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This article mainly introduces the relevant knowledge of "how to view system memory in Linux". The editor shows you the operation process through an actual case. The operation method is simple and fast, and it is practical. I hope this article "how to view system memory in Linux" can help you solve the problem.

1. / proc/meminfo

One of the easiest ways to check memory usage is through "/ proc/meminfo". This dynamically updated virtual file is actually a source of information for memory-related tools such as free,top and ps. "/ proc/meminfo" has everything from the amount of free / idle physical memory to the number of caches waiting to be written or the number of writes back to disk, as long as you want information about memory usage. Memory information for specific processes can also be obtained through "/ proc/statm" and "/ proc/status".

1. $cat / proc/meminfo

2. Atop

The atop command is an interactive ncurses-based system and process monitoring tool for terminal environments. It shows dynamically updated summaries of system resources (CPU, memory, network, input / output, kernel) and uses eye-catching colors to mark high-load parts of the system with warning messages. It also provides a view of thread (or user) resource usage similar to top, so the system administrator can find out which process or user is causing the system load. The memory statistics report includes total / idle memory, cached / buffered memory, and committed virtual memory.

1. $sudo atop

3. Free

The free command is a quick and easy way to get an overview of memory usage, which is obtained from "/ proc/meminfo". It provides a snapshot to show the total / idle physical memory and system swap, as well as used / idle kernel buffers.

1. $free-h

4. GNOME System Monitor

GNOME System Monitor is a graphical interface application that shows recent historical information on the utilization of system resources, including CPU, memory, swap, and network. It also provides a process view with CPU and memory usage.

1. $gnome-system-monitor

5. Htop

The htop command is an interactive process view based on ncurses that shows the memory usage of each process in real time. It can report the resident memory size (RSS) of all running processes, the total size of programs in memory, library size, shared page size and dirty page size. You can scroll through the list of processes horizontally or vertically.

1. $htop

6. KDE System Monitor

Just as the GNOME desktop has GNOME System Monitor, the KDE desktop has its own counterpart application: KDE System Monitor. The functionality of this tool is very similar to the GNOME version, that is, it also shows a real-time history of system resource usage and CPU/ memory consumption for each process.

1. $ksysguard

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