diff --git a/ChangeLog b/ChangeLog
index 6d1c58f244..badb9877da 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Mon Nov 26 22:44:24 2012  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* thread.c (rb_thread_terminate_all): use native_sleep() instead
+	  of rb_thread_schedule(). Otherwise, it consume 100% cpu meaninglessly.
+	  [Bug #5368] [ruby-dev:44546]
+	* thread.c (thread_start_func_2): last sub-thread wakes up main thread.
+
 Mon Nov 26 21:16:04 2012  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* vm_core.h (RUBY_VM_SET_TIMER_INTERRUPT, RUBY_VM_SET_INTERRUPT)
diff --git a/thread.c b/thread.c
index 0ff0794785..3fb97d2342 100644
--- a/thread.c
+++ b/thread.c
@@ -385,7 +385,7 @@ rb_thread_terminate_all(void)
     while (!rb_thread_alone()) {
 	PUSH_TAG();
 	if (EXEC_TAG() == 0) {
-	    rb_thread_schedule();
+	    native_sleep(th, 0);
 	}
 	else {
 	    /* ignore exception */
@@ -522,6 +522,9 @@ thread_start_func_2(rb_thread_t *th, VALUE *stack_start, VALUE *register_stack_s
 	/* delete self other than main thread from living_threads */
 	if (th != main_th) {
 	    st_delete_wrap(th->vm->living_threads, th->self);
+	    if (rb_thread_alone()) {
+		rb_threadptr_interrupt(main_th);
+	    }
 	}
 
 	/* wake up joining threads */