Graph

Graph view

The graphics view shows a 2 dimensional plot of selectable statistic data of currently filtered transaction instances and of all selected transaction definitions. More than one graphics view at a time can be opened. An example plot of four selected transaction definitions of the python CDDB database example is shown in "Graph plot of multiple selected transaction definitions" .

Figure: Graph plot of multiple selected transaction definitions

The graphics view shows the selected attributes of the transaction instances as a 2 dimensional plot, in our example the duration (in milliseconds) over consecutive number. The colour of each curve is preselected from the transaction definition selection on the left side and cannot be changed. Under the graph a legend is shown with the current name of each curve (built from the name of the application definition and the name of the transaction definition) and its colours. As an example the red curve showing the duration of the DB-Connect transactions. This curve is drawn as a line directly connecting each duration value. The blue curve above shows the duration of the CDDB-Query transactions which is the overall duration of the python CDDB database query.

Toolbar

The graphics view toolbar is equalent with the toolbar as described in histogram view section . Please read this section for details.

Configuration

In "The configuration dialog of the graphics view" the Configure graphics dialog is shown. This dialog lets the user change global parameters related to the whole graphics view (compared to parameters related to just one curve). Here the parameter of the X-Axis as well as of the Y-Axis can be selected.

Figure: The configuration dialog of the graphics view

X-Axis title

title of the X-Axis. Note if you change the parameter below the title will become the parameter name.

X-Axis parameter

possible parameters are:

• The item Number describes the number of each item
• The item StartDate is the start date of the transaction instance. The axis text is then formatted as day.month.year.
• The item StartTime is the start time of the transaction instance. The axis is then formatted as hour:minute:second.

Y-Axis title

title of the Y-Axis. Note if you change the parameter below the title will become the parameter name.

Y-Axis parameter

possible parameters are:

• The item Duration describes the duration time of the transaction instance (unit milliseconds)
• The item Arrival describes the arrival time of the transaction instance (unit milliseconds) as described by the ARM standard
• The item Blocked describes the blocked time of the transaction instance (unit milliseconds) as described by the ARM standard

Background colour

pushing the Change Color button opens a colour dialog where it is possible to define and choose a colour for the background of the graph. Default is white.

Grid enable

a checkbox which will enable a grid within the histogram if it is checked.

Grid colour

pushing the Change Color button opens a colour dialog where it is possible to define and choose a colour for the grid of the graph. Default is lightgrey.

Curve configuration

The dialog that configures each curve individually is shown in "The configuration dialog of each transaction curve" . Here the name of the curve can be changed to any name the user wants. The default name is "application definition name :transaction definition name". Under the name, the line type connecting the individual values and the symbols representing each value can be changed.

Figure: The configuration dialog of each transaction curve

Possible line types are:

• None: No line is drawn between the symbols
• Line: A line is drawn between the symbols
• Sticks: A line is drawn from the respective axis to the symbol
• Steps: An axis parallel line is drawn from the symbol to the next symbols axis value. Then another line connects the symbol with our line, leading to a step effect.
• Dots: A dotted line is drawn between the symbols

Possible symbols are:

• None
• Ellipse
• Rectangle
• Diamond
• Triangle
• Cross (+)
• XCross (X)

Example graph

"Graph view of a single transaction definitions" shows a graph of transaction measurements of Apache HTTPd HTTP requests over start date.

Figure: Graph view of a single transaction definitions