Mercurial > prosody-modules

annotate mod_statistics_mem/mod_statistics_mem.lua @ 5149:fa56ed2bacab

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mod_unified_push: Add support for multiple token backends, including stoage Now that we have ACLs by default, it is no longer necessary to be completely stateless. On 0.12, using storage has benefits over JWT, because it does not expose client JIDs to the push apps/services. In trunk, PASETO is stateless and does not expose client JIDs.
author Matthew Wild <mwild1@gmail.com>
date Sat, 14 Jan 2023 14:31:37 +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
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
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
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
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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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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
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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32 get = function ()
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
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";
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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36 statm:close();
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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37 return total * pagesize;
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Kim Alvefur <zash@zash.se>
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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;
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Kim Alvefur <zash@zash.se>
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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
Kim Alvefur <zash@zash.se>
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57 };
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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58 }
403d5cd924eb mod_statistics_mem: Module that collects memory usage stats from /proc
Kim Alvefur <zash@zash.se>
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59 });