# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1642528520 -3600
# Node ID adc6241e5d1625f50734577c16eab2715bebfe02
# Parent  0f5f2d4475b9ef2b3fd3d21cc6ed4403c72f33f8
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'

diff -r 0f5f2d4475b9 -r adc6241e5d16 mod_measure_process/mod_measure_process.lua
--- a/mod_measure_process/mod_measure_process.lua	Tue Jan 18 17:01:18 2022 +0000
+++ b/mod_measure_process/mod_measure_process.lua	Tue Jan 18 18:55:20 2022 +0100
@@ -67,7 +67,7 @@
 		if has_posix then
 			local ok, soft, hard = posix.getrlimit("NOFILE")
 			if ok then
-				max_fds:set(hard)
+				max_fds:set(soft or hard);
 			end
 		end
 	end);