Memory

Top 6 commands to check the memory usage on Linux

Top 6 commands to check the memory usage on Linux

Commands to check the memory usage on Linux

  1. How do I check memory usage on Linux?
  2. How do I find my highest memory utilization on Linux?
  3. How do I check my CPU and memory utilization on Linux?
  4. How much memory Linux is using?
  5. How do I check RAM usage?
  6. How do I check memory usage in Unix?
  7. How do I find the top 5 processes in Linux?
  8. How do I find the top 10 processes in Linux?
  9. How do I find the top 10 memory consuming process in Linux?
  10. Why is Linux CPU usage so high?
  11. Where is VCPU in Linux?
  12. How do I free up RAM on Linux?

How do I check memory usage on Linux?

How to Check Memory Usage in Linux, 5 Simple Commands

  1. cat Command to Show Linux Memory Information.
  2. free Command to Display the Amount of Physical and Swap Memory.
  3. vmstat Command to Report Virtual Memory Statistics.
  4. top Command to Check Memory Use.
  5. htop Command to Find Memory Load of Each Process.

How do I find my highest memory utilization on Linux?

The Linux 'top' command is the best and widely used command that everyone uses to monitor Linux system performance. It displays a real-time view of the system processes running on the interactive interface. You should run the top command in batch mode to identify top memory consuming processes in Linux.

How do I check my CPU and memory utilization on Linux?

  1. How To Check CPU Usage from Linux Command Line. top Command to View Linux CPU Load. mpstat Command to Display CPU Activity. sar Command to Show CPU Utilization. iostat Command for Average Usage.
  2. Other Options to Monitor CPU Performance. Nmon Monitoring Tool. Graphical Utility Option.

How much memory Linux is using?

free Command

free is the most commonly used command for checking the memory usage of a Linux system. It displays information about the total, used, and free memory. Here's what each column mean: total - The total amount of memory that can be used by the applications.

How do I check RAM usage?

Right-click your taskbar and select “Task Manager” or press Ctrl+Shift+Esc to open it. Click the “Performance” tab and select “Memory” in the left pane. If you don't see any tabs, click “More Details” first. The total amount of RAM you have installed is displayed here.

How do I check memory usage in Unix?

5 commands to check memory usage on Linux

  1. free command. The free command is the most simple and easy to use command to check memory usage on linux. ...
  2. 2. /proc/meminfo. The next way to check memory usage is to read the /proc/meminfo file. ...
  3. vmstat. The vmstat command with the s option, lays out the memory usage statistics much like the proc command. ...
  4. top command. ...
  5. htop.

How do I find the top 5 processes in Linux?

2) How to Find High CPU Consumption Process in Linux Using the ps Command

  1. ps : This is a command.
  2. -e : Select all processes.
  3. -o : To customize a output format.
  4. –sort=-%cpu : Sort the ouput based on CPU usage.
  5. head : To display first 10 lines of the output.
  6. PID : Unique ID of the process.

How do I find the top 10 processes in Linux?

Check running process in Linux

  1. Open the terminal window on Linux.
  2. For remote Linux server use the ssh command for log in purpose.
  3. Type the ps aux command to see all running process in Linux.
  4. Alternatively, you can issue the top command or htop command to view running process in Linux.

How do I find the top 10 memory consuming process in Linux?

Press SHIFT+M ---> This will give you a process which takes more memory in descending order. This will give the top 10 processes by memory usage. Also you can use vmstat utility to find the RAM usage at same time not for history.

Why is Linux CPU usage so high?

Common causes for high CPU utilization

Resource issue – Any of the system resources like RAM, Disk, Apache etc. can cause high CPU usage. System configuration – Certain default settings or other misconfigurations can lead to utilization issues. Bug in the code – An application bug can lead to memory leak etc.

Where is VCPU in Linux?

You can use one of the following command to find the number of physical CPU cores including all cores on Linux:

  1. lscpu command.
  2. cat /proc/cpuinfo.
  3. top or htop command.
  4. nproc command.
  5. hwinfo command.
  6. dmidecode -t processor command.
  7. getconf _NPROCESSORS_ONLN command.

How do I free up RAM on Linux?

How to Clear RAM Memory Cache, Buffer and Swap Space on Linux

  1. Clear PageCache only. # sync; echo 1 > /proc/sys/vm/drop_caches.
  2. Clear dentries and inodes. # sync; echo 2 > /proc/sys/vm/drop_caches.
  3. Clear PageCache, dentries and inodes. # sync; echo 3 > /proc/sys/vm/drop_caches. ...
  4. sync will flush the file system buffer. Command Separated by “;” run sequentially.

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