You can view all performance events and their related details in the Events Timeline pane of Performance Explorer. This is a quick and efficient method of viewing all the threshold events that occurred on the root object during a specified time range, which can be helpful when troubleshooting performance issues.
The Events Timeline pane shows critical, warning, and informational events that occurred on the root object during the selected time range. Critical events are sent when a critical limit in a threshold policy is exceeded. Warning events are sent when a warning limit in a threshold policy is exceeded, or when dynamic thresholds are exceeded. Informational events are sent when ONTAP configuration change events occur.
Critical, warning, and informational events have their own timelines. Single and multiple events are represented by an event point on the timeline. You can position your cursor over an event point to see the event details. To increase the visual granularity of multiple events, you can decrease the time range. This spreads out multiple events into single events, enabling you to separately view and investigate each event.
The event points on the Events Timeline line up vertically with their corresponding spikes in the counter charts trend lines that are displayed below the Events Timeline. This provides a direct visual correlation between events and overall performance.