Use the Dashboards server setting to specify the default rate at which new monitors are refreshed.
Monitors are refreshed automatically. Each time a refresh occurs, the underlying query runs, and the results are displayed on the dashboard. Choose a default refresh interval for new monitors that is frequent enough to ensure accurate and timely information is displayed without consuming undue network resources. The default interval is five minutes.
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Open the Edit Dashboards page.
Select Menu → Configuration → Server Settings.
From the Setting Categories list, select Dashboards.
Click Edit.
Next to Default refresh interval for new monitors, enter a value between one minute and 60 hours.
Click Save.
New monitors are refreshed according to the interval you specified. Existing monitors retain their original refresh interval.
Note
Users can always change the refresh interval of an individual monitor in the Edit Monitor window.