance, even in times of stress, a page is available at <instance>.service-now.com/stats.do. You will always see the information of the node that you are currently allocated to. Therefore, this may not reflect everyone's experience.
There is no deterministic way to choose which node you are on. The ServiceNow load ...
