The Timeframe drop-down is available at the top of all web dashboards and displays the time frame currently used for the dashboard. Click the dropdown and use the Quick, Relative, and Custom tabs to set the time period for information that displays on your web dashboards.
- Quick: Click a button in the Quick tab to use a set time range relative to the present time, or set the time frame to Today or Yesterday.
- Relative: Set a time range between 15 minutes and 999 days, starting from either the present time or a period from 15 minutes to 999 days in the past.
- Custom: Click in the Custom start and Custom end fields and use the calendar and time selectors to set a time range.
The time frame for all dashboards is dynamic and automatically refresh at a 1 minute intervals for all tiles.
The time frame set for the dashboards applies to all its tiles unless a separate time frame is applied to a specific tile. With AppMon 6.5 and later, you can set a specific time frame for an individual tile within a custom dashboard. Click Advanced Settings in the Tile configurator, then select Tile specific timeframe and use the Timeframe dropdown to set a time frame for the tile.
Increasing the time frame to larger period of time, such as 30 days, may result in a slight delay in the rendering of web dashboard content depending on the amount of data in your selected measures.
The time frame of a web dashboard and its chart resolution is set using the time zone of the AppMon Server not the time zone of the device on which you are viewing AppMon Web. This is different from the charts appearing in the AppMon Client, which display data using the local time zone.
The chart resolution drop-down defines the interval between data points that appear on a dashboard tile. By default, the resolution is set to the optimal interval value for the chosen dashboard time frame. For example, if the dashboard time frame is 1 hour, then the resolution is automatically set to 1 min.
The optimal interval value for selected dashboard time frame always appears as Auto in the Resolution list.
You can adjust the resolution to increase or decrease the number of data points on your charts, however, keep in mind that changing the dashboard time frame after setting a custom resolution value may distort your data and make it difficult to interpret. Additionally, the data point calculation is relative to the preceding data point not the first data point of the time frame. As a result, increasing the resolution also increases any aggregate values of each data point as there are more data points in a given interval.
As a best practice, keep the default resolution value set to Auto to ensure that whenever the dashboard time frame is modified the resolution optimally displays.
The following example shows the effect that changing the resolution has on the number of data points displayed on a chart and the aggregation values for each data point. In this example, the following settings are used:
- Dashboard time frame = 1 hour
- Chart #1 resolution - 5 min
- Chart #2 resolution = 1 mins
In addition to fewer data point intervals appearing on the 5 minute resolution chart, the value of the data points are higher. For example, the 15:35 data point on the 5 minute resolution chart has a count of 10, but on the 1 minute resolution chart, it has a count of 3. The difference is because the cumulative aggregation of data for an interval is relative to the previous data point, not the first data point in the chart.
In this example, the data point in the 5 minute resolution chart includes the count of all data from 10:45 am to 11:00 am. In the 1 minute resolution chart, the data point includes only the count of data from 10:59 am to 11:00 am.