Mercurial > prosody-modules

annotate mod_statistics_mem/mod_statistics_mem.lua @ 4210:a0937b5cfdcb

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mod_invites_page: Remove preauth URI button This button is incompatible with the majority of XMPP clients around, yet based on feedback from users, many are drawn to click it when they have any XMPP client installed already. In the case where the user already has software installed, we would prefer them to select it from the software list so they can follow the setup process suited to their specific client (we already track which software supports preauth URIs). If their client is not listed, they can still use the manual registration link instead.
author Matthew Wild <mwild1@gmail.com>
date Fri, 16 Oct 2020 11:03:38 +0100
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
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2
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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;
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Kim Alvefur <zash@zash.se>
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8 local s_format = string.format;
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Kim Alvefur <zash@zash.se>
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9 local m_floor = math.floor;
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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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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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Kim Alvefur <zash@zash.se>
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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
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;
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Kim Alvefur <zash@zash.se>
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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",
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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30 statistics = {
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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";
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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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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";
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";
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Kim Alvefur <zash@zash.se>
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50 statm:close();
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Kim Alvefur <zash@zash.se>
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51 return rss * pagesize;
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52 else
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Kim Alvefur <zash@zash.se>
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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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Kim Alvefur <zash@zash.se>
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56 tostring = human;
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57 };
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Kim Alvefur <zash@zash.se>
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58 }
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59 });