prosody-modules
d95fcde6e39d
mod_measure_lua/mod_measure_lua.lua

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mod_measure_lua/mod_measure_lua.lua @ 4578:d95fcde6e39d

mod_measure_lua: add openmetrics-spirited way to collect lua memory use In the spirit of separate collectors found in other Prometheus packages, this is a separate module to collect metrics related to the lua stack itself.
author Jonas Schäfer <jonas@wielicki.name>
date Sat, 29 May 2021 12:12:17 +0200
child 4601:3c3f45241317
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4577:253df0798996 4578:d95fcde6e39d
1 module:set_global()
2
3 local custom_metric = require "core.statsmanager".metric
4 local gc_bytes = custom_metric(
5 "gauge", "lua_heap", "bytes",
6 "Memory used by objects under control of the Lua garbage collector"
7 ):with_labels()
8
9 module:hook("stats-update", function ()
10 local kbytes = collectgarbage("count");
11 gc_bytes:set(kbytes * 1024);
12 end);
13