Understanding dashboard times
Dashboards are very time sensitive. The data that appears on a dashboard changes or updates when the time frame changes. This can lead to different results.
 
If your dashboard time frame is too short, your network may look better (or worse) than it actually is. A dashboard may take some time to load if you loading a longer period of time that contains a lot of data and reporting intervals. The data and reporting intervals used are determined by the time frame selected at the top of the dashboard. Data on the dashboard only changes when a new time frame is selected or when you manually reload it; it does not automatically update unless you are using dashboard auto-refresh. Any baselines are also affected by your dashboard time.
 
Figure 16: Dashboard time frame
 
Custom
Allows you to create a unique time frame from minutes to years.
Last
 
Hour: If the current time is 11:48, then Last Hour is 10:00-11:00.
12 Hours: If the current time is 11:48, then Last 12 Hours is 23:00 to 11:00.
Day: If today is Wednesday, then Last Day is Tuesday.
Week: If today is Wednesday, then Last Week is from two Sundays ago to the most recent Saturday.
Month: If this month is August, then Last Month is July.
 
This
 
Hour: If the current time is 11:48, then This Hour is 11:00-11:59. Not all minutes may have data.
12 Hours: If the current time is 11:48, then This 12 Hours is 00:00 to 12:00. Not all time intervals may have data.
Day: If today is Wednesday, then This Day is Wednesday starting at 00:00-23:59. Not all time intervals may have data.
Week: If today is Wednesday, then This Week is from the most recent Sunday to Saturday. Not all days may have data.
Month: If this month is August, then This Month is August 1-31. Not all dates may have data.
 
To Date
 
Week: If today is Wednesday, then To Date is Sunday until now on Wednesday.
Month: If today is August 22, then To Date is August 1 until August 22.
 
Trailing
 
Hour: If the current time is 11:48, then Trailing hour is 10:49-11:48.
12 Hours: If the current time is 11:48, then Trailing 12 hours is 23:49 to 11:48 (now).
Day: If today is Wednesday at 11:48, then Trailing day is from Tuesday (yesterday) at 11:48 to 11:48 Wednesday (now).
Week: If today is Wednesday at 11:48, then Trailing week is from last Wednesday at 11:48 to now.
Month: If today is August 22 at 11:48, then Trailing month is July 22 at 11:48 to August 22 at 11:48.
 
 
 
The Apex web interface uses your local time zone. For more information, see How do time zones affect Apex? in the FAQ.
 
Understanding dashboard auto-refresh
When you select the auto-refresh option in your reporting period, dashboards automatically update. There are some factors to be aware of when auto-refresh is enabled.
A primary benefit of using auto-refresh is to see current metrics at-a-glance. With auto-refresh, it is feasible to have a dashboard continuously updating in a browser window while keeping that window on a separate display. In this way, you can stay informed of important networks and applications at-a-glance. Another benefit of auto-refresh is to see frequent dashboard updates when it matters most, such as during scheduled maintenance period or cut-over of systems. During these times, it is important to see that you and your team are not introducing problems and that services are coming back online as expected.
The refresh rate varies depending on the length of the report period. When the reporting period encompasses one hour, the dashboard will refresh approximately every 1 minute. When the reporting period is greater than one hour, the dashboard will refresh approximately every 10 minutes. Any time you navigate away from and revisit a dashboard, it resets its scheduled refresh; this is because revisiting a dashboard triggers a manual refresh (like always).
Viewing a dashboard while auto-refresh is enabled ignores the session timeout feature. This means that viewing a dashboard while auto-refresh is enabled will suspend Enable Session Timeout for as long as the dashboard is in view, so you can continue watching. In this specific scenario, the inactive user will not be signed out of Apex. The normal session timeout behavior (if set) continues to operate as normal when not viewing a dashboard.
Auto-refresh is not always available to choose. The Auto-Refresh check box is available for Week, Day, 12 Hours, and Hour. The option does not appear if Month is chosen. Additionally, the option does not appear if the reporting interval is set to Custom, as that choice requires an absolute time frame—so nothing would change even if the dashboard refreshes. Auto-refresh is available in all other selections.