struct

Hardware::CPU

CPU related informations of your system.

cpu = Hardware::CPU.new
loop do
  sleep 1
  p cpu.usage!.to_i # => 17
end

Constructors

new(number : Int32 | Nil = nil, parse_stats : Bool = true)

Creates a new CPU stat to monitor the given core.

Must be lower than System.cpu_count, or nil for the whole cores in total.

guest

Returns the "guest" stat field.

guest_nice

Returns the "guest_nice" stat field.

idle

Returns the "idle" stat field.

idle_total

Sum of idle and iowait.

iowait

Returns the "iowait" stat field.

irq

Returns the "irq" stat field.

nice

Returns the "nice" stat field.

number

CPU number. nil means the whole cores in total.

softirq

Returns the "softirq" stat field.

steal

Returns the "steal" stat field.

system

Returns the "system" stat field.

total

Sum of used and idle_total

usage(previous_cpu : CPU = self) : Float64

Returns each CPU usage in percentage based on the previous CPU.

usage!

Like #usage, but mutates the instance.

cpu = Hardware::CPU.new
loop do
  sleep 1
  p cpu.usage!.to_i # => 17
end

used

Sum of user, nice, system, irq, softirq and steal.

user

Returns the "user" stat field.