Software / code / prosody-modules
Annotate
mod_measure_cpu/mod_measure_cpu.lua @ 5931:d194d1012fd3
Updating dox for mod_rest. Ideas expressed / clarified:
1) Making clear that mod_rest isn't to be installed under VirtualHosts AND as a component.
2) Understanding some of the implications of this choice:
A) Changes to user authentication
B) How it affects subdomains
3) More consistent use of domain names for clarity.
4) Using different heading sizes to show scope of section.
Essentially, I added all the tidbits I had to clarify in getting this to work in my
own example.
| author | Ben Smith <bens@effortlessis.com> |
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| date | Mon, 13 May 2024 13:25:13 -0700 |
| parent | 4039:2af0301af734 |
| rev | line source |
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mod_measure_cpu: Collect CPU usage statistic
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1 module:set_global(); |
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2 |
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3 local measure = require"core.statsmanager".measure; |
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4 local mt = require"util.multitable"; |
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5 local get_time = require "socket".gettime; |
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6 local get_clock = os.clock; |
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7 |
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8 local measure_cpu_now = measure("amount", "cpu.percent"); -- Current percentage |
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mod_measure_cpu: Specify units of total CPU time as seconds
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9 local measure_cpu_total = measure("counter", "cpu.clock", { units = "seconds" }); |
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10 |
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11 local last_cpu_wall, last_cpu_clock; |
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12 module:hook("stats-update", function () |
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13 local new_wall, new_clock = get_time(), get_clock(); |
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14 local pc = 0; |
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15 if last_cpu_wall then |
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16 pc = 100/((new_wall-last_cpu_wall)/(new_clock-last_cpu_clock)); |
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17 end |
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18 last_cpu_wall, last_cpu_clock = new_wall, new_clock; |
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19 |
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20 measure_cpu_now(pc); |
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mod_measure_cpu: Rename counter metric to avoid name clash (thanks pep.)
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21 measure_cpu_total(new_clock); |
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22 end); |
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23 |
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24 -- Some metadata for mod_munin |
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25 local munin_meta = mt.new(); munin_meta.data = module:shared"munin/meta"; |
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26 local key = "global_cpu_amount"; |
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27 |
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28 munin_meta:set(key, "", "graph_args", "--base 1000 -r --lower-limit 0 --upper-limit 100"); |
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29 munin_meta:set(key, "", "graph_title", "Prosody CPU Usage"); |
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30 munin_meta:set(key, "", "graph_vlabel", "%"); |
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31 munin_meta:set(key, "", "graph_category", "cpu"); |
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32 |
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33 munin_meta:set(key, "percent", "label", "CPU Usage"); |
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34 munin_meta:set(key, "percent", "min", "0"); |
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35 |
