Mercurial > prosody-modules

annotate mod_measure_process/mod_measure_process.lua @ 4813:0a257d1402c3

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mod_muc_rtbl: Optimize case with zero hashes On the assumption that during quiet times between torrents of spam, the hash set would be empty. There would be no point in doing the operations and hashes to check for a match in that case.
author Kim Alvefur <zash@zash.se>
date Mon, 06 Dec 2021 18:19:19 +0100
parents 025cf93acfe9
children adc6241e5d16
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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025cf93acfe9 mod_measure_process: Provide metrics about the process itself
Jonas Schäfer <jonas@wielicki.name>
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1 module:set_global()
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2
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3 local get_cpu_time = os.clock
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4
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5 local custom_metric = require "core.statsmanager".metric
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6 local cpu_time = custom_metric(
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7 "counter", "process_cpu", "seconds",
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8 "CPU time used by Prosody as reported by clock(3)."
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9 ):with_labels()
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10
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11 local lfs = require "lfs"
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12
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13 module:hook("stats-update", function ()
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14 cpu_time:set(get_cpu_time())
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15 end);
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16
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17 if lfs.attributes("/proc/self/statm", "mode") == "file" then
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18 local pagesize = module:get_option_number("memory_pagesize", 4096); -- getconf PAGESIZE
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19
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20 local vsz = custom_metric(
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21 "gauge", "process_virtual_memory", "bytes",
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22 "Virtual memory size in bytes."
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23 ):with_labels()
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24 local rss = custom_metric(
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25 "gauge", "process_resident_memory", "bytes",
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26 "Resident memory size in bytes."
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27 ):with_labels()
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28
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29 module:hook("stats-update", function ()
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30 local statm, err = io.open("/proc/self/statm");
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31 if not statm then
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32 module:log("error", tostring(err));
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33 return;
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34 end
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35 -- virtual memory (caches, opened librarys, everything)
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36 vsz:set(statm:read("*n") * pagesize);
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37 -- resident set size (actually used memory)
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38 rss:set(statm:read("*n") * pagesize);
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39 statm:close();
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40 end);
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41 end
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42
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43 if lfs.attributes("/proc/self/fd", "mode") == "directory" then
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44 local open_fds = custom_metric(
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45 "gauge", "process_open_fds", "",
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46 "Number of open file descriptors."
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47 ):with_labels()
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48
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49 local has_posix, posix = pcall(require, "util.pposix")
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50 local max_fds
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51 if has_posix then
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52 max_fds = custom_metric(
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53 "gauge", "process_max_fds", "",
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54 "Maximum number of open file descriptors"
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55 ):with_labels()
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56 else
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57 module:log("warn", "not reporting maximum number of file descriptors because mod_posix is not available")
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58 end
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59
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60 module:hook("stats-update", function ()
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61 local count = 0
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62 for _ in lfs.dir("/proc/self/fd") do
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63 count = count + 1
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64 end
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65 open_fds:set(count)
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66
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67 if has_posix then
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68 local ok, soft, hard = posix.getrlimit("NOFILE")
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69 if ok then
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70 max_fds:set(hard)
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71 end
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72 end
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73 end);
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74 end