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Foglight Experience Monitor 5.8.1 - User Guide

Installing and configuring Multi-appliance clusters Configuring the appliance Specifying monitored web traffic Transforming monitored URLs Managing applications Foglight components and the appliance Using the console program Troubleshooting the appliance Appendix: Third party software Monitoring the user experience Customizing reports The alarm system Integrating the appliance SOAP-based web services

Report options

You can configure baseline settings, display options, enterprise service levels and percentile settings.

Baseline calculations can be based on:

To change a baseline calculation, enter an amount of time in the appropriate box, indicating the number of preceding units of time the baseline calculation includes.

For weekly and monthly baselines, the calculation uses all of the preceding time periods. For example, if you have configured four months in the Monthly baseline calculation text box, a monthly baseline displayed in May would include the aggregation of data from January, February, March and April. Similarly, for weekly baselines the baseline calculation includes the preceding number of weeks specified in the Weekly baseline calculation text box on this page.

Hourly and daily baselines work differently in that the time period is considered significant. For example, an hourly baseline calculation for 10:00 utilizes only the metrics for the 10:00 hours found in the preceding 168 hours, assuming you have retained the default setting of 168 hours.

Similarly, daily baselines calculations includes metrics only from the same day. For example, the calculation for a Friday baseline includes only the metrics for each Friday found in the preceding 32 days, again, assuming you have retained the default setting of 32 days.

After modifying baseline calculation values, click Apply to retain the changes. The next time a report set is viewed, the new baseline calculation appears.

The Percentile Metrics configuration page, accessed by clicking Configure > Reporting > Options allows you to change the percentage of events that are included in percentile metric calculations.

Percentile metrics are used to verify the quality of service for a specific event that is related to the end-user experience. Some examples of percentile metrics are Page End-to-End Time Percentile and Page Processing Time Percentile.

Percentile metrics indicate the quality of service by reporting the maximum time required for an event type to occur, where the time reported represents the upper threshold for n% of all occurrences of the event over a given time frame.

For example, if the Page End-to-End Time Percentile metric has a value of four seconds, this means n% of the pages downloaded for the monitored site were received by end users in less than four seconds.

By default, the percentile level is set to 95%. This means the metrics for the aforementioned events report the time required for an event to complete for the 95th percentile.

The system approximates the time required for n% of all events to occur by using the mean, standard deviation, and the standard normal variable. See Metric Definitions in the Foglight Experience Monitor Metric Reference Guide for information about how these metrics are calculated.

To change the percentile level, enter a value in the box on the Percentile Metrics configuration page, then click Apply. All percentile metrics are calculated using the new percentile level.

The Enterprise Service Levels settings allows you to define service level policies across the entire enterprise, through the metrics available in the Enterprise category.

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Click Apply to save your changes.

Select the Use display preferences for Intranet environments check box to define how you will view information on the User Sessions Log. Click the option to show the user’s subnet, or clear the check box to display the user’s city.

 

Database configuration

The Database page, accessed by clicking Configure > Appliance > Database, provides you with a number of administrative tasks for managing the appliance’s database.

Figure 143. Database page

Viewing the database page

The database page contains a list of databases, and for each database, details about metrics, storage and its data retention periods. For each database you can view information about its size and usage. The Size value for each database refers to the hard disk space used by the database. The Usage (%) value refers to the percentage of space on the database partition that the database is occupying.

The Size and the Usage columns display a total value for all of the databases included on the Database page. These values display the overall space that the databases are using and do not include values for any configuration databases.

The Database Partition Usage metric, viewed on the Metric Analysis > System Health > Database Partition Usage page displays a total value for the database partition that includes configuration database values. If you compare the total percentage on the Database page with the metric value on the Database Partition Usage page the totals will not match. For information about database totals that include configuration databases, see the Database Partition Usage metric in the Foglight Experience Monitor Metric Reference Guide.

In addition you can click the Details link which allows you to drill down to detailed information for a specific database. For information about viewing database details see, Viewing the database details page.

 

Monitoring the user experience

Foglight® Experience Monitor is a comprehensive appliance-based solution that empowers organizations to effectively manage, troubleshoot, and optimize all components of the service delivery chain under their control. With our turn-key, self-contained computer system, customers gain unprecedented visibility into the inner workings of their network infrastructure and the quality of the end user’s experience. The appliance provides concise, accurate information in real-time about component performance, systematic failures, and a wealth of other information.

This User Guide provides information about different aspects of monitoring web traffic using the Foglight Experience Monitor appliance. It also presents information about managing report sets, managing the alarm system, and integration with other Foglight systems. This guide is intended for all users who need a deeper understanding of the Foglight Experience Monitor appliance.

This section provides information about different aspects of monitoring web traffic using the appliance.

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