System Monitor tabs – Resources

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Clicking the Resources tab provides a quick graphical overview of the hardware status of the system:


There are three graphs displayed:
• CPU History: Displays the running real-time CPU percentage utilization. If the system contains more than one processor, each processor is shown as a separate history line.

• Memory and Swap History: Displays two running real-time graphs, one for the amount of memory used by the user and one for the amount of swap space used by the user.

• Network History: Displays the amount of data sent and received from the network interfaces.

Each graph displays the values for the last minute of operation, starting with the current time on the right side of the graph. The Resources tab can give you a quick overall picture of how your system is doing. If you see that the CPU or memory usage is running high, you can flip over to the Processes tab and sort the list based on that parameter.

Besides the graphical view, the Resources tab displays the current real-time information for each value, under the graph. The CPU History displays the current CPU load as a percentage of the CPU capacity. The Memory and Swap History displays the physical and swap memory areas used, as a pie chart icon. The more memory or swap space used, the more of the icon is filled. The Network History displays both the sent and received data on the network interfaces. It displays graphs of the current KB/s data flow on the network interfaces, as well as a numerical value of the total data sent and received since the system was started.

Source of Information : Wiley Ubuntu Linux Secrets

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