The page below is from the manual of PRTG, our quick-to-install and easy-to-use network monitoring software

Try PRTG now and see how it can make your job easier.
 

Free Trial Download
You will be up and running in 2 minutes
Learn More
Screenshots, Features, Videos


Aurelio, System Admin at Paessler AG

For quick reviews of a sensor's monitoring data, use the historic data reports as an alternative to the comprehensive Reports function. You can run and view a report of the historic data for each single sensor, on demand. Additionally, you can export this sensor data as XML or CSV files to your computer for further processing with third party applications.

There are two ways to open PRTG's historic data reports: either you click the Historic Data tab on a sensor's detail page, or you choose Sensors | View Historic Data from the main menu.

Historic Data (Sensor Tab)

Probe, group, device, and sensor pages have tabs that you can use to navigate between the different options. For example, you can view your network's status, view monitoring results, or change settings.

Tabs Bar on Sensor PagesTabs Bar on Sensor Pages

The Historic Data tab is available for sensors only (not for probes, groups, or devices). When you open the historic data tab of a sensor, there is no sensor selection available. If you want to select a different sensor for the report, select Sensors | View Historic Data from the main menu in the PRTG web interface.

Historic Data Tab of Ping SensorHistoric Data Tab of Ping Sensor

Click here to enlarge: http://media.paessler.com/prtg-screenshots/historic_data_tab_ping_sensor.png

Historic Monitoring Data (Sensors Main Menu)

When you open historic data reports via Sensors | View Historic Data in the main menu, PRTG will ask you to choose the sensor you want to create a report for with the Object Selector.

Historic Monitoring Data Settings

Settings

Sensor

This field is only visible if you open the historic data function via the main menu. Select the sensor you want to create the report for: click the reading-glass symbol to open the object selector. For more information, see section Object Selector .

Start

Specify the start date and time of the data you want to review. Use the date time picker to enter the date and time.

icon-i-round-redYou cannot start the report generation if monitoring data has been purged after the defined start date. Please set the start for the report to a date where data is available.

End

Specify the end date and time of the data you want to review. Use the date time picker to enter the date and time.

Quick Range

In this section you can use several buttons for a faster selection of start and end dates. Click any of these links to change the Start and End values above. Choose between:

  • 1 Day , 2 Days , 7 Days , or 14 Days : Set the date range to the respective day(s). The current time of the current day is the end date.
  • Today , Yesterday , Last Week (Mo-Su) , Last Week (Su-Sa) , Last Month , 2 Months , 6 Months , 12 Months : Set the date range to the last matching period. It starts at 00:00 and ends at 00:00 of the particularly following day.

Average Interval

With this option, you can activate and configure averaging. Select an interval for which PRTG will calculate the average value. You can choose between No Interval (no averaging is performed and only raw data displayed), a few seconds, minutes, hours, or a whole day (24 Hours ). A shorter interval results in a more detailed report for this sensor.

The best settings for you may vary, depending on the scanning interval of the sensor, the selected date period, and the intended use for the report. It might be useful to try different settings and compare what the results look like. Please also see the section Automatic Averaging below.

Channels in Graph

Select the channels that you want to include in the graph of the report. You can select or deselect individual channels with the respective check boxes, and select or deselect all channels with the buttons Show all or Hide all. PRTG will only show the data of selected channels in the graph of the report.

icon-i-roundThe report table will always show the data of all channels.

Cluster Node

This field is only visible if the sensor is running on a cluster probe. Select the cluster node's data that PRTG will include in the report. Choose between:

  • All nodes : Include the data of all cluster nodes in the report.
  • [Several specific nodes] : Use a specific node's data for the report. The nodes you see are specific to your setup.

File Format

Select the output format for the report. Choose between:

  • HTML web page : Display the result directly as HTML web page. This is also a good option to check results before exporting to another file format.
  • XML file : Export the data as Extensible Markup Language (XML) file. Usually, your browser shows a download dialog when you use this option.
  • CSV file : Export the data as Comma Seperated Values (CSV) file, for example, for import into Microsoft Excel . Usually, your browser shows a download dialog when you use this option.

Include Percentiles

Percentile Results

Define if you want to include an additional percentile calculation of your data in the report. Choose between:

  • Do not show percentiles : PRTG does not use a percentile formula to calculate your monitoring results. It will show only the standard values.
  • Show percentiles : PRTG adds a column to the result data tables, which shows percentiles for every sensor channel.

icon-i-roundPercentiles are not available for all report templates. If a template does not support percentiles, they will simply not show up in the report, even when you enable this setting.

Likewise, percentiles are not available in a cluster setup if you choose the option All Nodes in the Cluster Node setting in the sensor section above.

Percentile Type

This setting is only visible if you select Show percentiles above. Enter the percentile type you want PRTG to use for the calculation. If you choose, for example, to calculate the 95th percentile, enter "95" here and 5 % of peak values will be discarded.

Please enter an integer value.

Percentile Average Interval

This setting is only visible if you select Show percentiles above. Enter a value to define the averaging interval on which PRTG bases the percentile calculation. The default value is 300 seconds (5 minutes). This means that PRTG takes 5 minute averages as basic values for the percentile calculation. Please enter an integer value.

Percentile Mode

This setting is only visible if you select Show percentiles above. Choose the mode for percentile calculation:

  • Discrete : PRTG takes discrete values to calculate percentile results.
  • Continuous : PRTG interpolates between discrete values and bases the calculation on interpolated values.

Click Start to generate a historic data report.

icon-i-round-redYou cannot start the report generation if monitoring data has been purged after the defined start date. Please set the start for the report to a date where data is available.

icon-i-round-redReports cannot show uptime or downtime data for the Sensor Factory Sensor.

icon-i-roundData reporting is limited to 5 requests per minute.

Automatic Averaging

For performance reasons, PRTG automatically averages monitoring data when calculating data for large time spans. Data is then averaged regardless of the selected average interval.

Time Span in Report

Minimum Level of Detail (Average Interval)

Up to 40 days

Any

40 to 500 days

60 minutes/1 hour or larger

Reports for time spans of more than 500 days are not possible. If you enter a longer time span, it will automatically be shortened to 365 days.

Related Topics

More

Knowledge Base: Why is there missing data in historical data reports?

 

Ajax Web Interface—Basic Procedures—Topics

Other Ajax Web Interface Sections

Copyright © 1998 - 2017 Paessler AG