Mercurial > prosody-modules

annotate mod_measure_memory/mod_measure_memory.lua @ 5549:01a0b67a9afd

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mod_http_oauth2: Add TODO about disabling password grant Per recommendation in draft-ietf-oauth-security-topics-23 it should at the very least be disabled by default. However since this is used by the Snikket web portal some care needs to be taken not to break this, unless it's already broken by other changes to this module.
author Kim Alvefur <zash@zash.se>
date Fri, 16 Jun 2023 00:06:53 +0200
parents e17c937a71b3
children
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2c39af0fb93b mod_measure_memory: Module for polling memory useage from Lua, meminfo() and /proc depending on availability
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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
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5 local measures = {};
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6 setmetatable(measures, {
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7 __index = function (t, k)
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8 local m = measure("amount", "memory."..k, { units = "bytes" }); t[k] = m; return m;
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9 end
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10 });
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11
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12 module:hook("stats-update", function ()
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13 measures.lua(collectgarbage("count")*1024);
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14 end);
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15
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16 if require"lfs".attributes("/proc/self/statm", "mode") == "file" then
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17 local pagesize = module:get_option_number("memory_pagesize", 4096); -- getconf PAGESIZE
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18
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19 module:hook("stats-update", function ()
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20 local statm, err = io.open("/proc/self/statm");
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21 if not statm then
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22 module:log("error", tostring(err));
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23 return;
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24 end
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25 -- virtual memory (caches, opened librarys, everything)
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26 measures.total(statm:read("*n") * pagesize);
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27 -- resident set size (actually used memory)
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28 measures.rss(statm:read("*n") * pagesize);
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29 statm:close();
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30 end);
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31 end