util.startup: Set more aggressive defaults for GC
Testing has demonstrated that the default GC parameters are not
sufficient to prevent runaway memory growth when running under Lua 5.2
and Lua 5.3.
Setting the GC speed to 500 was tested on Lua versions 5.1->5.4 and did
not display unbounded memory growth.
--- a/util/startup.lua Fri Apr 30 21:20:14 2021 +0100
+++ b/util/startup.lua Fri May 07 16:41:39 2021 +0100
@@ -12,7 +12,13 @@
local original_logging_config;
-local default_gc_params = { mode = "incremental", threshold = 105, speed = 250 };
+local default_gc_params = {
+ mode = "incremental";
+ -- Incremental mode defaults
+ threshold = 105, speed = 500;
+ -- Generational mode defaults
+ minor_threshold = 20, major_threshold = 50;
+};
local short_params = { D = "daemonize", F = "no-daemonize" };
local value_params = { config = true };