The Performance Charts consist of the core Sensor performance metrics like the device/port throughput usage, flow usage, and the CPU usage. Monitoring these core metrics helps you monitor threshold limit and maintain efficient performance of the Sensor. The metrics for all the devices configured to the Manager can be monitored from the Performance Charts page. For a standalone Sensor, you can view and enable the device usage metrics in Devices → <Admin Domain Name> → Devices → <Device Name> → Troubleshooting → Performance Charts.
For Sensors in a stack, you can view and enable the device usage metrics in Devices → <Admin Domain Name> → Devices → <Device Name> → Member Sensors → <Stackname-node id> → Troubleshooting → Performance Charts.
The performance data is available in the Manager dashboard as Throughput Usage, Memory Usage, and CPU Usage monitors. You can navigate to the respective performance charts by clicking on the parameter in the dashboard monitor.
CPU and port throughput metric collection are disabled by default and device throughput and memory metric collection are enabled by default. To enable performance monitoring for data collection, navigate to the Performance Monitoring page from the respective performance charts metric by clicking Performance Monitoring Settings. For more information, see Enable device performance monitoring.
The time filter drop-down list in the Performance Charts page allows you to set your time preference by selecting any of the available options. This selection persists across tabs/windows in the GUI. There are two ways to view performance data:
Summarized – selected by default and displays performance data in an hourly view. Data can be further viewed based on maximum, average, and minimum data usage.
Raw – displays the average value for 3-minute intervals. The drop-down list of maximum, average, and minimum does not apply for this selection.
Note
For the same time period, there are approximately 20x more raw data points than summarized data points.
The charts also allow zoom in and zoom out, that is, you can select a portion of the existing charts and that portion will be zoomed in. To undo the zoom in action, click Zoom Out. The refresh button allows you to pull the latest data points for the selected time range.