view mod_measure_cpu/mod_measure_cpu.lua @ 5186:fa3059e653fa

mod_http_oauth2: Implement the Implicit flow Everyone says this is insecure and bad, but it's also the only thing that makes sense for e.g. pure JavaScript clients, but hey implement this even more complicated thing instead!
author Kim Alvefur <zash@zash.se>
date Thu, 02 Mar 2023 22:06:50 +0100
parents 2af0301af734
children
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module:set_global();

local measure = require"core.statsmanager".measure;
local mt = require"util.multitable";
local get_time = require "socket".gettime;
local get_clock = os.clock;

local measure_cpu_now = measure("amount", "cpu.percent"); -- Current percentage
local measure_cpu_total = measure("counter", "cpu.clock", { units = "seconds" });

local last_cpu_wall, last_cpu_clock;
module:hook("stats-update", function ()
	local new_wall, new_clock = get_time(), get_clock();
	local pc = 0;
	if last_cpu_wall then
		pc = 100/((new_wall-last_cpu_wall)/(new_clock-last_cpu_clock));
	end
	last_cpu_wall, last_cpu_clock = new_wall, new_clock;

	measure_cpu_now(pc);
	measure_cpu_total(new_clock);
end);

-- Some metadata for mod_munin
local munin_meta = mt.new(); munin_meta.data = module:shared"munin/meta";
local key = "global_cpu_amount";

munin_meta:set(key, "", "graph_args", "--base 1000 -r --lower-limit 0 --upper-limit 100");
munin_meta:set(key, "", "graph_title", "Prosody CPU Usage");
munin_meta:set(key, "", "graph_vlabel", "%");
munin_meta:set(key, "", "graph_category", "cpu");

munin_meta:set(key, "percent", "label", "CPU Usage");
munin_meta:set(key, "percent", "min", "0");