diff --git a/runtime/luajit.lua b/runtime/luajit.lua
index 36887aa..4ab855c 100644
--- a/runtime/luajit.lua
+++ b/runtime/luajit.lua
@@ -2,6 +2,7 @@ local module = {}
 
 local bit = require('bit')
 local ffi = require('ffi')
+local jit = require('jit')
 
 local u32 = ffi.typeof('uint32_t')
 local u64 = ffi.typeof('uint64_t')
@@ -16,6 +17,8 @@ typedef union {
 } Reinterpret;
 ]]
 
+if jit and jit.opt then jit.opt.start("maxsnap=1000", "loopunroll=500", "maxmcode=2048") end
+
 local function truncate(num)
 	if num >= 0 then
 		return math.floor(num)