diff --git a/bench/Makefile b/bench/Makefile
index 3b9e7e73..8fecdf25 100644
--- a/bench/Makefile
+++ b/bench/Makefile
@@ -3,13 +3,19 @@ CXXFLAGS	= -march=native -Wall -Wextra -Wshadow -pedantic -std=c++11 -pthread -W
 CXX_RELEASE_FLAGS = -O3 -flto
 
 
-all:	spdlog-bench spdlog-bench-mt boost-bench boost-bench-mt glog-bench glog-bench-mt
+all:	spdlog-bench spdlog-bench-mt spdlog-bench-async spdlog-bench-mt-async boost-bench boost-bench-mt glog-bench glog-bench-mt
 
 spdlog-bench: spdlog-bench.cpp
 	$(CXX) spdlog-bench.cpp -o spdlog-bench $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
 	
 spdlog-bench-mt: spdlog-bench-mt.cpp
-	$(CXX) spdlog-bench-mt.cpp -o spdlog-bench-mt  $(CXXFLAGS) $(CXX_RELEASE_FLAGS)	
+	$(CXX) spdlog-bench-mt.cpp -o spdlog-bench-mt  $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+	
+spdlog-bench-async: spdlog-bench-async.cpp
+	$(CXX) spdlog-bench-async.cpp -o spdlog-bench-async  $(CXXFLAGS) $(CXX_RELEASE_FLAGS)
+	
+spdlog-bench-mt-async: spdlog-bench-mt-async.cpp
+	$(CXX) spdlog-bench-mt-async.cpp -o spdlog-bench-mt-async  $(CXXFLAGS) $(CXX_RELEASE_FLAGS)							
 
 BOOST_FLAGS	= -DBOOST_LOG_DYN_LINK  -I/home/gabi/devel/boost_1_56_0/ -L/home/gabi/devel/boost_1_56_0/stage/lib -lboost_log  -lboost_log_setup -lboost_filesystem -lboost_system -lboost_thread -lboost_regex -lboost_date_time -lboost_chrono	
 
diff --git a/bench/run_all.sh b/bench/run_all.sh
index cdef0de4..c37b56f8 100755
--- a/bench/run_all.sh
+++ b/bench/run_all.sh
@@ -3,27 +3,36 @@ echo "Running benchmakrs (all with 1000,000 writes to the logs folder"
 echo
 echo "boost-bench (single thread).."
 time ./boost-bench
-echo ==================================
+echo
+echo
 sleep 3
 echo "glog-bench (single thread).."
 time ./glog-bench
-echo ==================================
+echo
+echo
 sleep 3
 echo "spdlog-bench (single thread)"
 time ./spdlog-bench
-echo ==================================
+echo
+echo
 sleep 3
 echo "boost-bench-mt (10 threads, single logger)"..
 time ./boost-bench-mt
-echo ==================================
+echo
+echo
 sleep 3
 echo "glog-bench-mt (10 threads, single logger)"..
 time ./glog-bench-mt
-echo ==================================
+echo
+echo
 sleep 3
 echo "spdlog-bench-mt (10 threads, single logger)"..
 time ./spdlog-bench-mt
-echo ==================================
 echo
+echo
+sleep 3
+echo "spdlog-bench-mt-async (10 threads, single logger)"..
+time ./spdlog-bench-mt-async
+
 
 
diff --git a/bench/spdlog-bench-async.cpp b/bench/spdlog-bench-async.cpp
new file mode 100644
index 00000000..a7c7e97c
--- /dev/null
+++ b/bench/spdlog-bench-async.cpp
@@ -0,0 +1,18 @@
+
+#include "spdlog/spdlog.h"
+
+
+int main(int, char* [])
+{
+    int howmany = 1000000;
+    namespace spd = spdlog;
+   	spd::set_async_mode(howmany, std::chrono::seconds(0));
+    ///Create a file rotating logger with 5mb size max and 3 rotated files
+    auto logger = spd::rotating_logger_mt("file_logger", "logs/spd-sample", 10 *1024 * 1024 , 5);
+
+    logger->set_pattern("[%Y-%b-%d %T.%e]: %v");
+    for(int i  = 0 ; i < howmany; ++i)
+        logger->info() << "spdlog message #" << i << ": This is some text for your pleasure";
+    spd::stop();     
+    return 0;
+}
diff --git a/bench/spdlog-bench-mt-async.cpp b/bench/spdlog-bench-mt-async.cpp
new file mode 100644
index 00000000..98ac371c
--- /dev/null
+++ b/bench/spdlog-bench-mt-async.cpp
@@ -0,0 +1,50 @@
+#include <thread>
+#include <vector>
+#include <atomic>
+
+#include "spdlog/spdlog.h"
+
+#include <iostream>
+using namespace std;
+
+int main(int argc, char* argv[])
+{
+
+    int thread_count = 10;
+    if(argc > 1)
+        thread_count = atoi(argv[1]);
+
+    int howmany = 1000000;
+
+    namespace spd = spdlog;
+	spd::set_async_mode(howmany, std::chrono::seconds(0));
+    ///Create a file rotating logger with 5mb size max and 3 rotated files
+    auto logger = spd::rotating_logger_mt("file_logger", "logs/spd-sample", 10 *1024 * 1024 , 5);
+
+    logger->set_pattern("[%Y-%b-%d %T.%e]: %v");
+
+    std::atomic<int > msg_counter {0};
+    vector<thread> threads;
+
+    for (int t = 0; t < thread_count; ++t)
+    {
+        threads.push_back(std::thread([&]()
+        {
+            while (true)
+            {
+                int counter = ++msg_counter;
+                if (counter > howmany) break;
+                logger->info() << "spdlog message #" << counter << ": This is some text for your pleasure";
+            }
+        }));
+    }
+
+
+    for(auto &t:threads)
+    {
+        t.join();
+    };
+
+	spd::stop();     
+    return 0;
+}
diff --git a/bench/spdlog-bench.cpp b/bench/spdlog-bench.cpp
index 1d0fc0df..8c28dac5 100644
--- a/bench/spdlog-bench.cpp
+++ b/bench/spdlog-bench.cpp
@@ -7,7 +7,7 @@ int main(int, char* [])
     int howmany = 1000000;
     namespace spd = spdlog;
     ///Create a file rotating logger with 5mb size max and 3 rotated files
-    auto logger = spd::rotating_logger_mt("file_logger", "logs/spd-sample", 10 *1024 * 1024 , 5);
+    auto logger = spd::rotating_logger_st("file_logger", "logs/spd-sample", 10 *1024 * 1024 , 5);
 
     logger->set_pattern("[%Y-%b-%d %T.%e]: %v");
     for(int i  = 0 ; i < howmany; ++i)