Mercurial > prosody-modules
comparison 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 |
| parents | |
| children | 3c3f45241317 |
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| 4577:253df0798996 | 4578:d95fcde6e39d |
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| 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 |