
%gnice - Displays the percentage of time spent by the CPU or CPUs to run a niced guest.
%guest - Displays the percentage of time spent by the CPU or CPUs to run a virtual processor.
%steal - Displays the percentage of time spent in involuntary wait by the virtual CPU or CPUs while the hypervisor was servicing another virtual processor. %soft - Displays the percentage of time spent by the CPU or CPUs to service software interrupts. %irq - Displays the percentage of time spent by the CPU or CPUs to service hardware interrupts. %iowait - Displays the percentage of time that the CPU or CPUs were idle during which the system had an outstanding disk I/O request. %sys - Displays the percentage of CPU utilization that occurred while executing at the system level (kernel). %nice - Displays the percentage of CPU utilization that occurred while executing at the user level with nice priority. %usr - Displays the percentage of CPU utilization that occurred while executing at the user level (application). all - Indicates that statistics are calculated as averages among all processors. 02:18:23 - The time when you run mpstat. Let me break down the above output and tell you what each option does.