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annotate mod_measure_cpu/mod_measure_cpu.lua @ 2494:d300ae5dba87

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mod_smacks: Fix some bugs with smacks-ack-delayed event triggering. The old code had several flaws which are addressed here. First of all this fixes the if statement guarding the event generation There where some timing glitches addressed by this commit as well.
author tmolitor <thilo@eightysoft.de>
date Sun, 12 Feb 2017 21:23:22 +0100
parents 2a4c632a24cb
children 8357cabc31f6
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2a4c632a24cb mod_measure_cpu: Collect CPU usage statistic
Kim Alvefur <zash@zash.se>
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1 module:set_global();
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2
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3 local measure = require"core.statsmanager".measure;
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4 local mt = require"util.multitable";
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5 local get_time = require "socket".gettime;
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6 local get_clock = os.clock;
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8 local measure_cpu_now = measure("amount", "cpu.percent"); -- Current percentage
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10 local last_cpu_wall, last_cpu_clock;
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11 module:hook("stats-update", function ()
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12 local new_wall, new_clock = get_time(), get_clock();
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13 local pc = 0;
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14 if last_cpu_wall then
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15 pc = 100/((new_wall-last_cpu_wall)/(new_clock-last_cpu_clock));
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16 end
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17 last_cpu_wall, last_cpu_clock = new_wall, new_clock;
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18
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19 measure_cpu_now(pc);
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20 end);
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21
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22 -- Some metadata for mod_munin
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23 local munin_meta = mt.new(); munin_meta.data = module:shared"munin/meta";
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24 local key = "global_cpu_amount";
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26 munin_meta:set(key, "", "graph_args", "--base 1000 -r --lower-limit 0 --upper-limit 100");
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27 munin_meta:set(key, "", "graph_title", "Prosody CPU Usage");
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28 munin_meta:set(key, "", "graph_vlabel", "%");
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29 munin_meta:set(key, "", "graph_category", "cpu");
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31 munin_meta:set(key, "percent", "label", "CPU Usage");
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32 munin_meta:set(key, "percent", "min", "0");
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