diff --git a/CMakeLists.txt b/CMakeLists.txt
index 433540d..b680007 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -39,9 +39,9 @@ add_subdirectory(3party/minilua EXCLUDE_FROM_ALL)
 if(SLED_WITH_PROTOBUF)
   add_subdirectory(3party/protobuf-3.21.12 EXCLUDE_FROM_ALL)
 endif()
-if(NOT TARGET marl)
-  add_subdirectory(3party/marl EXCLUDE_FROM_ALL)
-endif()
+# if(NOT TARGET marl)
+#   add_subdirectory(3party/marl EXCLUDE_FROM_ALL)
+# endif()
 
 if(NOT TARGET rpc_core)
   add_subdirectory(3party/rpc_core EXCLUDE_FROM_ALL)
@@ -106,7 +106,7 @@ target_sources(
 
 target_link_libraries(
   sled
-  PUBLIC rpc_core fmt marl minilua asio
+  PUBLIC rpc_core fmt minilua asio
          # protobuf::libprotoc
   PRIVATE dl)
 # if(CMAKE_SYSTEM_NAME STREQUAL "Linux") target_link_libraries(sled PUBLIC
@@ -191,7 +191,7 @@ if(SLED_BUILD_TESTS)
     src/sled/status_or_test.cc
     src/sled/strings/utils_test.cc
     src/sled/strings/base64_test.cc
-    src/sled/system/fiber/fiber_test.cc
+    # src/sled/system/fiber/fiber_test.cc
     src/sled/system/thread_pool_test.cc
     # src/sled/rx_test.cc
     src/sled/uri_test.cc)
diff --git a/src/sled/event_bus/event_bus.h b/src/sled/event_bus/event_bus.h
index 7bdb663..7b68f5a 100644
--- a/src/sled/event_bus/event_bus.h
+++ b/src/sled/event_bus/event_bus.h
@@ -5,6 +5,7 @@
 #include "sled/sigslot.h"
 #include "sled/synchronization/mutex.h"
 #include <typeindex>
+#include <unordered_map>
 
 namespace sled {
 
@@ -181,7 +182,7 @@ public:
 
 private:
     sled::Mutex mutex_;
-    std::unordered_map<std::type_index, std::function<void(EventBus *)>> cleanup_handlers_ GUARDED_BY(mutex_);
+    std::unordered_map<std::type_index, std::function<void(EventBus *)>> cleanup_handlers_;//GUARDED_BY(mutex_);
 };
 }// namespace sled
 #endif// SLED_EVENT_BUS_EVENT_BUS_H
diff --git a/src/sled/network/physical_socket_server.h b/src/sled/network/physical_socket_server.h
index 5dd354e..7c7290a 100644
--- a/src/sled/network/physical_socket_server.h
+++ b/src/sled/network/physical_socket_server.h
@@ -20,22 +20,22 @@ typedef int SOCKET;
 namespace sled {
 
 enum DispatcherEvent {
-    DE_READ = 0x0001,
-    DE_WRITE = 0x0002,
+    DE_READ    = 0x0001,
+    DE_WRITE   = 0x0002,
     DE_CONNECT = 0x0004,
-    DE_CLOSE = 0x0008,
-    DE_ACCEPT = 0x0010,
+    DE_CLOSE   = 0x0008,
+    DE_ACCEPT  = 0x0010,
 };
 
 class Signaler;
 
 class Dispatcher {
 public:
-    virtual ~Dispatcher() = default;
-    virtual uint32_t GetRequestedEvents() = 0;
+    virtual ~Dispatcher()                      = default;
+    virtual uint32_t GetRequestedEvents()      = 0;
     virtual void OnEvent(uint32_t ff, int err) = 0;
 
-    virtual int GetDescriptor() = 0;
+    virtual int GetDescriptor()       = 0;
     virtual bool IsDescriptorClosed() = 0;
 };
 
@@ -59,9 +59,9 @@ private:
     bool WaitSelect(int64_t cusWait, bool process_io);
 
     uint64_t next_dispatcher_key_ = 0;
-    std::unordered_map<uint64_t, Dispatcher *> dispatcher_by_key_ GUARDED_BY(lock_);
-    std::unordered_map<Dispatcher *, uint64_t> key_by_dispatcher_ GUARDED_BY(lock_);
-    std::vector<uint64_t> current_dispatcher_keys_ GUARDED_BY(lock_);
+    std::unordered_map<uint64_t, Dispatcher *> dispatcher_by_key_;//GUARDED_BY(lock_);
+    std::unordered_map<Dispatcher *, uint64_t> key_by_dispatcher_;//GUARDED_BY(lock_);
+    std::vector<uint64_t> current_dispatcher_keys_;               //GUARDED_BY(lock_);
     Signaler *signal_wakeup_;
     // Mutex lock_;
     RecursiveMutex lock_;
@@ -124,7 +124,7 @@ protected:
     bool udp_;
     int family_ = 0;
     mutable Mutex mutex_;
-    int error_ GUARDED_BY(mutex_);
+    int error_;//GUARDED_BY(mutex_);
     ConnState state_;
     AsyncResolver *resolver_;
 
diff --git a/src/sled/sled.h b/src/sled/sled.h
index a5c475f..9a5e8b0 100644
--- a/src/sled/sled.h
+++ b/src/sled/sled.h
@@ -65,8 +65,8 @@
 #include "sled/synchronization/sequence_checker.h"
 #include "sled/synchronization/thread_local.h"
 // system
-#include "sled/system/fiber/scheduler.h"
-#include "sled/system/fiber/wait_group.h"
+// #include "sled/system/fiber/scheduler.h"
+// #include "sled/system/fiber/wait_group.h"
 #include "sled/system/location.h"
 #include "sled/system/thread.h"
 #include "sled/system/thread_pool.h"
diff --git a/src/sled/synchronization/mutex.h b/src/sled/synchronization/mutex.h
index c9e1a06..7d6a920 100644
--- a/src/sled/synchronization/mutex.h
+++ b/src/sled/synchronization/mutex.h
@@ -11,8 +11,11 @@
 #include "sled/lang/attributes.h"
 #include "sled/units/time_delta.h"
 #include <chrono>
-#include <marl/conditionvariable.h>
-#include <marl/mutex.h>
+// #include <marl/conditionvariable.h>
+// #include <marl/mutex.h>
+#include <atomic>
+#include <condition_variable>
+#include <mutex>
 // #include <condition_variable>
 // #include <mutex>
 #include <type_traits>
@@ -50,7 +53,8 @@ public:
     inline void Unlock() SLED_UNLOCK_FUNCTION(impl_) { impl_.unlock(); }
 
 private:
-    marl::mutex impl_;
+    // marl::mutex impl_;
+    std::mutex impl_;
     friend class ConditionVariable;
     friend class MutexLock;
 };
@@ -110,7 +114,8 @@ public:
 
 private:
     friend class ConditionVariable;
-    marl::lock lock_;
+    // marl::lock lock_;
+    std::unique_lock<std::mutex> lock_;
 };
 
 class ConditionVariable final {
@@ -143,10 +148,11 @@ public:
     }
 
 private:
-    marl::ConditionVariable cv_;
+    std::condition_variable cv_;
+    // marl::ConditionVariable cv_;
 };
 
-class SCOPED_CAPABILITY SharedMutex final {
+class SharedMutex final {
 public:
     enum class Mode {
         kReaderPriority,
diff --git a/src/sled/synchronization/one_time_event.h b/src/sled/synchronization/one_time_event.h
index e9c4820..d6a701c 100644
--- a/src/sled/synchronization/one_time_event.h
+++ b/src/sled/synchronization/one_time_event.h
@@ -25,7 +25,7 @@ public:
     }
 
 private:
-    bool happended_ GUARDED_BY(mutex_) = false;
+    bool happended_;//GUARDED_BY(mutex_) = false;
     Mutex mutex_;
 };
 
diff --git a/src/sled/synchronization/sequence_checker.h b/src/sled/synchronization/sequence_checker.h
index 9e06c6d..d42d82f 100644
--- a/src/sled/synchronization/sequence_checker.h
+++ b/src/sled/synchronization/sequence_checker.h
@@ -30,9 +30,9 @@ public:
 
 private:
     mutable Mutex mutex_;
-    mutable bool attached_ GUARDED_BY(mutex_);
-    mutable pthread_t valid_thread_ GUARDED_BY(mutex_);
-    mutable const TaskQueueBase *valid_queue_ GUARDED_BY(mutex_);
+    mutable bool attached_;                   //GUARDED_BY(mutex_);
+    mutable pthread_t valid_thread_;          //GUARDED_BY(mutex_);
+    mutable const TaskQueueBase *valid_queue_;//GUARDED_BY(mutex_);
 };
 
 class SequenceCheckerDoNothing {
diff --git a/src/sled/system/thread.h b/src/sled/system/thread.h
index ef8a21a..c8f9185 100644
--- a/src/sled/system/thread.h
+++ b/src/sled/system/thread.h
@@ -135,9 +135,9 @@ private:
     void ClearCurrentTaskQueue();
 
     mutable Mutex mutex_;
-    std::queue<std::function<void()>> messages_ GUARDED_BY(mutex_);
-    std::priority_queue<DelayedMessage> delayed_messages_ GUARDED_BY(mutex_);
-    uint32_t delayed_next_num_ GUARDED_BY(mutex_);
+    std::queue<std::function<void()>> messages_;          //GUARDED_BY(mutex_);
+    std::priority_queue<DelayedMessage> delayed_messages_;//GUARDED_BY(mutex_);
+    uint32_t delayed_next_num_;                           //GUARDED_BY(mutex_);
     bool fInitialized_;
     bool fDestroyed_;
     std::atomic<int> stop_;
diff --git a/src/sled/system/thread_pool.h b/src/sled/system/thread_pool.h
index 758a316..ba38075 100644
--- a/src/sled/system/thread_pool.h
+++ b/src/sled/system/thread_pool.h
@@ -2,7 +2,7 @@
 #ifndef SLED_SYSTEM_THREAD_POOL_H
 #define SLED_SYSTEM_THREAD_POOL_H
 #include "sled/synchronization/mutex.h"
-#include "sled/system/fiber/scheduler.h"
+// #include "sled/system/fiber/scheduler.h"
 #include "sled/system/thread.h"
 #include <functional>
 #include <future>