utils/ion-statusd/statusd_load.lua

   1 --
   2 -- ion/mod_statusbar/ion-statusd/statusd_load.lua
   3 --
   4 -- Copyright (c) Tuomo Valkonen 2004-2009.
   5 --
   6 -- See the included file LICENSE for details.
   7 --
   8
   9 --
  10 -- We should really use getloadavg(3) instead and move the meter to
  11 -- Ion side to get properly up-to-date loads. But until such an export
  12 -- is made, and we use potentially blocking files and external programs,
  13 -- this meter must be in ion-statusd.
  14 --
  15
  16 local defaults={
  17     update_interval=10*1000,
  18     load_hint="1min",
  19     important_threshold=1.5,
  20     critical_threshold=4.0
  21 }
  22
  23 local settings=table.join(statusd.get_config("load"), defaults)
  24
  25 local load_timer
  26
  27 local function get_hint(v)
  28     local i="normal"
  29     if v then
  30         if v>settings.critical_threshold then
  31             i="critical"
  32         elseif v>settings.important_threshold then
  33             i="important"
  34         end
  35     end
  36     return i
  37 end
  38
  39 local function fmt(l)
  40     if not l then
  41         return "?"
  42     else
  43         return string.format("%0.2f", l)
  44     end
  45 end
  46
  47 local function update_load()
  48     local lds = statusd.getloadavg()
  49     f1, f5, f15 = fmt(lds["1min"]), fmt(lds["5min"]), fmt(lds["15min"])
  50     statusd.inform("load", f1..", "..f5..", "..f15)
  51     statusd.inform("load_hint", get_hint(lds[settings.load_hint]))
  52     statusd.inform("load_1min", f1)
  53     statusd.inform("load_1min_hint", get_hint(lds["1min"]))
  54     statusd.inform("load_5min", f5)
  55     statusd.inform("load_5min_hint", get_hint(lds["5min"]))
  56     statusd.inform("load_15min", f15)
  57     statusd.inform("load_15min_hint", get_hint(lds["15min"]))
  58     load_timer:set(settings.update_interval, update_load)
  59 end
  60
  61 -- Init
  62 --statusd.inform("load_template", "0.00, 0.00, 0.00");
  63
  64 load_timer=statusd.create_timer()
  65 update_load()
  66
  67