mod_log_ringbuffer: Detach event handlers on logging reload (thanks Menel)
Otherwise the global event handlers accumulate, one added each time
logging is reoladed, and each invocation of the signal or event triggers
one dump of each created ringbuffer.
module:set_global();
local measure = require"core.statsmanager".measure;
local measures = {};
setmetatable(measures, {
__index = function (t, k)
local m = measure("amount", "memory."..k, { units = "bytes" }); 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