view mod_measure_memory/mod_measure_memory.lua @ 2976:df86ce6bb0b4

Implement dummy body message to indicate high priority push This adds a dummy body sent alongside the push when the original message also contained a body to indicate a high priority push. The body can be configured and its contents are generally meaningless with most app servers because it will be stripped before pushed to the client.
author tmolitor <thilo@eightysoft.de>
date Sun, 01 Apr 2018 23:24:33 +0200
parents 07d6077d2db7
children a5a5f85d7ca1
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line source

module:set_global();

local measure = require"core.statsmanager".measure;

local measures = {};
setmetatable(measures, {
	__index = function (t, k)
		local m = measure("sizes", "memory."..k); t[k] = m; return m;
	end
});

module:hook("stats-update", function ()
	measures.lua(collectgarbage("count")*1024);
end);

if require"lfs".attributes("/proc/self/statm", "mode") == "file" then
	local pagesize = module:get_option_number("memory_pagesize", 4096); -- getconf PAGESIZE

	module:hook("stats-update", function ()
		local statm, err = io.open("/proc/self/statm");
		if not statm then
			module:log("error", tostring(err));
			return;
		end
		-- virtual memory (caches, opened librarys, everything)
		measures.total(statm:read("*n") * pagesize);
		-- resident set size (actually used memory)
		measures.rss(statm:read("*n") * pagesize);
		statm:close();
	end);
end