diff --git a/runtime/tests/big_fibonacci/get_time.h b/runtime/tests/big_fibonacci/get_time.h
new file mode 100644
index 0000000..db2ffaf
--- /dev/null
+++ b/runtime/tests/big_fibonacci/get_time.h
@@ -0,0 +1,44 @@
+#ifndef GET_TIME_H
+#define GET_TIME_H
+
+#include <time.h>
+#include <sys/time.h>
+#include <stdio.h>
+
+#ifndef WASM
+#ifndef CPU_FREQ
+#define CPU_FREQ 1000
+#endif
+#endif
+
+static unsigned long long
+get_time()
+{
+#if 0
+  unsigned long long int ret = 0;
+  unsigned int cycles_lo;
+  unsigned int cycles_hi;
+  __asm__ volatile ("rdtsc" : "=a" (cycles_lo), "=d" (cycles_hi));
+  ret = (unsigned long long int)cycles_hi << 32 | cycles_lo;
+
+  return ret;
+#else
+	struct timeval Tp;
+	int            stat;
+	stat = gettimeofday(&Tp, NULL);
+	if (stat != 0) printf("Error return from gettimeofday: %d", stat);
+	return (Tp.tv_sec * 1000000 + Tp.tv_usec);
+#endif
+}
+
+static inline void
+print_time(unsigned long long s, unsigned long long e)
+{
+#if 0
+	printf("%llu cycs, %llu us\n", e - s, (e - s) / CPU_FREQ);
+#else
+	fprintf(stdout, "%llu us\n", e - s);
+#endif
+}
+
+#endif /* GET_TIME_H */
diff --git a/runtime/tests/big_fibonacci/main.c b/runtime/tests/big_fibonacci/main.c
new file mode 100644
index 0000000..a5d05d8
--- /dev/null
+++ b/runtime/tests/big_fibonacci/main.c
@@ -0,0 +1,24 @@
+#include <stdio.h>
+// #include "get_time.h"
+unsigned long int
+fib(unsigned long int n)
+{
+	if (n <= 1) return n;
+	return fib(n - 1) + fib(n - 2);
+}
+
+int
+main(int argc, char **argv)
+{
+	unsigned long n = 0, r,r2,r3;
+	scanf("%lu", &n);
+	//	unsigned long long st = get_time(), en;
+	r = fib(29);
+	r2 = fib(29);
+	r3 = fib(29);
+	//	en = get_time();
+	printf("%lu\n", r3);
+
+	//	print_time(st, en);
+	return 0;
+}
diff --git a/runtime/tests/big_fibonacci/run_fib.sh b/runtime/tests/big_fibonacci/run_fib.sh
new file mode 100755
index 0000000..438b4ec
--- /dev/null
+++ b/runtime/tests/big_fibonacci/run_fib.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+
+ITERS=$3
+
+# before running this benchmark,
+# copy fibonacci to fibonacci_native.out
+
+testeach() {
+	tmp_cnt=${ITERS}
+	exe_relpath=$1
+
+	echo "${exe_relpath} ($2) for ${tmp_cnt}"
+
+	while [ ${tmp_cnt} -gt 0 ]; do
+		bench=$(echo $2 | $exe_relpath 2> /dev/null)
+		tmp_cnt=$((tmp_cnt - 1))
+		echo "$bench"
+	done
+
+	echo "Done!"
+}
+
+MAXNUM=$2
+
+tmp1_cnt=${MAXNUM}
+
+while [ ${tmp1_cnt} -gt 28 ]; do
+	testeach ./fibonacci_$1.out ${tmp1_cnt}
+	tmp1_cnt=$((tmp1_cnt - 1))
+done
+
+echo "All done!"