Linux top command interface details

Linux top command interface
The first row shows the same content and the uptime command, [l] can show and hide this area

First Line

top: This is not what it meant, just a name and to01:47:56: current system time

up 1:26: System boot to the elapsed time is now

2 users: currently 2 users online

load average: 0.00,0.00,0.00: System 1 minute, 5 minutes, 15 minutes of CPU load information

Second line:

Tasks: English meaning of work; task; errand.

38 total: well understood, is the current 38 missions, which is 38 processes.

1 running: 1 one process is running

37 sleeping: 37-task sleep

0 stopped: stopped processes

0 zombie: dead processes

Third Line :

Cpu (s): This line shows that the overall CPU Information

0.0% us: the user states the percentage of CPU time the process does not contain renice value is negative, the task of CPU time.

0.7% sy: the percentage of kernel CPU time

0.0% ni: renice value is negative, the task of user-process CPU time percentage. nice is the meaning of the priority

99.3% id: the percentage of idle CPU time

0.0% wa: waiting for I / O, CPU time percentage

0.0% hi: CPU percentage of time the hardware interrupt

0.0% si: CPU percentage of time the soft interrupt

0.0% st: I do not know

Fourth line:

Mem: the meaning of memory

256412k total: total physical memory

30156k used: the amount of physical memory used

226256 free: the amount of free physical memory

8176k buffers: as the amount of physical memory the kernel cache

Fifth Line

Swap: Swap Space

337356k total: total amount of swap

0k used: the amount of used swap

337356k free: the amount of free swap

12160k cached: the total buffer swap

Sixth line:

PID: process ID

USER: Process Owner

PR: process priority, the smaller the priority to be executed

NI : nice Value

VIRT: virtual memory occupied by the process

RES: the amount of physical memory the process

SHR: the process of using shared memory

S: state of the process. S indicates sleep, R for running, Z said rigid state, N is a negative number indicates that the process priority

% CPU: CPU-usage process

% MEM: memory used by the process of physical memory and the percentage of the total

TIME +: The process started after the occupation of the total CPU time that the CPU usage time of the accumulated value.

COMMAND: command name starts the process