![]() What is the best way to learn Linux history? There is no single answer. By running the sar command, you can see previous CPU usage. The top command displays the current day’s CPU usage, but it does not show historical data. By the end of this article, you should have a better understanding of how to check your CPU utilization in Linux, and how to interpret the results for your own specific needs. ![]() We will also discuss how to interpret the data and use it to make informed decisions about your system’s performance. In this article, we’ll discuss how to check the previous day’s CPU utilization in Linux, including tips for understanding the results and troubleshooting any potential issues. Checking the CPU utilization of the past day is especially useful when you want to get an overview of how your system is performing over time. Once that is divided by the number of cores ( nproc -all), you will get the current CPU usage: top -bn2 | grep '%Cpu' | tail -1 | grep -P '(.|.If you are a Linux user, you may have come across the need to check your CPU utilization in order to ensure your system is running optimally and identify any potential issues with your hardware or software. If you want to know the total CPU usage on your system every second, you can use the id attribute (IDLE) of the top output. The 45% usage you're seeing for your application is most likely the usage on one core of the CPU, which is why you can have the sum of the numbers in the %CPU column exceed 100%.
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