view mod_rawdebug/mod_rawdebug.lua @ 4877:adc6241e5d16

mod_measure_process: Report the enforced limit The soft limit is what the kernel actually enforces, while the hard limit is is how far you can change the soft limit without privileges. Unless the process dynamically adjusts the soft limit, knowing the hard limit is not as useful as knowing the soft limit. Reporting the soft limit and the number of in-use FDs allows placing alerts on expressions like 'process_open_fds / process_max_fds >= 0.95'
author Kim Alvefur <zash@zash.se>
date Tue, 18 Jan 2022 18:55:20 +0100
parents c5c583fae25d
children
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module:set_global();

local tostring = tostring;
local filters = require "util.filters";

local function log_send(t, session)
	if t and t ~= "" and t ~= " " then
		session.log("debug", "SEND(%d): %s", #t, tostring(t));
	end
	return t;
end

local function log_recv(t, session)
	if t and t ~= "" and t ~= " " then
		session.log("debug", "RECV(%d): %s", #t, tostring(t));
	end
	return t;
end

local function init_raw_logging(session)
	filters.add_filter(session, "bytes/in",  log_recv, -10000);
	filters.add_filter(session, "bytes/out", log_send,  10000);
end

filters.add_filter_hook(init_raw_logging);

function module.unload() -- luacheck: ignore
	filters.remove_filter_hook(init_raw_logging);
end