linux top command

top command displays processor activity of your Linux box and also displays tasks managed by kernel in real-time. It'll show processor and memory are being used and other information like running processes. This may help you to take correct action.

1. How do I run a top command in Linux?
2. What is the output of top command in Linux?
3. What is %CPU in top command?
4. How do I find the top 10 processes in Linux?
5. How do I find the top 5 processes in Linux?
6. How do you explain top command?
7. How do you kill a command in Linux?
8. What is a good CPU time?
9. How do I get 100 CPU usage on Linux?
10. Why is Linux CPU usage so high?
11. How do you sort CPU in top command?
12. What is PS EF command in Linux?
13. How do I find top processes in Linux?
14. How do I find RAM in Linux?

How do I run a top command in Linux?

Kill a Running Process with Top Command

Hit the k key while the top command is running. A prompt will ask you about the PID you want to kill. Enter the required process ID by viewing it from the list and then hit enter. The process and the corresponding application will close almost immediately.

What is the output of top command in Linux?

For each CPU, top displays three numbers and the graph. From left to right, the numbers are as follows: The combined us and ni percentage (user space+tasks with nonstandard nice settings).

What is %CPU in top command?

%CPU -- CPU Usage : The percentage of your CPU that is being used by the process. By default, top displays this as a percentage of a single CPU. On multi-core systems, you can have percentages that are greater than 100%. For example, if 3 cores are at 60% use, top will show a CPU use of 180%.

How do I find the top 10 processes in Linux?

How To Check Top 10 CPU Consuming Process In Linux Ubuntu

1. -A Select all processes. Identical to -e.
2. -e Select all processes. Identical to -A.
3. -o User-defined format. Option of ps allows to specify the output format. ...
4. –pid pidlist process ID. ...
5. –ppid pidlist parent process ID. ...
6. –sort Specify sorting order.
7. cmd simple name of executable.
8. %cpu CPU utilization of the process in “##.

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 you explain top command?

Top command shows all running processes in the server. It shows you the system information and the processes information just like up-time, average load, tasks running, no. of users logged in, no. of CPU processes, RAM utilisation and it lists all the processes running/utilised by the users in your server.

How do you kill a command in Linux?

The syntax of the kill command takes the following form: kill [OPTIONS] [PID]... The kill command sends a signal to specified processes or process groups, causing them to act according to the signal.
...
kill Command

1. 1 ( HUP ) - Reload a process.
2. 9 ( KILL ) - Kill a process.
3. 15 ( TERM ) - Gracefully stop a process.

What is a good CPU time?

What is Normal CPU Usage for Windows 10? Normal CPU usage for a decent CPU, GPU and SSD in Windows 10, at idle, is around 2% to 4%. That's when you're not doing anything, no CPU intensive tasks are running, and no Windows 10 updates or after-update checks are running.

How do I get 100 CPU usage on Linux?

To create a 100% CPU load on your Linux PC, do the following.

1. Open your favorite terminal app. Mine is xfce4-terminal.
2. Identify how many cores and threads your CPU has. You can get detailed CPU info with the following command: cat /proc/cpuinfo. ...
3. Next, execute the following command as root: # yes > /dev/null &

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.

How do you sort CPU in top command?

To add to the answers already P (upper case P) makes top order by CPU, Then hit W (again upper case W) to save. You may need to hit Shift + f or Shift + o to get into the sort field sub-menu, then hit k for %CPU (followed by Enter to exit the menu). k means kill when you are in the default "global" command mode.

What is PS EF command in Linux?

This command is used to find the PID (Process ID, Unique number of the process) of the process. Each process will have the unique number which is called as PID of the process.

How do I find top processes in Linux?

top. The top command is the traditional way to view your system's resource usage and see the processes that are taking up the most system resources. Top displays a list of processes, with the ones using the most CPU at the top. To exit top or htop, use the Ctrl-C keyboard shortcut.

How do I find RAM in Linux?

Linux

1. Open the command line.
2. Type the following command: grep MemTotal /proc/meminfo.
3. You should see something similar to the following as output: MemTotal: 4194304 kB.
4. This is your total available memory.