Mercurial > prosody-modules

annotate mod_measure_memory/mod_measure_memory.lua @ 2670:6e01878103c0

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mod_smacks: Ignore user when writing or reading session_cache on prosody 0.9 At least under some circumstances it seems that session.username is nil when a user tries to resume his session in prosody 0.9. The username is not relevant when no limiting is done (limiting the number of entries in the session cache is only possible in prosody 0.10), so this commit removes the usage of the username when accessing the prosody 0.9 session cache.
author tmolitor <thilo@eightysoft.de>
date Thu, 06 Apr 2017 02:12:14 +0200
parents a01a3fb96302
children 07d6077d2db7
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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 local have_pposix, pposix = pcall(require, "util.pposix");
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5
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6 local measures = {};
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7 setmetatable(measures, {
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8 __index = function (t, k)
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9 local m = measure("sizes", "memory."..k); t[k] = m; return m;
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10 end
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11 });
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12
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13 module:hook("stats-update", function ()
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14 measures.lua(collectgarbage("count")*1024);
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15 end);
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16
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17 if have_pposix and pposix.meminfo then
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18 module:hook("stats-update", function ()
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19 local m = measures;
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20 for k, v in pairs(pposix.meminfo()) do
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21 m[k](v);
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22 end
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23 end);
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24 end
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25
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26 if require"lfs".attributes("/proc/self/statm", "mode") == "file" then
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27 local pagesize = module:get_option_number("memory_pagesize", 4096); -- getconf PAGESIZE
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29 module:hook("stats-update", function ()
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30 local statm, err = io.open("/proc/self/statm");
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31 if not statm then
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32 module:log("error", tostring(err));
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33 return;
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34 end
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35 -- virtual memory (caches, opened librarys, everything)
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36 measures.total(statm:read("*n") * pagesize);
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37 -- resident set size (actually used memory)
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38 measures.rss(statm:read("*n") * pagesize);
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39 statm:close();
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40 end);
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41 end