Mercurial > prosody-modules
annotate mod_measure_process/mod_measure_process.lua @ 4764:a754f7e380b2
mod_dnsupdate: Rewrite port config vs DNS comparison code
I'm not sure if it was correct, which means it was hard to understand
and thus needed to be simplified. Hope this accomplishes that.
author | Kim Alvefur <zash@zash.se> |
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date | Mon, 08 Nov 2021 23:03:14 +0100 |
parents | 025cf93acfe9 |
children | adc6241e5d16 |
rev | line source |
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mod_measure_process: Provide metrics about the process itself
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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 |