annotate mod_measure_malloc/mod_measure_malloc.lua @ 4646:072d078be095

mod_storage_xmlarchive: Advertise capabilities (none atm) Both 'total' and 'quota' would be prohibitively expensive for the kind of archives this module targets as it would require counting items across the entire archive.
author Kim Alvefur <zash@zash.se>
date Fri, 13 Aug 2021 01:18:32 +0200
parents 5b4f43b90766
children b9af1ccac98b
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1 module:set_global();
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2
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3 local metric = require"core.statsmanager".metric;
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4 local pposix = require"util.pposix";
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5
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6 local allocated = metric(
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7 "gauge", "malloc_heap_allocated", "bytes",
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8 "Allocated bytes by mode of allocation",
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9 {"mode"}
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10 );
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11
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12 local used = metric(
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13 "gauge", "malloc_heap_used", "bytes",
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14 "Used bytes"
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15 ):with_labels();
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16
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17 local unused = metric(
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18 "gauge", "malloc_heap_unused", "bytes",
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19 "Unused bytes"
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20 ):with_labels();
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21
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22 local returnable = metric(
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23 "gauge", "malloc_heap_returnable", "bytes",
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24 "Returnable bytes"
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25 ):with_labels();
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26
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27 module:hook("stats-update", function ()
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28 meminfo = pposix.meminfo();
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29 if meminfo.allocated then
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30 allocated:with_labels("sbrk"):set(meminfo.allocated);
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31 end
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32 if meminfo.allocated_mmap then
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33 allocated:with_labels("mmap"):set(meminfo.allocated_mmap);
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34 end
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35 if meminfo.used then
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36 used:set(meminfo.used);
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37 end
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38 if meminfo.unused then
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39 unused:set(meminfo.unused);
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40 end
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41 if meminfo.returnable then
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42 returnable:set(meminfo.returnable);
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43 end
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44 end);