~Performance Queries: Chart Forms~

The Performance Navigator displays the following types of charts:

  • Line
  • STD Line
  • Simple Column
  • Grouped Column
  • Simple Pie
  • Bubble

Performance data for Application Performance inquiries can be displayed as line, column, or pie charts. The line chart is the default display.

Data for Quality of Service inquiries is displayed in bubble chart form only.

Line Chart

This chart plots each performance parameter along X and Y axes, and connects the measurements with a solid, continuous line. The X axis represents time. The Y axis represents a predefined parameter selected by the user.

Line charts automatically display two levels of information simultaneously: the selected attribute, and the attribute listed immediately beneath it in the Drill Down Stack. For example, the chart below shows Activity Response over time, filtered according to activity.

STD (Standard Deviation) Line Chart

This chart includes a representation of the amount of variability of the Y-axis measurements around the average value. The STD is depicted by a colored overlay on the solid line representing the mean.

Note:

An STD chart is not relevant when the Y-axis parameter is Count (total volume).

When measurements have a low standard deviation, most values are relatively close to the mean. The STD line therefore closely approximates the trend of the average line. When there is a high standard deviation, the measurements are spread over a larger range, and more measurements are far from the average.

STD line charts are helpful for identifying variability in measurements, isolating outliers, and identifying worst performing categories.

Simple Column Chart

This chart displays only one category of performance information at a time. (It therefore does not feature a legend.) Each component within the category is represented by a colored bar. The height of the bar (the Y axis value) represents the predefined parameter selected by the user. The actual Y axis value of each bar automatically appears in the center of the bar.

Column charts are helpful when comparing multiple attributes. The chart below compares Activity Response for five different activities.

Grouped Column Chart

This chart displays two levels of information simultaneously: the selected attribute, and the attribute listed immediately beneath it in the Drill Down Stack. Each component within the higher category is represented by a colored bar. The legend correlates each color with a specific component within the subcategory.

When a system attribute is composed of two or more subcategory components, each subcomponent is displayed as a separate bar. For example, the grouped column chart below shows Activity Response of several activities according to server. When an activity is associated with more than one server, performance information is displayed for each server.

Simple Pie Chart

A simple pie chart displays one category of performance information at a time. Each component within the category is represented by a colored chunk. The legend correlates each color with a specific component. The size of the chunks represents the predefined parameter selected by the user. The actual measured value for each component automatically appears in the center of the chunk.

Simple pie charts are helpful for viewing different components as percentages of a whole. The chart below shows Activity Response of a single activity (Initial Load), according to hostname.

Bubble Chart

This chart displays selected results of a Quality of Service or Influencing Performance Factors performance query. These types of queries provide overviews of the performance of a selected set of metrics relative to either average organizational performance, or all comparison categories. The bubble chart therefore does not record actual specific measurements, but shows the overall performance of selected categories relative to the average performance of a predefined group.

The X axis of a bubble chart represents the average quality of service for the selected comparison group. The 50% mark appears in the center of the X axis. Bubbles to the left of the 50% mark indicate below average quality of service, while bubbles to the right of the mark indicate that the quality of service is above average.

The Y axis of a bubble chart represents variability within quality of service measurements. The size of the bubble indicates the volume of measurements recorded.

The bubble chart below shows the quality of service of 10 different locations relative to the average quality of service of the entire organization. Washington (red bubble) has the best quality of service, and California (green bubble) has the worst quality of service. Las Vegas (black bubble) is the location with the greatest volume of measurements.