Generate Historical Graphs › Components of Graphs

Components of Graphs

Each graph has the same basic components, as shown in the following table:

The following list describes each component:

Title

For the predefined graphs, the title identifies the type of graph and is centered at the top of the graph. For custom graphs, the title is PSPA CUSTOM GRAPH unless you specify a title. Titles for ReGIS and PostScript graphs are in enlarged characters.

Subtitle

The graph and pie chart subtitle gives the node name (or the list of node names for composite graphs) and the date and time of the selected data. Also, the x-axis data points and the width, in time, of each point, is provided for graphs.

Axis Labels

All graphs have Time implied as the x-axis label. Labels for the y-axis specify the units of the plotted values, for example, Page Faults Per Second. If metrics of differing units coexist on the graph, the y-axis label is blank.

Y-Axis Markers

Axis markers indicate the magnitude and time of any point on the graph. The x-markers indicate the time and are displayed differently depending on the graphic format. The x-markers are displayed as HH:MM, HH, MM:SS, MM, DD, or MMM depending on the graph time range, and graphic format. When graphing historical data, month or even years may appear, depending on the time range selected.

The y-markers are based on the maximum value of all the data points. The increments are obtained from an internal table to make the graph easy to read. You may define the maximum value on the y-axis by using, the Y_AXIS_MAXIMUM keyword.

Legend

The legend appears at the bottom of the graph for all graphs other than ANSI graphs. The legend identifies the name of the metric, and the color, pattern, or graph character associated with it. For the predefined TOPxxx graphs, the items are always in the same format and order; for example, other (users, workloads, images, volumes, disks, and so forth), topmost, second top, third top, fourth, and fifth.