Chart configuration options

These options are used when configuring graphs to specify the data that will be displayed.

Agent

Agent settings

Agent settings

Use the Agent list to select the agents from which you want to graph data about error codes and download times.

  • To view data from all agents, make sure the All Agents is checked. This is the default setting.
  • To view data from a specific agent, select that agent in the list. To select more than one agent, hold down the Shift key and select a range of agents listed next to each other, or hold down the Ctrl key and select multiple agents individually.

Carrier/backbone/ISP

Use the Carrier/Backbone/ISP menu to select the source from which you want to graph data.

  • To view data from all backbones, make sure that All selected is checked. This is the default setting.
  • To view data from a specific backbone, select that backbone in the list. To select more than one backbone, hold down the Shift key and select a range of backbones, or hold down the Ctrl key and select multiple backbones individually.

Distribution graph

These options control the appearance and content of the Distribution Graph:

  1. Select Network Component. This can be Total Time (overall performance time for all network components), or you may select a specific network component.
  2. Select the Distribution Graph Type. Four graph types are available: Histogram, Frequency Polygon, Ogive, and Box Plot. These graph types are described here.
  3. Select the Interval. Interval is the number of time segments that will be used.
  4. Choose whether to Add Study. When selected, this feature adds a legend with numerical detail to the Distribution graph to assist in analysis. 

Transaction error graphs

Use the Transaction Error Graphs options to set parameters specifically for transaction error graphs.

  • To categorize data according to a specific graph type, choose that graph type from the Categorize based on drop-down list.
  • To include all data, make sure the All Errors is checked.
  • To include data about a specific error, select that error in the list. To select more than one error, hold down the Shift key and select a range of errors listed next to each other, or hold down the Ctrl key and select multiple errors individually.

Geography

You need to select the geographic area that you want displayed in a graph. If you select All (the default option), MyKeynote graphs all data from all of the regions in your performance index. If you want to narrow the range of data graphed, you can make a selection from the drop-down list or from the scroll list.

To select a geographic area:

  • If you want to graph all regions in all of your performance indexes, make sure All is displayed in the drop-down list.
  • If you want to graph all regions using a specific performance index, select that index in the drop-down list.
  • If you want to graph a specific region, click Specify in the drop-down list, then select the desired region in the list. To select more than one region, hold down the Shift key and select a range of regions listed next to each other, or hold down the Ctrl key and select multiple regions individually.

Graphs categorized by time

This setting determines the bucket size that will be used for Time History graphs. Bucket size refers to the time lengths between data points displayed on your graphs. Bucket size, in combination with the Time Range and Time Pattern you have specified, determine the number of data points that will be displayed on Time History graphs.

  • When time interval size set is to Auto (the default setting), MyKeynote will select a bucket size that allows the graph for the selected time period to fit on the page, if possible.
  • Bucket sizes greater than the graph’s time range will be reduced to be equal to the time range of the graph (for example, if you have specified a time range of one hour, but your bucket size is two hours, the bucket size will be reduced to one hour).
  • Bucket sizes less than the URL’s measurement interval will be increased to be equal to the measurement interval of the URL.

Market/metro graphs

You can specify a Categorized by setting to be used for market graphs. The choices are City, Region, and Country. City is the default setting. If you select Region, the results for U.S. cities will be grouped into regional groups. Selecting Country causes the data to be grouped by nation.

Other options/additional options

Count content errors as page errors

When measuring the performance of a site or transaction, Keynote may report page errors, in which the entire page failed to download, and/or content errors, in which one or more specific content elements of the page failed to download.

When a content error occurs, the overall performance time registered for the page can be misleadingly high, as 95% of the page may have downloaded in an acceptable amount of time, while one content element may have taken several minutes to download (and hence timed out).

The Count Content Errors as Page Errors option lets you exclude from its performance graphs any data based on downloads with content errors. If you select this option, MyKeynote counts the content error as a page error and includes it in the error count, but does not average the page’s download time into the overall performance time. Keynote records a measurement time for a page even when an image or other page element does not download. If you do not select the option, MyKeynote includes this download time into the average performance time for the test.

Notes

  • When using this option for Transaction Perspective and Application Perspective measurements, note that the setting only affects summary transaction measurements (overall measurements for the entire transaction), not individual transaction pages.
  • Also, note that this setting only affects whether content errors will count as page errors in MyKeynote graphs; you can specify a different setting for your Service Level Reports and Alarms.

Combine historical changes into one data series

If you select Combine Historical Changes into one Data Series, it will only be relevant if you have made changes to the way that Keynote measures your URL. For example, if you changed from the U.S. 10 service to the U.S. 25 service Keynote graphs the data as two different data sets. Checking this box displays them as a single data set even though they were measured from different agent groups.

Y-axis scale

You can choose to have a linear or logarithmic scale used for the y-axis of graphs.

Examples (with same graph parameters except for scaling)

Log and linear scale graphs

Log and linear scale graphs

Show errors only

For Scatter Plot graphs, you can select this option if you want to include only measurements with errors in the graph.

Performance/availability options

For several graph types, you have the option of including an availability graph alongside a performance graph. Availability graphs show the percentage of successful page measurements. If you include both graph types, you can also specify whether you want the results sorted by Performance or Availability (except for Time History graphs). These options enable you to choose whether you want to include the Performance graph, the Availability graph, or both.

Time range

These settings specify whether you want to use a Relative or Absolute time range for your graph. The default time range setting is Relative.

For either option, you also need to specify the time range to be graphed. The larger amount of time you specify, the more data MyKeynote must download and, consequently, the longer MyKeynote requires to generate the graph.

To select a relative time range:

  1. Click the Relative button.
  2. From the Last drop-down list, choose the length of time for the period you want to graph.

The times in the list represent the amount of time passed up to the current time. For example, if you choose 1 Hour from the Last drop-down list, the graph will display data for the hour previous to the current time.

The relative time range changes from minute to minute. Each time you refresh a graph with a relative time range, the graph will change. Additionally, if you set a graph to display the most recent hour, then view the graph immediately, some of the data may not yet have been stored in the database; you can refresh the graph to see complete information.

To select an absolute time range:

  1. Click the Absolute button.
  2. From the Starting drop-down lists, choose a starting date and time for the period you want to graph.
  3. From the Ending drop-down lists, choose an ending date and time for the period you want to graph.

Time pattern

The Time Pattern options work in conjunction with the Time Range settings. These options let you choose a pattern of time within your selected time range for which you want to graph data.

For example, if on a Tuesday you choose an absolute time range to view the data for the previous Monday through Friday, you can use the time pattern options to graph a subset of the data by choosing specific days and hours. Normally this option is used to select time patterns representing typical work hours, such as Monday through Friday, 8 A.M. to 5 P.M.

To set a time pattern:

  • If you want to view data for all hours within your specified time range, click the All Hours option.
  • If you want to view a specific set of hours within your specified time range, click the option for the drop-down lists, and choose the hours you want from the lists.
  • If you want to view data for all days within your specified time range, click the All Days option.
  • If you want to view a specific set of days within your specified time range, click the option for the drop-down lists, and choose the days you want from the lists.

Transaction page selection

Several graph types that are available for Transaction Perspective and Application Perspective measurements can display data for individual pages of a transaction or for the aggregated transaction. You can choose All Pages if you want to include aggregated data, or the individual numbered pages of the transaction, if you want the graph to be based on selected pages only.

Transaction page graphs

Use this setting to select the Transaction components you want included in your Transaction Page graphs. You can also specify the default graph type you want used for the secondary graph displayed on the Transaction Page graph.

These options apply to Time History, Market, Agent, Carrier, and Scatter Plot graphs.

Network component

This option specifies whether trending will be based on total measurement time or on a specific measurement component.

Notes

  • If you want base trending on a specific component, you must also select a specific page of the transaction. Keynote components are described in this help page.
  • For scatter plot graphs, which consist of individual data points, this control determines which component will be represented by each data point in the graph.

Calculation method

You can select the method used for aggregation of measurement data in time-based graphs.

  • Arithmetic Mean—A simple, arithmetic mean is used. All values are added and divided by the number of data points.
  • Geometric Mean—A more complex aggregation method for aggregation, the geometric mean is defined as the nth root of the product of all the members of the set, where n is the number of members. The geometric mean may provide a more accurate representation of the data than the arithmetic mean, because the effect of outlier values is less. Note that when Geometric Mean is selected, any Trim Values settings are not applied.
  • Median—This is a value that separates the lower-value half of the sample and the highest-value half. Half the data points are below the median, and half above.
  • Standard Deviation—This is a measure of the spread of the data values. It is defined as the square root of the variance.

Trim values

In almost any set of Internet data, “extreme” values exist—download times that are exceptionally slow or exceptionally fast. These values can skew the average of the data, giving you a graph that is not truly representative of the performance test results. The Trim Values option lets you cut these values from the data set used to create a performance graph.

Typically, you’ll get the most useful results by trimming values that are in the highest 1 to 2 percent of those recorded. By default, the Auto setting ignores values that are higher than 60 seconds for non-dialup and non-transaction URLs, 70 seconds for dialup URLs, and 180 seconds for transaction URLs.

Although you will normally want to trim values that are above a certain value, there may be times when you want to trim values that are below some value. For example, you may want to look at the source of high values by looking at high values only, that is, trimming values that are below a certain value.

To set trim values:

  • If you want to turn off the Trim Values option, select Off.
  • To use the MyKeynote Auto setting, select Auto.
  • To set your own Trim Values, select either Above or Below, and specify the number of seconds you want to use as a threshold.

Note

Trim Value settings do not apply if the calculation method used is Geometric Mean.