mod_measure_memory/mod_measure_memory.lua

   1 module:set_global();
   2
   3 local measure = require"core.statsmanager".measure;
   4
   5 local measures = {};
   6 setmetatable(measures, {
   7         __index = function (t, k)
   8                 local m = measure("amount", "memory."..k); t[k] = m; return m;
   9         end
  10 });
  11
  12 module:hook("stats-update", function ()
  13         measures.lua(collectgarbage("count")*1024);
  14 end);
  15
  16 if require"lfs".attributes("/proc/self/statm", "mode") == "file" then
  17         local pagesize = module:get_option_number("memory_pagesize", 4096); -- getconf PAGESIZE
  18
  19         module:hook("stats-update", function ()
  20                 local statm, err = io.open("/proc/self/statm");
  21                 if not statm then
  22                         module:log("error", tostring(err));
  23                         return;
  24                 end
  25                 -- virtual memory (caches, opened librarys, everything)
  26                 measures.total(statm:read("*n") * pagesize);
  27                 -- resident set size (actually used memory)
  28                 measures.rss(statm:read("*n") * pagesize);
  29                 statm:close();
  30         end);
  31 end