diff --git a/test/integration/main.cpp b/test/integration/main.cpp
index 47e4cea1..2998d888 100644
--- a/test/integration/main.cpp
+++ b/test/integration/main.cpp
@@ -7,41 +7,70 @@
 #include "nsga2.hpp"
 #include "nsga3.hpp"
 
+#include "utility/rcu.hpp"
+#include <thread>
+#include <iostream>
+#include <chrono>
+
+detail::rcu_obj<int> number = 0;
+
 int main()
 {
+    std::jthread reader{ [&] {
+        while (true)
+        {
+            std::scoped_lock _{ number };
+            int& tmp = number.get();
+            std::atomic_thread_fence(std::memory_order_seq_cst);
+            std::this_thread::sleep_for(std::chrono::milliseconds{ 2 });
+            std::atomic_thread_fence(std::memory_order_seq_cst);
+            std::cout << tmp << "\n";
+            assert(0 <= tmp && tmp <= 100);
+        }
+    } };
+
+    std::jthread writer1{ [&] {
+        while (true) number = rng::randomInt(0, 100);
+    } };
+
+    std::jthread writer2{ [&] {
+        while (true) number = rng::randomInt(0, 100);
+    } };
+
+
     //while (true)
-    {
-        binary_sphere();
-        binary_rastrigin();
-        binary_rosenbrock();
-        binary_schwefel();
-        binary_griewank();
-        binary_ackley();
-        binary_levy();
-
-        real_sphere();
-        real_rastrigin();
-        real_rosenbrock();
-        real_schwefel();
-        real_griewank();
-        real_ackley();
-        real_levy();
-
-        perm_tsp52();
-        perm_tsp76();
-        perm_tsp124();
-        perm_tsp152();
-        perm_tsp226();
-        perm_tsp299();
-        perm_tsp439();
-
-        integer_hello();
-        integer_sentence();
-
-        benchmark_nsga2_zdt();
-        benchmark_nsga2_dtlz();
-
-        benchmark_nsga3_zdt();
-        benchmark_nsga3_dtlz();
-    }
+    //{
+    //    binary_sphere();
+    //    //binary_rastrigin();
+    //    //binary_rosenbrock();
+    //    //binary_schwefel();
+    //    //binary_griewank();
+    //    //binary_ackley();
+    //    //binary_levy();
+
+    //    //real_sphere();
+    //    //real_rastrigin();
+    //    //real_rosenbrock();
+    //    //real_schwefel();
+    //    //real_griewank();
+    //    //real_ackley();
+    //    //real_levy();
+
+    //    //perm_tsp52();
+    //    //perm_tsp76();
+    //    //perm_tsp124();
+    //    //perm_tsp152();
+    //    //perm_tsp226();
+    //    //perm_tsp299();
+    //    //perm_tsp439();
+
+    //    //integer_hello();
+    //    //integer_sentence();
+
+    //    //benchmark_nsga2_zdt();
+    //    //benchmark_nsga2_dtlz();
+
+    //    //benchmark_nsga3_zdt();
+    //    //benchmark_nsga3_dtlz();
+    //}
 }
\ No newline at end of file