Mercurial > prosody-modules

annotate mod_statistics_mem/mod_statistics_mem.lua @ 5298:12f7d8b901e0

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mod_audit: Support for adding location (GeoIP) to audit events This can be more privacy-friendly than logging full IP addresses, and also more informative to a user - IP addresses don't mean much to the average person, however if they see activity from outside their expected country, they can immediately identify suspicious activity. As with IPs, this field is configurable for deployments that would like to disable it. Location is also not logged when the geoip library is not available.
author Matthew Wild <mwild1@gmail.com>
date Sat, 01 Apr 2023 13:11:53 +0100
parents 403d5cd924eb
children
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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
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2
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3 module:set_global();
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4
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5 local human;
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6 do
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Kim Alvefur <zash@zash.se>
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7 local tostring = tostring;
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8 local s_format = string.format;
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9 local m_floor = math.floor;
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10 local m_max = math.max;
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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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14 function human(num)
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Kim Alvefur <zash@zash.se>
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15 num = tonumber(num) or 0;
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16 local m = 0;
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Kim Alvefur <zash@zash.se>
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17 while num >= multiplier and m < #prefixes do
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18 num = num / multiplier;
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19 m = m + 1;
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20 end
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21
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Kim Alvefur <zash@zash.se>
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22 return s_format("%0."..m_max(0,3-#tostring(m_floor(num))).."f%sB",
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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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28 local pagesize = 4096; -- according to getpagesize()
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29 module:provides("statistics", {
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30 statistics = {
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31 memory_total = { -- virtual memory
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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";
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34 if statm then
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Kim Alvefur <zash@zash.se>
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35 local total = statm:read"*n";
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36 statm:close();
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37 return total * pagesize;
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38 else
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39 module:log("debug", err);
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40 end
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41 end;
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42 tostring = human;
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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
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45 get = function ()
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Kim Alvefur <zash@zash.se>
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46 local statm, err = io.open"/proc/self/statm";
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47 if statm then
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Kim Alvefur <zash@zash.se>
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48 statm:read"*n"; -- Total size, ignore
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Kim Alvefur <zash@zash.se>
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49 local rss = statm:read"*n";
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50 statm:close();
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51 return rss * pagesize;
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52 else
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53 module:log("debug", err);
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54 end
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55 end;
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56 tostring = human;
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57 };
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58 }
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59 });