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top -b -n 1 -p 1184

TOP LEGEND

%Cpu(s):

In "top" what are us, sy, ni, id, wa, hi, si and st (for CPU usage)?

us - user cpu time (or) % CPU time spent in user space

sy - system cpu time (or) % CPU time spent in kernel space

ni - user nice cpu time (or) % CPU time spent on low priority processes

id - idle cpu time (or) % CPU time spent idle

wa - io wait cpu time (or) % CPU time spent in wait (on disk)

hi - hardware irq (or) % CPU time spent servicing/handling hardware interrupts

si - software irq (or) % CPU time spent servicing/handling software interrupts

st - steal time % CPU time in involuntary wait by virtual cpu while hypervisor is servicing another processor (or) % CPU time stolen from a virtual machine

Process table

The column headings in the process list are as follows:

PID: Process ID.

USER: The owner of the process.

PR: Process priority.

NI: The nice value of the process.

VIRT: Amount of virtual memory used by the process.

    Virtual memory, labelled VIRT: How much memory your process thinks it’s using. Usually much bigger than RES, thanks to the Linux kernel’s clever memory management.

RES: Amount of resident memory used by the process.

    Resident memory, labelled RES: How much physical memory, how much RAM, your process is using. RES is the important number.

SHR: Amount of shared memory used by the process.

S: Status of the process. (See the list below for the values this field can take).

%CPU: The share of CPU time used by the process since the last update.

%MEM: The share of physical memory used.

TIME+: Total CPU time used by the task in hundredths of a second.

COMMAND: The command name or command line (name + options).

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