Index: benchmark/creation/node_cor.js
===================================================================
--- benchmark/creation/node_cor.js	(revision 69e398f0e73ce710840cb39ed816797ca2f9faa1)
+++ benchmark/creation/node_cor.js	(revision 3c64c6684cc8f107bdea7411e2d29dfffaa2a544)
@@ -5,4 +5,9 @@
 
 function * coroutine() { yield }
+
+for ( var i = 0; i < times; i += 1 ) { // warm JIT
+	cor = coroutine()
+}
+
 var hrstart = process.hrtime()
 for ( var i = 0; i < times; i += 1 ) {