diff --git a/src/ulib/system/timer.cpp b/src/ulib/system/timer.cpp
index 63e376e..8031792 100644
--- a/src/ulib/system/timer.cpp
+++ b/src/ulib/system/timer.cpp
@@ -99,7 +99,7 @@ TimerManager::Loop()
 {
     while (!stopped_) {
         // ULOG_TRACE("system.timer_manager", "now: {}", TimeNowInMicroSeconds());
-        // Thread::Sleep(3000000);
+        Thread::Sleep(1);
         MutexGuard timers_guard(timers_lock_);
         // add timer
         {