Mercurial > prosody-modules
annotate mod_statistics_mem/mod_statistics_mem.lua @ 4565:3b2ae854842c
mod_muc_bot: Save occupant to room
This has some side-effects:
Firstly, the bot shows up in occupant list, which is nice. Secondly, the
bot starts receiving messages from the room which might be wanted, but
it would be better to join the room for real in this case.
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 10 Apr 2021 19:23:25 +0200 |
parents | 403d5cd924eb |
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mod_statistics_mem: Module that collects memory usage stats from /proc
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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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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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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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33 local statm, err = io.open"/proc/self/statm"; |
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34 if statm then |
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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 }); |