From 2fa6314fb44f5136ce726408dc907dc5ff3b6cea Mon Sep 17 00:00:00 2001 From: Robin Gareus Date: Mon, 19 Mar 2018 02:26:24 +0100 Subject: Lua: Lock bindings into memory for rt-scripts Empirically this decreases gc-spike duration (worst-case) by a factor of two and speeds up the average gc-run by a factor of over 4 (depending on the amount of memory used by the plugin). --- libs/ardour/luaproc.cc | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'libs/ardour/luaproc.cc') diff --git a/libs/ardour/luaproc.cc b/libs/ardour/luaproc.cc index 385965b3cf..4e2b32c838 100644 --- a/libs/ardour/luaproc.cc +++ b/libs/ardour/luaproc.cc @@ -111,14 +111,16 @@ LuaProc::LuaProc (const LuaProc &other) LuaProc::~LuaProc () { #ifdef WITH_LUAPROC_STATS if (_info && _stats_cnt > 0) { - printf ("LuaProc: '%s' run() avg: %.3f max: %.3f [ms]\n", + printf ("LuaProc: '%s' run() avg: %.3f max: %.3f [ms] p: %.1f\n", _info->name.c_str (), 0.0001f * _stats_avg[0] / (float) _stats_cnt, - 0.0001f * _stats_max[0]); - printf ("LuaProc: '%s' gc() avg: %.3f max: %.3f [ms]\n", + 0.0001f * _stats_max[0], + _stats_max[0] * (float)_stats_cnt / _stats_avg[0]); + printf ("LuaProc: '%s' gc() avg: %.3f max: %.3f [ms] p: %.1f\n", _info->name.c_str (), 0.0001f * _stats_avg[1] / (float) _stats_cnt, - 0.0001f * _stats_max[1]); + 0.0001f * _stats_max[1], + _stats_max[1] * (float)_stats_cnt / _stats_avg[1]); } #endif lua.do_command ("collectgarbage();"); @@ -135,10 +137,10 @@ LuaProc::init () _stats_cnt = -25; #endif - lua.tweak_rt_gc (); lua.Print.connect (sigc::mem_fun (*this, &LuaProc::lua_print)); // register session object lua_State* L = lua.getState (); + lua_mlock (L, 1); LuaBindings::stddef (L); LuaBindings::common (L); LuaBindings::dsp (L); @@ -154,6 +156,7 @@ LuaProc::init () .addFunction ("name", &LuaProc::name) .endClass () .endNamespace (); + lua_mlock (L, 0); // add session to global lua namespace luabridge::push (L, &_session); @@ -745,7 +748,7 @@ LuaProc::connect_and_run (BufferSet& bufs, int64_t t1 = g_get_monotonic_time (); #endif - lua.collect_garbage_step (100 /*kB*/); + lua.collect_garbage_step (); #ifdef WITH_LUAPROC_STATS if (++_stats_cnt > 0) { int64_t t2 = g_get_monotonic_time (); -- cgit v1.2.3