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--
-- ion/mod_statusbar/ion-statusd/statusd_load.lua
--
-- Copyright (c) Tuomo Valkonen 2004-2006.
--
-- Ion is free software; you can redistribute it and/or modify it under
-- the terms of the GNU Lesser General Public License as published by
-- the Free Software Foundation; either version 2.1 of the License, or
-- (at your option) any later version.
--
--
-- We should really use getloadavg(3) instead and move the meter to
-- Ion side to get properly up-to-date loads. But until such an export
-- is made, and we use potentially blocking files and external programs,
-- this meter must be in ion-statusd.
--
local defaults={
update_interval=10*1000,
load_hint=1,
important_threshold=1.5,
critical_threshold=4.0
}
local settings=table.join(statusd.get_config("load"), defaults)
local loadpat='^(%d+%.%d+).*(%d+%.%d+).*(%d+%.%d+)'
local function get_load_proc()
local f=io.open('/proc/loadavg', 'r')
if not f then
return ""
end
local s=f:read('*l')
f:close()
local st, en, load=string.find(s, '^(%d+%.%d+ %d+%.%d+ %d+%.%d+)')
return string.gsub((load or ""), " ", ", ")
end
local function get_load_uptime()
local f=io.popen('uptime', 'r')
if not f then
return "??"
end
local s=f:read('*l')
f:close()
local st, en, load=string.find(s, 'load averages?:%s*(.*)')
return (load or "")
end
local function detect_load_fn()
if get_load_proc()~="" then
return get_load_proc
else
return get_load_uptime
end
end
local get_load, load_timer
local function get_hint(l)
local v=tonumber(l)
local i="normal"
if v then
if v>settings.critical_threshold then
i="critical"
elseif v>settings.important_threshold then
i="important"
end
end
return i
end
local l1min, l5min, l15min=2+1, 2+2, 2+3
local function update_load()
local l = get_load()
local lds={string.find(l, loadpat)}
statusd.inform("load", l)
statusd.inform("load_hint", get_hint(lds[settings.load_hint+2]))
statusd.inform("load_1min", lds[l1min])
statusd.inform("load_1min_hint", get_hint(lds[l1min]))
statusd.inform("load_5min", lds[l5min])
statusd.inform("load_5min_hint", get_hint(lds[l5min]))
statusd.inform("load_15min", lds[l15min])
statusd.inform("load_15min_hint", get_hint(lds[l15min]))
load_timer:set(settings.update_interval, update_load)
end
-- Init
--statusd.inform("load_template", "0.00, 0.00, 0.00");
get_load=detect_load_fn()
load_timer=statusd.create_timer()
update_load()
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