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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local BAT_CURRENT_PATH = '/sys/class/power_supply/BAT0/current_now'
local BAT_VOLTAGE_PATH = '/sys/class/power_supply/BAT0/voltage_now'
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local read_milli = function(path)
return util.read_file(path, nil, '*n') * 0.000001
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end
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local read_pkg0_joules = function()
return read_milli(PKG0_PATH)
end
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local read_dram_joules = function()
return read_milli(DRAM_PATH)
end
local read_battery_current = function()
return read_milli(BAT_CURRENT_PATH)
end
local read_battery_voltage = function()
return read_milli(BAT_VOLTAGE_PATH)
end
local read_battery_power = function(is_using_ac)
if is_using_ac then
return 0
else
return read_battery_current() * read_battery_voltage()
end
end
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local power_label_function = function(plot_max)
local fmt = common.y_label_format_string(plot_max, 'W')
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return function(watts) return string.format(fmt, watts) end
end
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local format_rapl = function(watts)
return util.precision_round_to_string(watts, 3)..' W'
end
local make_rate_plot = function(y, label, init)
return common.make_rate_timeseries(
geometry.RIGHT_X,
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y,
geometry.SECTION_WIDTH,
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PLOT_HEIGHT,
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format_rapl,
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power_label_function,
PLOT_SEC_BREAK,
label,
0,
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update_freq,
init
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)
end
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-----------------------------------------------------------------------------
-- header
local header = common.make_header(
geometry.RIGHT_X,
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MODULE_Y,
geometry.SECTION_WIDTH,
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'POWER'
)
-----------------------------------------------------------------------------
-- package 0 power plot
local pkg0 = make_rate_plot(header.bottom_y, 'PKG0', read_pkg0_joules())
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-----------------------------------------------------------------------------
-- DRAM power plot
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local DRAM_Y = header.bottom_y + TEXT_SPACING + PLOT_SEC_BREAK + PLOT_HEIGHT
local dram = make_rate_plot(DRAM_Y, 'DRAM', read_dram_joules())
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-----------------------------------------------------------------------------
-- battery power plot
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local format_ac = function(watts)
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if watts == 0 then
return "A/C"
else
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return format_rapl(watts)
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end
end
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local BAT_Y = DRAM_Y + PLOT_SEC_BREAK * 2 + PLOT_HEIGHT
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local bat = common.make_tagged_scaled_timeseries(
geometry.RIGHT_X,
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BAT_Y,
geometry.SECTION_WIDTH,
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PLOT_HEIGHT,
format_ac,
power_label_function,
PLOT_SEC_BREAK,
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'Battery Draw',
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0,
update_freq
)
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-----------------------------------------------------------------------------
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-- main functions
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local update = function(is_using_ac)
common.update_rate_timeseries(pkg0, read_pkg0_joules())
common.update_rate_timeseries(dram, read_dram_joules())
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common.tagged_scaled_timeseries_set(bat, read_battery_power(is_using_ac))
end
local draw_static = function(cr)
common.draw_header(cr, header)
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common.tagged_scaled_timeseries_draw_static(pkg0, cr)
common.tagged_scaled_timeseries_draw_static(dram, cr)
common.tagged_scaled_timeseries_draw_static(bat, cr)
end
local draw_dynamic = function(cr)
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common.tagged_scaled_timeseries_draw_dynamic(pkg0, cr)
common.tagged_scaled_timeseries_draw_dynamic(dram, cr)
common.tagged_scaled_timeseries_draw_dynamic(bat, cr)
end
return {static = draw_static, dynamic = draw_dynamic, update = update}
end