top -d 0.Linux servers have unique performance and usage metrics. You may want to decrease the update interval of top and htop, for a 0.5 second update interval use the -d flag along with htop. On the other hand the top utility is installed by default on most systems. You may need to install htop, on any De bian based distro install it with apt. Get realtime linux memory info with top and htop commandsīoth top and htop are interactive process and system resource viewer, while the htop provides a ncurses based colorful interface. Note: Atop considers RAM usage more than 90% as critical. Run this command as as super user for more detailed results. You can use the -m command line argument to get memory related info. Use the apt command to install it on Ubuntu or any other Debian based distro. This command could be used to check l inux memory usage info including per process usage. Check linux memory usage with the atop commandĪtop is a another Linux memory usage command and system monitor. Note: Actual available memory is always less than the amount get from the dmidecode command, as a portion of the RAM is reserved for graphics and other purpose. This command is particularly useful for RAM upgrade and hardware related troubleshooting purpose, some more useful dmidecode commands here. Which is generally useful while purchasing additional or replacement RAM modules. So, you can see the RAM modules form factor, installation slot, speed, type and other bunch of information. The result is somewhat long, here a little snippet Handle 0x0022, DMI type 17, 34 bytes This command requires root privilege, examples bellow. to get information about installed RAM modules on the system. Use the DMI type 16 and 17 to get the memory related informatio, i.e. This dmidecode command is more hardware specific, useful to know about the computer's hardware without opening it. These commands above could be handy to get linux memory info when other commands are not available, like on embedded systems or OpenWrt routers.Įnjoy free shipping and One-Day delivery, cancel any time.Ĭheck installed memory size with dmidecode command grep -i 'MemTotal:' /proc/meminfo grep -iE 'MemFree:|SwapTotal:' /proc/meminfo awk -F 'MemFree:' '' < /proc/meminfo | tr -s 'n' All results available in this file are formatted into multiples of KB, use cat, grep, awk or your favorite text manipulation command to get the desired result. Reading memory usage from this file is specially useful for scripting purpose. Find linux memory usage from the /proc/meminfo file It's one of the most used command to check memory usage in Linux or any UNIX like OS, even available in most embedded systems including WiFi routers running OpenWrt or DD-Wrt. Show linux memory usage in human readable form for 10 times with 0.5 second interval between results. -s, continuously print results with a delay.-c, display results many times,1 second delay.It's worth to pass few more command line arguments to get more convenient results. Just run the command like bellow, no root privilege required. To check available free memory and swaps, use the free command. Get realtime linux memory info with top and htop commandsĬheck Linux memory usage with the free command. Check linux memory usage with the atop command.Check installed memory size with dmidecode command.Find linux memory usage from the /proc/meminfo file.
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