View performance monitoring data
The Monitoring page lets you monitor the performance of various system objects. You can monitor specific hardware components, such as drives, processors, and memory, or you can monitor OS components, such as processes or bytes per second transferred by the system's Web server. The Monitoring page includes a graph that displays real-time or historical data for counters.
In order to monitor a performance counter you must first select the counter, which adds it to the list of monitored counters. When you do this you also specify the frequency for polling the item and set performance thresholds and the number of violations that are allowed before an alert is generated.
To view monitored performance counters
- Click Tools > Reporting/Monitoring > Health dashboard.
- In the list of devices, double-click the device you want to configure.
The Real-time inventory and monitoring console opens in another browser window.
- In the toolbox, click Monitoring.
- Click the Active performance counters tab, if necessary.
- In the Counters drop-down list, select the counter you for which want to see a performance graph.
- Select View real-time data to display a graph of real-time performance.
- To display a graph showing performance over a period of time, select View historical data (Keep history) when you select the counter.
On the performance graph, the horizontal axis represents time that has passed. The vertical axis represents the units you are measuring, such as bytes per second (when monitoring file transfers, for example), percentage (when monitoring percentage of the CPU that is in use), or bytes available (when monitoring hard drive space). The line height is not a fixed unit. The height of the line changes relative to the extremes in the data; for one counter the vertical axis might represent 1 to 100 and for another it might represent 1 to 500,000. When the data varies across a wide extreme, minimal changes can appear as a flat line.
Monitored counters are listed with columns for how often they are checked, the number of times the counter is out of range for an alert to be sent, and the upper and lower threshold settings.
Selecting another counter refreshes the graph and resets the units of measurement.
If you receive an alert generated by a counter in the list, right-click the counter and click Acknowledge to clear the alert.
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