diff --git a/TinySTL/Profiler/Profiler.cpp b/TinySTL/Profiler/Profiler.cpp
new file mode 100644
index 0000000..74e2a72
--- /dev/null
+++ b/TinySTL/Profiler/Profiler.cpp
@@ -0,0 +1,22 @@
+#include "Profiler.h"
+
+namespace TinySTL{
+	namespace Profiler{
+
+		ProfilerInstance::TimePoint ProfilerInstance::startTime;
+		ProfilerInstance::TimePoint ProfilerInstance::finishTime;
+
+		void ProfilerInstance::start(){
+			startTime = SteadyClock::now(); 
+		}
+		void ProfilerInstance::finish(){
+			finishTime = SteadyClock::now();
+		}
+		void ProfilerInstance::dumpDuringTime(std::ostream& os){
+			typedef std::chrono::duration<double> DurationTime;
+			DurationTime duringTime =
+				std::chrono::duration_cast<DurationTime>(finishTime - startTime);
+			os << "total " << duringTime.count() * 1000 << " milliseconds" << std::endl;
+		}
+	}
+}
\ No newline at end of file
diff --git a/TinySTL/Profiler/Profiler.h b/TinySTL/Profiler/Profiler.h
new file mode 100644
index 0000000..f9333bb
--- /dev/null
+++ b/TinySTL/Profiler/Profiler.h
@@ -0,0 +1,29 @@
+#ifndef _PROFILER_H_
+#define _PROFILER_H_
+
+#include <chrono>
+#include <ctime>
+#include <iostream>
+#include <memory>
+#include <ratio>
+#include <utility>
+
+namespace TinySTL{
+	namespace Profiler{
+
+		class ProfilerInstance{
+		public:
+			typedef std::chrono::steady_clock SteadyClock;
+			typedef SteadyClock::time_point TimePoint;
+		private:
+			static TimePoint startTime;
+			static TimePoint finishTime;
+		public:
+			static void start();
+			static void finish();
+			static void dumpDuringTime(std::ostream& os = std::cout);
+		};
+	}
+}
+
+#endif
\ No newline at end of file
diff --git a/TinySTL/main.cpp b/TinySTL/main.cpp
index e138036..fbb7869 100644
--- a/TinySTL/main.cpp
+++ b/TinySTL/main.cpp
@@ -7,18 +7,26 @@
 #include "Allocator.h"
 #include "Construct.h"
 #include "Vector.h"
+#include "Profiler\Profiler.h"
 #include "UninitializedFunctions.h"
 
 using namespace std;
+using namespace TinySTL::Profiler;
 
 int main(){
-	int array[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
-	//TinySTL::vector<int> svec(array, array + 5);
-	//svec.erase(svec.begin() + 1, svec.begin() + 4);//1,5
-	TinySTL::vector<int> svec(10, 0);
-	svec.insert(svec.begin() + 0, array, array + 10);
-	//svec.insert(svec.begin()+0, 10, 99);
-	for (auto s : svec){ cout << s << endl; }
+	
+	int array[100000] = { 1 };
+	std::vector<int> vec;
+	//TinySTL::vector<int> vec;
+	ProfilerInstance::start();
+	int i = 0;
+	for (; i != 10000000; ++i){
+		//vec.insert(vec.end(), array, array + 1);
+		vec.push_back(i);
+	}
+	//vec.insert(vec.end(), array, array + 100000);
+	ProfilerInstance::finish();
+	ProfilerInstance::dumpDuringTime();
 	system("pause");
 	return 0;
 }