Response Time and Availability

Use the Response Time and Availability pane to help you to visualize response time, availability trends, and alerts over time.

Response Time graph

Response time information is displayed on a line graph. To view it, click the Response time tab.

Graph of response times for a test for the previous 24 hours.

Important: Response times that are measured by Availability Monitoring are slightly greater than response times that are experienced by users. Availability Monitoring simulates real user behavior, which adds to the response time measurement. The greater response time is due to the following factors:

Availability Monitoring creates a new Firefox instance for each test to prevent previous test instances from influencing the current test. Real users might experience faster response times due to browser caching.
Availability Monitoring installs the Firefox web driver plug-in before each test.

Individual response times for tests are represented by a Response point icon on the line graph. Different colors denote different geographic locations where the app is running. The graph's y-axis uses alert icons to identify the warning and critical threshold ranges. The yellow warning icon represents the warning threshold range, and the red critical icon represents the critical threshold range. Click the yellow warning icon or the red critical icon to identify easily test instances that appear in the warning and critical threshold ranges. To view the details for a specific test instance, click the Response point icon on the graph.

Filters

Choose a test from the Test drop-down menu. You can filter data for 3 hours, 24 hours, 7 days, 30 days, and 12 months. When you filter for a time range greater than 24 hours, the values that are displayed in the graph are averaged. To view more specific information, click the graph to drill down to the individual alerts and warnings. You can also use the slider to narrow or expand the time range.

With the Response Time graph, you can highlight and hide the data from particular PoP locations. To highlight response time data for a particular location, hover over the PoP location name; then, click the Highlight location icon . To hide response time data for a location, hover over the PoP location name; then, click the Hide location icon . To restore PoP location data to the graph, click Add more locations Add more locations icon or the Metric Selection tab; then, click the PoP location that you previously removed.

Alerts

You can easily identify warning and critical alerts in the Alerts row. Hover over an alert icon Critical alert icon Warning alert icon to identify the severity and timestamp for that alert. Click an alert icon to display details for that alert in the Metric Feed.

If there is more than one icon close together on the Alerts row, a number icon displays the number of alerts at that time. Hover over a number icon to display the individual alerts, and click an alert to view information in the Metric Feed

Metric Selection and Metric Feed

To filter for metrics by geographic region, click Metric Selection. Click a location to add or remove metrics that are measured at that location from the graph. Click Add more locations to open the Test Edit Mode page and add a PoP location to your selected test.

Metric selection tab that displays PoP location filters.

To view a list of metric details, click Metric Feed. The Metric Feed displays a list of the instances where a metric is fulfilled.

Metric feed tab that displays details of a warning alert.

Click an alert icon or response point Response point icon on the graph to add the details of that metric to the Metric Feed.

Details of an available test instance in the Metric Feed.

If you filter the Response Time graph for a time range greater than 24 hours and click a response dot, you can see aggregated details for that day in the Metric Feed.

Metric Feed showing aggregated details of all instances of your test for one day.

Click Zoom to view all response times and alerts that were generated by test for that day in the Response Time graph.

To view detailed information about an alert or test response time, click Breakdown in the Metric Feed. Click Nearest Alert to view the nearest alert to that test instance in the Metric Feed, if an alert occurred.

Availability

To view the availability information for your apps, click Availability. The Availability graph shows the daily availability of each point of presence (PoP) for the selected test.

Availability graph that displays daily test availability by location for the previous 7 days.

With the Availability graph, you can highlight and hide the data from particular PoP locations. To highlight availability data for a particular location, hover over the PoP location name; then, click the Highlight location icon . To hide availability data for a location, hover over the PoP location name; then, click the Hide location icon . To restore PoP location data to the graph, click the Metric Selection tab; then, click the PoP location that you previously removed.

Hover over a graph point to display the failure rate and number of test instances for a particular day and location. Click a graph point to display this information in the Metric Feed.

Test availability at the Dallas PoP displayed in the Metric Feed.

Click Zoom to filter the Availability graph and the Response Time graph to display information for the selected day.