Reduce the number of sched_yield(2) before sleeping 1ms to work-around an
issue on sparc64

Index: hotspot/src/share/vm/runtime/globals.hpp
--- hotspot/src/share/vm/runtime/globals.hpp.orig
+++ hotspot/src/share/vm/runtime/globals.hpp
@@ -2033,7 +2033,7 @@ class CommandLineFlags {
   experimental(uintx, WorkStealingSleepMillis, 1,                           \
           "Sleep time when sleep is used for yields")                       \
                                                                             \
-  experimental(uintx, WorkStealingYieldsBeforeSleep, 5000,                  \
+  experimental(uintx, WorkStealingYieldsBeforeSleep, 10,                    \
           "Number of yields before a sleep is done during workstealing")    \
                                                                             \
   experimental(uintx, WorkStealingHardSpins, 4096,                          \
