%MEM indicates the percentage of the memory used by a process. It shows the amount of free and used memory on your Linux system. %CPU indicates the percentage of the CPU time used by a process. The free command in Linux has the simplest output. We can find the process id of a named process using the ps. When using the -p parameter, we often want to include the process id. If we want to have an idea of a single process, we can use the -p parameter. This command displays a real-time view of a running system in the command prompt. To use this tool, go to the Applications menu, click on the System. Usually, we can use the Linux built-in top command. Run ps aux | head -4 to view the top three processes that occupy CPUs. The System Monitor is a graphical tool that displays the system processes and resource usage. If the sum of %usr and %sys is greater than 80%, CPUs become a bottleneck of system performance. name: Memory wincommand: systeminfo register: memoryresults. Run lsdev -Cc processor to view the number of CPU cores. name: CPU usage wincommand: wmic cpu get loadpercentage register: cpuresults - name: Memory wincommand: wmic OS get FreePhysicalMemory /Value register: memresults. To check the usage of individual pods in Kubernetes type the following commands in terminal. If fre is smaller than 120, the system automatically closes processes to release free lists. fre indicates the number of free lists.avm (unit: 4 KB) indicates the number of active virtual pages allocated to a working segment when a process is running.wa indicates the time spent waiting for I/Os and is not too large generally.For CentOS or RHEL operating systems, you can install it using the following command: yum install sysstat -y. The Bash script can also be configured to send an email alert when the CPU or memory usage exceeds a certain threshold. The script can collect usage information from the /proc/stat file and then store it in a log file. The output of this command varies according to the Linux distribution used.
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