diff --git a/internal/core/unittest/test_disk_file_manager_test.cpp b/internal/core/unittest/test_disk_file_manager_test.cpp
index 146a34f775..1a2ba4b80e 100644
--- a/internal/core/unittest/test_disk_file_manager_test.cpp
+++ b/internal/core/unittest/test_disk_file_manager_test.cpp
@@ -126,6 +126,7 @@ TEST_F(DiskAnnFileManagerTest, TestThreadPoolBase) {
     for (int i = 0; i < 10; ++i) {
         futs.push_back(thread_pool->Submit(compute, i));
     }
+    std::this_thread::sleep_for(std::chrono::milliseconds(300));
     std::cout << "current thread num" << thread_pool->GetThreadNum()
               << std::endl;
     auto thread_num_2 = thread_pool->GetThreadNum();
@@ -135,7 +136,7 @@ TEST_F(DiskAnnFileManagerTest, TestThreadPoolBase) {
         std::cout << futs[i].get() << std::endl;
     }
 
-    sleep(5);
+    std::this_thread::sleep_for(std::chrono::milliseconds(5000));
     std::cout << "current thread num" << thread_pool->GetThreadNum()
               << std::endl;
     auto thread_num_3 = thread_pool->GetThreadNum();
@@ -183,4 +184,4 @@ TEST_F(DiskAnnFileManagerTest, TestThreadPoolException) {
     } catch (std::exception& e) {
         EXPECT_EQ(std::string(e.what()), "run time error");
     }
-}
\ No newline at end of file
+}