Linux Next Top command

Enter the top command

First, the upper part

1. First line (Task queue information)

Represents the current time

Indicates system run time

Number of currently logged on users

The current system load condition (load balancing), which is the average length of the task queue. The three values were 1 minutes, 5 minutes, and 15 minutes ago to the present average.

A smaller number means that the system is easier and the system is already very tense when three numbers are added together and divided by 3 is more than 0.6.

2. Second to third behavior process and CPU information (these contents may exceed two lines when there are multiple CPUs)

Total number of current processes

Number of processes currently running

Number of processes for sleep

Number of processes stopped

Number of zombie processes

CPU (s): 0.4% us: User space consumes CPU percentage, 03% sy: CPU percentage in kernel space, 0.0% ni: Percentage of CPU that has changed priority in user process space, 99.3% ID: Percentage of idle CPU

3.45th Behavior Memory Information

Total Physical Memory

Total amount of physical memory used

Total Free Memory

Amount of memory to use as the kernel cache

Total swap area (somewhat similar to the concept of virtual memory under Windows)

Total number of swap areas used

Total Free Swap Area

The total amount of buffer swap area. The in-memory content is swapped out to the swap area and then swapped in to memory, but the used swap area has not been overwritten, which is the size of the swap area where the content already exists in memory . When the corresponding memory is swapped out again, it is no longer necessary to write to the swap area.

The second half of the part

Column Name	Meaning
Pid	Process ID
PPID	Parent Process ID
Ruser	Real User Name
Uid	User ID of the process owner
USER	User name of the process owner
GROUP	Group Name of Process owner
Tty	The terminal name of the startup process. Processes that are not started from the terminal are displayed as?
PR	Priority level
NI	Nice value. Negative values indicate high priority, positive values indicate low priority
P	Last CPU used, only meaningful in multi-CPU environment
%cpu	CPU time consumption percentage last updated to current
Time	Total CPU time used by the process, in seconds
time+	Total CPU time used by the process, Unit 1/100 sec
%MEM	Percentage of physical memory used by the process
VIRT	The total amount of virtual memory used by the process, in kilobytes. Virt=swap+res
SWAP	The size, in kilobytes, of the virtual memory that the process is using, swapped out.
Res	The size, in kilobytes, of the physical memory that the process used and was not swapped out. Res=code+data
CODE	The amount of physical memory the executable code occupies, in kilobytes
DATA	The amount of physical memory that is used by parts other than executable code (data segment + stack), in kilobytes
Shr	Shared memory size, in kilobytes
Nflt	Number of page faults
Ndrt	The number of pages that were modified the last time it was written to.
S	Process state. d= non-disruptive sleep state R= Run S= Sleep t= Tracking/Stopping z= Zombie Process
COMMAND	Command name/command line
Wchan	If the process is sleeping, the system function name in sleep is displayed
Flags	Task Flag, reference sched.h

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Linux Next Top command