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annotate mod_measure_memory/mod_measure_memory.lua @ 3571:f5ea0b886c7c

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mod_storage_xmlarchive: Limit search to smallest time range in case of inexact match This should improve performance in case the exact days in the 'start' and 'end' range are missing from the index.
author Kim Alvefur <zash@zash.se>
date Fri, 03 May 2019 18:59:38 +0200
parents a5a5f85d7ca1
children e17c937a71b3
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2c39af0fb93b mod_measure_memory: Module for polling memory useage from Lua, meminfo() and /proc depending on availability
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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
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5 local measures = {};
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6 setmetatable(measures, {
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4d38b8c03dfe mod_measure_memory: Silence warnings [luacheck]
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7 __index = function (t, k)
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a5a5f85d7ca1 mod_measure_memory: Use the 'amount' measure type
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8 local m = measure("amount", "memory."..k); t[k] = m; return m;
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9 end
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10 });
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11
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12 module:hook("stats-update", function ()
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13 measures.lua(collectgarbage("count")*1024);
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14 end);
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15
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16 if require"lfs".attributes("/proc/self/statm", "mode") == "file" then
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2c39af0fb93b mod_measure_memory: Module for polling memory useage from Lua, meminfo() and /proc depending on availability
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17 local pagesize = module:get_option_number("memory_pagesize", 4096); -- getconf PAGESIZE
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18
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19 module:hook("stats-update", function ()
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20 local statm, err = io.open("/proc/self/statm");
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21 if not statm then
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22 module:log("error", tostring(err));
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23 return;
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24 end
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25 -- virtual memory (caches, opened librarys, everything)
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26 measures.total(statm:read("*n") * pagesize);
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27 -- resident set size (actually used memory)
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28 measures.rss(statm:read("*n") * pagesize);
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29 statm:close();
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30 end);
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31 end