Mercurial > prosody-modules
view mod_statistics_mem/mod_statistics_mem.lua @ 5648:c217f4edfc4f
misc/mtail: Start of an mtail config
Stashing it here in case anyone wants to continue working on it.
Currently it's only counting log messages by level.
Due to the permissions set by systemd on Prosody logs, mtail never
managed to start correctly until permissions were manually relaxed.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Sun, 17 Sep 2023 13:36:30 +0200 |
parents | 403d5cd924eb |
children |
line wrap: on
line source
-- Probably Linux-specific memory statistics module:set_global(); local human; do local tostring = tostring; local s_format = string.format; local m_floor = math.floor; local m_max = math.max; local prefixes = "kMGTPEZY"; local multiplier = 1024; function human(num) num = tonumber(num) or 0; local m = 0; while num >= multiplier and m < #prefixes do num = num / multiplier; m = m + 1; end return s_format("%0."..m_max(0,3-#tostring(m_floor(num))).."f%sB", num, m > 0 and (prefixes:sub(m,m) .. "i") or ""); end end local pagesize = 4096; -- according to getpagesize() module:provides("statistics", { statistics = { memory_total = { -- virtual memory get = function () local statm, err = io.open"/proc/self/statm"; if statm then local total = statm:read"*n"; statm:close(); return total * pagesize; else module:log("debug", err); end end; tostring = human; }; memory_rss = { -- actual in-memory data size get = function () local statm, err = io.open"/proc/self/statm"; if statm then statm:read"*n"; -- Total size, ignore local rss = statm:read"*n"; statm:close(); return rss * pagesize; else module:log("debug", err); end end; tostring = human; }; } });