src/hotspot/share/runtime/objectMonitor.cpp

rev 51780 : imported patch syncknobs-00-base
rev 51781 : imported patch syncknobs-01-Knob_ReportSettings
rev 51782 : imported patch syncknobs-02-Knob_SpinBackOff
rev 51783 : imported patch syncknobs-03-BackOffMask
rev 51784 : imported patch syncknobs-04-Knob_ExitRelease
rev 51785 : imported patch syncknobs-05-Knob_InlineNotify
rev 51786 : imported patch syncknobs-06-Knob_Verbose
rev 51787 : imported patch syncknobs-07-Knob_VerifyInUse
rev 51788 : imported patch syncknobs-08-Knob_VerifyMatch
rev 51789 : imported patch syncknobs-09-Knob_SpinBase
rev 51790 : imported patch syncknobs-10-Knob_CASPenalty
rev 51791 : imported patch syncknobs-11-Knob_OXPenalty
rev 51792 : imported patch syncknobs-12-Knob_SpinSetSucc
rev 51793 : imported patch syncknobs-13-Knob_SpinEarly
rev 51794 : imported patch syncknobs-14-Knob_SuccEnabled
rev 51795 : imported patch syncknobs-15-Knob_SuccRestrict
rev 51796 : imported patch syncknobs-16-Knob_MaxSpinners
rev 51797 : imported patch syncknobs-17-Knob_SpinAfterFutile
rev 51798 : imported patch syncknobs-18-Knob_OState
rev 51799 : imported patch syncknobs-19-Knob_UsePause

@@ -106,11 +106,10 @@
 static int Knob_Bonus               = 100;     // spin success bonus
 static int Knob_BonusB              = 100;     // spin success bonus
 static int Knob_Penalty             = 200;     // spin failure penalty
 static int Knob_Poverty             = 1000;
 static int Knob_FixedSpin           = 0;
-static int Knob_UsePause            = 1;
 static int Knob_ExitPolicy          = 0;
 static int Knob_PreSpin             = 10;      // 20-100 likely better
 static int Knob_ResetEvent          = 0;
 
 static int Knob_FastHSSEC           = 0;

@@ -1861,15 +1860,13 @@
     // We periodically check to see if there's a safepoint pending.
     if ((ctr & 0xFF) == 0) {
       if (SafepointMechanism::poll(Self)) {
         goto Abort;           // abrupt spin egress
       }
-      if (Knob_UsePause & 1) SpinPause();
+      SpinPause();
     }
 
-    if (Knob_UsePause & 2) SpinPause();
-
     // Probe _owner with TATAS
     // If this thread observes the monitor transition or flicker
     // from locked to unlocked to locked, then the odds that this
     // thread will acquire the lock in this spin attempt go down
     // considerably.  The same argument applies if the CAS fails