How to Monitor Processor Use in Ubuntu 18.04

by | Feb 24, 2023 | Uncategorized

To troubleshoot operations that are producing errors, the CPU performance must be closely monitored. Considering that a greater core system operates more quickly and effectively. However Task switching occurs when a CPU core is unable to manage the heavy load of a programme. However, excessive context switching will also increase CPU utilisation. It is crucial to effectively track and monitor the CPU as a result. You will learn how to check Ubuntu 18.04’s CPU usage in this tutorial.


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How to Monitor Processor Use in Ubuntu 18.04

An dynamic process viewer is htop. For Linux, there is a free (GPL) ncurses-based process monitor called htop. Similar to the top tool, but with the ability to scroll both vertically and horizontally, it enables you to see every process currently active on the system, along with its complete command line, as well as to view it as a process tree and select multiple processes at once. Process-related tasks (such as terminating and re-initializing) can be completed without supplying their PIDs.

Enter the specified code into the terminal to install htop.

# sudo apt install htop

Run the provided command to display the system’s current CPU usage after the installation procedure has finished.

# htop

mpstat – related data for report processors. The first available processor, designated as processor 0, is the one for which the mpstat command writes actions to standard output. Additionally mentioned are the processors’ overall average activities. On both SMP and UP computers, the mpstat command can be used, but on UP machines, only global average activities will be printed. The CPU utilisation report is the default report if no activity has been chosen.

Enter the specified code in the terminal to install mpstat.

# sudo apt install sysstat

Type the provided command after installing the utility to get a report for each running processor. The output from the “htop” command is identical when using the “mpstat” function, but it is presented more succinctly.

# mpstat

You can periodically take snapshots of CPU utilisation using the “mpstat” tool. mpstat “time” “snapshots,” for instance.

# mpstat 3 10

The command outputs the CPU utilisation every three seconds, repeating this for ten spans before generating a final average report.

vmstat – Stats about virtual RAM are reported. The following tool, despite its name, does more than just keep track of memory data. Processes, memory, paging, block IO, traps, storage activity, and CPU activity are all reported by vmstat. Averages since the last reboot are provided in the first summary generated. Additional accounts provide details on a length delay in the sampling interval. In either scenario, the procedure and memory reports are instantaneous.

To view the vmstat CPU summary, enter the command that is provided.

# vmstat

nmon -benchmarking utility, system administrator, and tuner. System administrator, tuning, and benchmarking utility nmon. The CPU, RAM, network, discs (mini graphs or numbers), file systems, NFS, top processes, resources (Linux version & processes), and on Power micro-partition details can all be seen on this screen.

Enter the specified code into the terminal to install nmon.

# sudo apt-get install nmon

Run the provided command after it has completed to verify usage.

# nmon

This will start the tool and show all the available choices. Press the letter c to examine CPU usage. Press C once more to go back. Press “h” for more choices. Press q to stop.


CPU workload is a measure of how much work the CPU is doing to manage operating system duties and process resources. This metric estimates the average CPU utilisation over time and is used to assess system efficiency. High CPU utilisation can be caused by a variety of things, so identifying the underlying cause is crucial if you want to lower it. This guide described numerous helpful commands and tools to assist users in monitoring and resolving their Ubuntu 18.04 CPU-related problems.

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