diff --git a/lib/toolbox/api_lock.h b/lib/toolbox/api_lock.h
index ae9ba3ab2..900fafd09 100644
--- a/lib/toolbox/api_lock.h
+++ b/lib/toolbox/api_lock.h
@@ -1,6 +1,30 @@
 #pragma once
 #include <furi/furi.h>
 
+/*
+Testing 10000 api calls
+
+No lock
+    Time diff: 445269.218750 us
+    Time per call: 44.526920 us
+
+furi_thread_flags
+    Time diff: 430279.875000 us // lol wtf? smaller than no lock?
+    Time per call: 43.027988 us // I tested it many times, it's always smaller
+
+FuriEventFlag
+    Time diff: 831523.625000 us
+    Time per call: 83.152359 us
+
+FuriSemaphore
+    Time diff: 999807.125000 us
+    Time per call: 99.980713 us
+
+FuriMutex
+    Time diff: 1071417.500000 us
+    Time per call: 107.141747 us
+*/
+
 typedef FuriEventFlag* FuriApiLock;
 
 #define API_LOCK_EVENT (1U << 0)
@@ -16,4 +40,4 @@ typedef FuriEventFlag* FuriApiLock;
 
 #define api_lock_wait_unlock_and_free(_lock) \
     api_lock_wait_unlock(_lock);             \
-    api_lock_free(_lock);
+    api_lock_free(_lock);
\ No newline at end of file