On most Linux distributions, the htop command isn't installed by default. It functions similarly to top, but it also allows you to scroll the list vertically and horizontally to examine all processes and their complete command lines. The application htop is a process viewer that allows you to interact with it. The output header contains all the necessary information. Another way to do this is: ps -e -o pid,vsz,comm sort -n -k 2. By default it is sorted by the CPU so if you press the key 4 times you will sort it by VIRT which is virtual memory size giving you your answer. It does, however, display total memory consumption and can be used to monitor total RAM usage. On Linux in the top process you can press < key to shift the output display sort left. The top command is frequently used to inspect per-process memory and CPU consumption. Processes, memory, paging, block IO, traps, and CPU activity are all displayed by vmstat. From man top SORTING of task window For compatibility, this top supports most of the former top sort keys. Virtual memory statistics are reported by the vmstat command, which is a valuable tool. 12 Answers Sorted by: 337 use quick tip using top command in linux/unix top and then hit Shift + m (i.e. Look at the /proc/meminfo pseudo-file if you want to get right to the source: $ cat /proc/meminfo It's worth noting that the free command is simply a quick way to examine data that's already on the screen. Total used free shared buff/cache available On Linux, the free command is the simplest and most direct way to check memory usage $ free -m Let's look at some Linux commands for monitoring memory usage. If you are running out of RAM on your Linux system, you will want to find the culprit in order to solve the problem, either by reconfiguring the RAM-hungry application or by stopping it. All operations must be performed using these commands. When working on servers, the only option is to use shell access. To check memory usage, Linux provides a variety of commands. If process is eating memory eagerly and uses it quite often - I'm not interested in that. I need to find all the processes that ate memory a lot and didn't use it for long time, so they were swapped. In this tutorial, you’ll see how to list processes on Linux, sorted by their memory consumption. The command also reports memory usage for each running process. We'll show you how to test your RAM for both Linux. The question is what processes are eating swap. The ps command in Linux can tell us all sorts of information about the running processes on our system. If you don't have enough RAM, your computer will slow down. You can also use htop or top commands, and hit M (uppercase m) to sort all processes by RAM usage.RAM (random access memory) is used by your computer to handle active apps and tasks. This will list the first 20 applications in reverse order, from the one using more RAM to the one using lest RAM. List running processes ordered by RAM usage ps aux | awk '' | sort -k2rn | head -n 20ģ804 0.6 /usr/lib/gnome-applets/mixer_applet2Ĥ218 0.3 /usr/lib/notification-daemon/notification-daemon We’ll use ps, awk, head and sort with a pipe, to find out which application is consuming our RAM If you are running out of RAM on your Linux system, you will want to find the culprit in order to solve the problem, either by reconfiguring the RAM-hungry application or by stopping it. How to find which process is eating RAM in Linux
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