conky-config/drawing/Power.lua

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local Util = require 'Util'
local Common = require 'Common'
local Geometry = require 'Geometry'
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return function(update_freq)
local MODULE_Y = 380
local TEXT_SPACING = 20
local PLOT_SEC_BREAK = 20
local PLOT_HEIGHT = 56
local PKG0_PATH = '/sys/class/powercap/intel-rapl:0/energy_uj'
local DRAM_PATH = '/sys/class/powercap/intel-rapl:0:2/energy_uj'
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-----------------------------------------------------------------------------
-- header
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local header = Common.Header(
Geometry.RIGHT_X,
MODULE_Y,
Geometry.SECTION_WIDTH,
'POWER'
)
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-----------------------------------------------------------------------------
-- package 0 power plot
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local power_label_function = function(watts) return watts..' W' end
local power_format_function = function(watts)
return Util.precision_round_to_string(watts, 3).." W"
end
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local build_plot = function(y, label, format_fun)
return Common.initLabeledScalePlot(
Geometry.RIGHT_X,
y,
Geometry.SECTION_WIDTH,
PLOT_HEIGHT,
format_fun,
power_label_function,
PLOT_SEC_BREAK,
label,
0,
update_freq
)
end
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local pkg0 = build_plot(header.bottom_y, 'PKG0', power_format_function)
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-----------------------------------------------------------------------------
-- DRAM power plot
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local CORE_Y = header.bottom_y + TEXT_SPACING + PLOT_SEC_BREAK + PLOT_HEIGHT
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local dram = build_plot(CORE_Y, 'DRAM', power_format_function)
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-----------------------------------------------------------------------------
-- battery power plot
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local ac_format_function = function(watts)
if watts == 0 then
return "A/C"
else
return power_format_function(watts)
end
end
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local battery_draw = build_plot(
CORE_Y + PLOT_SEC_BREAK * 2 + PLOT_HEIGHT,
'Battery Draw',
ac_format_function
)
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-----------------------------------------------------------------------------
-- update functions
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local read_uj = function(path)
return Util.read_file(path, nil, '*n')
end
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local prev_pkg0_uj_cnt = read_uj(PKG0_PATH)
local prev_dram_uj_cnt = read_uj(DRAM_PATH)
local calculate_power = function(prev_cnt, cnt, update_frequency)
if cnt > prev_cnt then
return (cnt - prev_cnt) * update_frequency * 0.000001
else
return 0
end
end
local update = function(cr, is_using_ac)
local pkg0_uj_cnt = read_uj(PKG0_PATH)
local dram_uj_cnt = read_uj(DRAM_PATH)
local pkg0_power = calculate_power(prev_pkg0_uj_cnt, pkg0_uj_cnt, update_freq)
Common.annotated_scale_plot_set(pkg0, cr, pkg0_power)
local dram_power = calculate_power(prev_dram_uj_cnt, dram_uj_cnt, update_freq)
Common.annotated_scale_plot_set(dram, cr, dram_power)
prev_pkg0_uj_cnt = pkg0_uj_cnt
prev_dram_uj_cnt = dram_uj_cnt
if is_using_ac then
Common.annotated_scale_plot_set(battery_draw, cr, 0)
else
local current = Util.read_file('/sys/class/power_supply/BAT0/current_now', nil, '*n')
local voltage = Util.read_file('/sys/class/power_supply/BAT0/voltage_now', nil, '*n')
local power = current * voltage * 0.000000000001
Common.annotated_scale_plot_set(battery_draw, cr, power)
end
end
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-----------------------------------------------------------------------------
-- main functions
local draw_static = function(cr)
Common.drawHeader(cr, header)
Common.annotated_scale_plot_draw_static(pkg0, cr)
Common.annotated_scale_plot_draw_static(dram, cr)
Common.annotated_scale_plot_draw_static(battery_draw, cr)
end
local draw_dynamic = function(cr, is_using_ac)
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update(cr, is_using_ac)
Common.annotated_scale_plot_draw_dynamic(pkg0, cr)
Common.annotated_scale_plot_draw_dynamic(dram, cr)
Common.annotated_scale_plot_draw_dynamic(battery_draw, cr)
end
return {static = draw_static, dynamic = draw_dynamic}
end