--- jdk9u-jdk-9.0.4+12/hotspot/src/share/vm/runtime/globals.hpp~	2018-01-22 16:19:02.000000000 +0100
+++ jdk9u-jdk-9.0.4+12/hotspot/src/share/vm/runtime/globals.hpp	2021-11-25 11:20:23.436642199 +0100
@@ -577,7 +577,7 @@ public:
           range(8, 256)                                                     \
           constraint(ObjectAlignmentInBytesConstraintFunc,AtParse)          \
                                                                             \
-  product(bool, AssumeMP, false,                                            \
+  product(bool, AssumeMP, true,                                             \
           "Instruct the VM to assume multiple processors are available")    \
                                                                             \
   /* UseMembar is theoretically a temp flag used for memory barrier      */ \