|| VSImax shows the number of sessions that can be active on a system before the system is saturated. It is the point where the VSImax V4 average graph line meets the VSImax V4 threshold graph line. The intersection is indicated by a red X in the Login VSI graph. This number gives you an indication of the scalability of the environment (higher is better).
|| VSIbase is the best performance of the system during a test (the lowest response times). This number is used to determine what the performance threshold will be. VSIbase gives an indication of the base performance of the environment (lower is better).
| VSImax v4 average
|| VSImax v4 average is calculated on the number of active users that are logged into the system, but removes the two highest and two lowest samples to provide a more accurate measurement.
| VSImax v4 threshold
|| VSImax v4 threshold indicates at which point the environment's saturation point is reached (based on VSIbase).