Mercurial > prosody-modules

annotate mod_statistics_mem/mod_statistics_mem.lua @ 4515:2e33eeafe962

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mod_muc_markers: Prevent any markers from reaching the archive, even if untracked Original intention was to leave alone things that this module isn't handling. However markers in archives are just problematic without more advanced logic about what is markable and what is not. It also requires a more advanced query in mod_muc_rai to determine the latest markable message instead of the latest archived message. I'd rather keep the "is archivable" and "is markable" definition the same for simplicity. I don't want to introduce yet another set of rules for no reason. No markers in MAM.
author Matthew Wild <mwild1@gmail.com>
date Mon, 22 Mar 2021 15:55:02 +0000
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
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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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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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12 local multiplier = 1024;
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13
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14 function human(num)
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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
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
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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",
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
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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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44 memory_rss = { -- actual in-memory data size
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45 get = function ()
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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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48 statm:read"*n"; -- Total size, ignore
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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 });