> User CPU time is time spent on the processor running your program's code (or code in libraries)
* system: percent time spent in kernel space
> System CPU time is the time spent running code in the operating system kernel
* idle: percent of CPU used by any program
> Every program or task that runs on a computer system occupies a certain amount of processing time on the CPU. If the CPU has completed all tasks it is idle.
* nice: percent time occupied by user level processes with a positive nice value
> The time the CPU has spent running users' processes that have been "niced"
* irq: percent time spent servicing/handling hardware/software interrupts
> Time servicing interrupts (hardware + software)
* iowait: percent time spent in wait (on disk)
* steal: percent time in involuntary wait by virtual cpu while hypervisor is servicing another processor/virtual machine
> Time spent by the CPU waiting for a IO operations to complete
* steal: percent time in involuntary wait by virtual CPU
> Steal time is the percentage of time a virtual CPU waits for a real CPU while the hypervisor is servicing another virtual processor
* ctx_sw: number of context switches (voluntary + involuntary) per second
> A context switch is a procedure that a computer's CPU (central processing unit) follows to change from one task (or process) to another while ensuring that the tasks do not conflict
* inter: number of interrupts per second
* sw_inter: number of software interrupts per second. Always set to 0 on Windows and SunOS.
* syscal: number of system calls per second. Do not displayed on Linux (always 0).
