Mercurial > prosody-modules

annotate mod_statistics_mem/mod_statistics_mem.lua @ 2712:d89ab70808f6

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mod_cloud_notify: fix bug when multiple resources are used This bug was triggered under the rare circumstances that a message arrived and one resource was smacks hibernated while the other one(s) were offline. Then only the hibernated resource but not the offline one(s) (or the other way round) got notified.
author tmolitor <thilo@eightysoft.de>
date Mon, 08 May 2017 18:24:29 +0200
parents 403d5cd924eb
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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1 -- Probably Linux-specific memory statistics
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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2
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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3 module:set_global();
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4
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Kim Alvefur <zash@zash.se>
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5 local human;
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Kim Alvefur <zash@zash.se>
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6 do
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Kim Alvefur <zash@zash.se>
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7 local tostring = tostring;
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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8 local s_format = string.format;
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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9 local m_floor = math.floor;
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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10 local m_max = math.max;
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Kim Alvefur <zash@zash.se>
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11 local prefixes = "kMGTPEZY";
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Kim Alvefur <zash@zash.se>
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12 local multiplier = 1024;
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13
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Kim Alvefur <zash@zash.se>
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14 function human(num)
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Kim Alvefur <zash@zash.se>
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15 num = tonumber(num) or 0;
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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16 local m = 0;
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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17 while num >= multiplier and m < #prefixes do
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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18 num = num / multiplier;
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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19 m = m + 1;
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20 end
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21
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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22 return s_format("%0."..m_max(0,3-#tostring(m_floor(num))).."f%sB",
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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23 num, m > 0 and (prefixes:sub(m,m) .. "i") or "");
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24 end
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25 end
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26
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27
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Kim Alvefur <zash@zash.se>
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28 local pagesize = 4096; -- according to getpagesize()
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29 module:provides("statistics", {
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Kim Alvefur <zash@zash.se>
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30 statistics = {
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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31 memory_total = { -- virtual memory
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Kim Alvefur <zash@zash.se>
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32 get = function ()
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Kim Alvefur <zash@zash.se>
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33 local statm, err = io.open"/proc/self/statm";
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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34 if statm then
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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35 local total = statm:read"*n";
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Kim Alvefur <zash@zash.se>
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36 statm:close();
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Kim Alvefur <zash@zash.se>
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37 return total * pagesize;
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38 else
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Kim Alvefur <zash@zash.se>
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39 module:log("debug", err);
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40 end
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Kim Alvefur <zash@zash.se>
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41 end;
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Kim Alvefur <zash@zash.se>
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42 tostring = human;
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
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43 };
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Kim Alvefur <zash@zash.se>
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44 memory_rss = { -- actual in-memory data size
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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45 get = function ()
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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46 local statm, err = io.open"/proc/self/statm";
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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47 if statm then
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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48 statm:read"*n"; -- Total size, ignore
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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49 local rss = statm:read"*n";
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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50 statm:close();
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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51 return rss * pagesize;
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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52 else
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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53 module:log("debug", err);
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Kim Alvefur <zash@zash.se>
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54 end
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Kim Alvefur <zash@zash.se>
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55 end;
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Kim Alvefur <zash@zash.se>
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56 tostring = human;
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
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57 };
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Kim Alvefur <zash@zash.se>
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58 }
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Kim Alvefur <zash@zash.se>
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59 });