prosody-modules
3a5cf8d80089
mod_measure_process/mod_measure_process.lua

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mod_measure_process/mod_measure_process.lua @ 5645:3a5cf8d80089

mod_http_oauth2: Tweak method of centering the UI The percentage here was relative to the viewport width, which on some very wide screens may put the UI slightly outside of the view, requiring scrolling to see. By using a unit relative to the height of the viewport, this is avoided and should work better. But no guarantees, it's still possible to resize the browser or adjust font sizes so that the UI goes out of view.
author Kim Alvefur <zash@zash.se>
date Mon, 31 Jul 2023 07:28:09 +0200
parent 4878:c26f515751af
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 local function limit2num(limit)
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61 if limit == "unlimited" then
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62 return math.huge
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63 end
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64 return limit
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65 end
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66
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67 module:hook("stats-update", function ()
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68 local count = 0
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69 for _ in lfs.dir("/proc/self/fd") do
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70 count = count + 1
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71 end
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72 open_fds:set(count)
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73
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74 if has_posix then
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75 local ok, soft, hard = posix.getrlimit("NOFILE")
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76 if ok then
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77 max_fds:set(limit2num(soft or hard));
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78 end
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79 end
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80 end);
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81 end