diff --git a/tile/fiber/detail/fiber_test.cc b/tile/fiber/detail/fiber_test.cc
index 3481e44..dd4e852 100644
--- a/tile/fiber/detail/fiber_test.cc
+++ b/tile/fiber/detail/fiber_test.cc
@@ -7,7 +7,7 @@ namespace fiber {
 namespace detail {
 
 TEST(Fiber, Base) {
-  constexpr auto kMaxCnt = 5000;
+  constexpr auto kMaxCnt = 5000000;
   int cnt = 0;
 
   // 0 -> master fiber
@@ -24,16 +24,14 @@ TEST(Fiber, Base) {
         ASSERT_EQ(Fiber::Current(), fibers[i].get());
         ++cnt;
         Fiber::MasterFiber()->Resume();
-        TILE_LOG_INFO("worke cnt: {}", cnt);
       }
     }));
   }
 
   while (cnt < kMaxCnt) {
     int old = cnt;
-    auto next_fiber = fibers[Random(1, 1)].get();
+    auto next_fiber = fibers[Random(1, 9)].get();
 
-    TILE_LOG_INFO("cnt: {}", cnt);
     next_fiber->Resume();
     ASSERT_EQ(old + 1, cnt);
     ASSERT_EQ(Fiber::Current(), Fiber::MasterFiber());