diff -r c97db0855565 -r 758c07667682 src/share/vm/services/memoryPool.hpp
--- a/src/share/vm/services/memoryPool.hpp	Tue Feb 04 17:38:01 2020 +0800
+++ b/src/share/vm/services/memoryPool.hpp	Tue Feb 04 18:13:14 2020 +0800
@@ -198,7 +198,7 @@
                                bool support_usage_threshold);
 
   MemoryUsage get_memory_usage();
-  size_t used_in_bytes()            { return _space->used(); }
+  size_t used_in_bytes()            { return _space->used_stable(); }
 };
 #endif // INCLUDE_ALL_GCS