Mercurial > prosody-modules

annotate mod_measure_cpu/mod_measure_cpu.lua @ 4877:adc6241e5d16

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mod_measure_process: Report the enforced limit The soft limit is what the kernel actually enforces, while the hard limit is is how far you can change the soft limit without privileges. Unless the process dynamically adjusts the soft limit, knowing the hard limit is not as useful as knowing the soft limit. Reporting the soft limit and the number of in-use FDs allows placing alerts on expressions like 'process_open_fds / process_max_fds >= 0.95'
author Kim Alvefur <zash@zash.se>
date Tue, 18 Jan 2022 18:55:20 +0100
parents 2af0301af734
children
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2a4c632a24cb mod_measure_cpu: Collect CPU usage statistic
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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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2af0301af734 mod_measure_cpu: Specify units of total CPU time as seconds
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9 local measure_cpu_total = measure("counter", "cpu.clock", { units = "seconds" });
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11 local last_cpu_wall, last_cpu_clock;
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12 module:hook("stats-update", function ()
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13 local new_wall, new_clock = get_time(), get_clock();
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14 local pc = 0;
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15 if last_cpu_wall then
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16 pc = 100/((new_wall-last_cpu_wall)/(new_clock-last_cpu_clock));
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17 end
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18 last_cpu_wall, last_cpu_clock = new_wall, new_clock;
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20 measure_cpu_now(pc);
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e0fb97f47212 mod_measure_cpu: Rename counter metric to avoid name clash (thanks pep.)
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21 measure_cpu_total(new_clock);
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22 end);
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24 -- Some metadata for mod_munin
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25 local munin_meta = mt.new(); munin_meta.data = module:shared"munin/meta";
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26 local key = "global_cpu_amount";
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28 munin_meta:set(key, "", "graph_args", "--base 1000 -r --lower-limit 0 --upper-limit 100");
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29 munin_meta:set(key, "", "graph_title", "Prosody CPU Usage");
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30 munin_meta:set(key, "", "graph_vlabel", "%");
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31 munin_meta:set(key, "", "graph_category", "cpu");
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33 munin_meta:set(key, "percent", "label", "CPU Usage");
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34 munin_meta:set(key, "percent", "min", "0");
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