24.3. Viewing CPU Usage

24.3.1. Using the System Monitor Tool

The Resources tab of the System Monitor tool allows you to view the current CPU usage on the system.
To start the System Monitor tool, either select ApplicationsSystem ToolsSystem Monitor from the panel, or type gnome-system-monitor at a shell prompt. Then click the Resources tab to view the system's CPU usage.
System Monitor — Resources

Figure 24.3. System Monitor — Resources

In the CPU History section, the System Monitor tool displays a graphical representation of the CPU usage history and shows the percentage of how much CPU is currently in use.