Specifying a global threshold

When defining a data view, you must specify a global threshold for all counters. This threshold enables you to see at which time a counter exceeds a certain value.

For example, when setting the threshold for the My Locking data view to 60 units per second, you want to see at a glance when a lock or an unlock request is performed, more than 60 times per second. The global threshold determines the scale of the chart and is represented as a red horizontal line. Step 5 shows you how to define or change this global threshold.

If you are not sure which unit and time interval to specify, you can try a couple of values for the units and time interval. Or, to get you started, you can define the scale to automatically adapt to the highest visible value of a counter.

To adapt the scale to the highest visible value:
  1. Display the Thresholds page of the Properties window.
  2. Click Dynamic scale and then click Finish.

You can use this kind of counter display to calculate the units and time interval for the scale. However, it is also useful if you want to compare the actual values of the counters with each other or get a better view of the relation between two counters.