How do you interpret top command output?

How do you interpret top command output?

S – indicates the status of the process: S=sleep R=running Z=zombie (S) %CPU – This is the percentage of CPU used by this process (0.3) %MEM – This is the percentage of RAM used by the process (0.7) TIME+ –This is the total time of activity of this process (0:17.75)

What does top output mean?

“Top” displays system summary information and a list of all processes and threads currently being managed by the Linux kernel. It is also an interactive program, meaning that the output can be customized and manipulated while it’s running.

How do you read top memory usage?

Viewing memory usage in top Hit Shift+M to see the list sorted by memory usage. Your display may look slightly different than this example from a running Fedora Workstation: There are three columns showing memory usage to examine: VIRT, RES, and SHR.

What does the top command display?

top command is used to show the Linux processes. It provides a dynamic real-time view of the running system. Usually, this command shows the summary information of the system and the list of processes or threads which are currently managed by the Linux Kernel.

What is the nice value in Linux?

Nice value — Nice values are user-space values that we can use to control the priority of a process. The nice value range is -20 to +19 where -20 is highest, 0 default and +19 is lowest.

How do you run a top?

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.

How do you sort memory by top output?

Sort By memory Usage per-process in the interactive menu

1. press Shift+f to enter the interactive menu.
2. press the up or down arrow until the %MEM choice is highlighted.
3. press s to select %MEM choice.
4. press enter to save your selection.
5. press q to exit the interactive menu.

How do you sort top output?

By default, top sorts its entries by the CPU usage. You can change that by pressing M to sort by memory usage. To reverse sort your output, press R. To return to sorting by CPU, press P.