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The Online Data Graph displays the current value of the metrics that make up the indication on a given instance of a resource; for example, Processor 0 on a single processor system. One data point is shown for each metric when the graph is launched. Use the Table format to display non-numeric metrics.
The Online Data Graph refresh rate and the format in which it is launched are specified on the Graph View tab of the Preferences view. You can change the style of graph displayed from the Select a Graph Format drop-down list.
Data is added to the graph at each refresh interval until the rollover interval for the graph is reached or the health of the instance returns to 100. The default rollover interval is 24 hours. When the health of the instance returns to 100, the graph displays a message. New data points are added if the health drops below 100 at a later time.
New data points are added to the right side of the graphs and the bottom of the table. When the rollover interval is reached, data points fall off the left side of the graphs and top of the table.
For non-table formats, the graph is divided into 10 zoom regions of equal size. To zoom in on a specific region of the graph, position the cursor on the desired area and click. The graph is refreshed and displays only the selected region. Click Zoom Out to return to the previous zoom level. For example, if you zoomed in three times you would have to click Zoom Out three times to return to the original graph view.