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VmStat
Linux VmStat command is used to display statistics of virtual memory, kernel threads, disks, system processes, I/O blocks, interrupts, CPU activity, and much more.
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Install VmStat
By default vmstat command is not available under Linux systems you need to install a package called sysstat (a powerful monitoring tool) that includes a vmstat program.
sudo yum install sysstat [On Older CentOS/RHEL & Fedora]
sudo dnf install sysstat [On CentOS/RHEL/Fedora/Rocky Linux & AlmaLinux]
sudo apt-get install sysstat [On Debian/Ubuntu & Mint]
sudo pacman -S sysstat [On Arch Linux]The common usage of vmstat command format is.
# vmstat
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
1 0 43008 275212 1152 561208 4 16 100 105 65 113 0 1 96 3 0