if not statusd_cpu_p then
  statusd_cpu_p={
	  interval=1*1000,
	  last_idle = 0,
  }
end

local get_cpu_p, cpu_p_timer

local function get_proc_cpu()
    local f=io.open('/proc/stat', 'r')
    if not f then
        return ""
    end
    local s=f:read('*l')
    local st, en, user, nice, system, idle, io_wait, irq, softirq = string.find(s, '(%d+) (%d+) (%d+) (%d+) (%d+) (%d+) (%d+)')
	local total=user+nice+system+idle+io_wait+irq+softirq
	f:close ()
	local idle_diff=idle-statusd_cpu_p.last_idle
	statusd_cpu_p.last_idle=idle
	if idle_diff > 100 then
		idle_diff=100
	end
	if idle_diff < 0 then
		idle_diff=0
	end
	return 100-idle_diff
end

local function meter()
	local m = ""
	for i = 1, 10 do
		if i*10 > get_cpu_p then
				m = m .. "."
		else
				m = m .. "|"
		end
	end
	return m
end

local function p()
	return tostring(get_cpu_p) .. "%"
end

local function update_cpu_p()
	get_cpu_p=get_proc_cpu()
    statusd.inform("cpu_p", p())
    statusd.inform("cpu_meter", meter())
    cpu_p_timer:set(statusd_cpu_p.interval, update_cpu_p)
end

-- Init
get_cpu_p=get_proc_cpu()
cpu_p_timer=statusd.create_timer()
update_cpu_p()