Changeset 33172 in vbox for trunk/src/VBox/VMM

Timestamp:

Oct 15, 2010 11:33:49 PM (15 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

66708

Message:

VMEmt,GVMM: Some more tuning...

Location:

trunk/src/VBox/VMM

Files:

• VMEmt.cpp (modified) (4 diffs)
• VMMR0/GVMMR0.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMEmt.cpp

@@ -327 +327 @@
         TMR3TimerQueuesDo(pVM);
         uint64_t const cNsElapsedTimers = RTTimeNanoTS() - u64StartTimers;
-        STAM_REL_PROFILE_ADD_PERIOD(&pUVCpu->vm.s.StatHaltYield, cNsElapsedTimers);
+        STAM_REL_PROFILE_ADD_PERIOD(&pUVCpu->vm.s.StatHaltTimers, cNsElapsedTimers);
         if (    VM_FF_ISPENDING(pVM, VM_FF_EXTERNAL_HALTED_MASK)
             ||  VMCPU_FF_ISPENDING(pVCpu, fMask))
@@ -526 +526 @@
         TMR3TimerQueuesDo(pVM);
         uint64_t const cNsElapsedTimers = RTTimeNanoTS() - u64StartTimers;
-        STAM_REL_PROFILE_ADD_PERIOD(&pUVCpu->vm.s.StatHaltYield, cNsElapsedTimers);
+        STAM_REL_PROFILE_ADD_PERIOD(&pUVCpu->vm.s.StatHaltTimers, cNsElapsedTimers);
         if (    VM_FF_ISPENDING(pVM, VM_FF_EXTERNAL_HALTED_MASK)
             ||  VMCPU_FF_ISPENDING(pVCpu, fMask))
@@ -620 +620 @@
      * The defaults.
      */
-    pUVM->vm.s.Halt.Global1.cNsSpinBlockThresholdCfg = 50000;
     uint32_t cNsResolution = SUPSemEventMultiGetResolution(pUVM->vm.s.pSession);
-    if (cNsResolution < 5*RT_NS_100US)
-    {
-        cNsResolution = RT_MAX(cNsResolution, 20000);
-        pUVM->vm.s.Halt.Global1.cNsSpinBlockThresholdCfg = cNsResolution / 2;
-    }
+    if (cNsResolution > 5*RT_NS_100US)
+        pUVM->vm.s.Halt.Global1.cNsSpinBlockThresholdCfg = 50000;
+    else if (cNsResolution > RT_NS_100US)
+        pUVM->vm.s.Halt.Global1.cNsSpinBlockThresholdCfg = cNsResolution / 4;
+    else
+        pUVM->vm.s.Halt.Global1.cNsSpinBlockThresholdCfg = 2000;
 
     /*
@@ -674 +674 @@
         TMR3TimerQueuesDo(pVM);
         uint64_t const cNsElapsedTimers = RTTimeNanoTS() - u64StartTimers;
-        STAM_REL_PROFILE_ADD_PERIOD(&pUVCpu->vm.s.StatHaltYield, cNsElapsedTimers);
+        STAM_REL_PROFILE_ADD_PERIOD(&pUVCpu->vm.s.StatHaltTimers, cNsElapsedTimers);
         if (    VM_FF_ISPENDING(pVM, VM_FF_EXTERNAL_HALTED_MASK)
             ||  VMCPU_FF_ISPENDING(pVCpu, fMask))

trunk/src/VBox/VMM/VMMR0/GVMMR0.cpp

@@ -362 +362 @@
                 pGVMM->nsEarlyWakeUp2    =  50000 /* ns (0.050 ms) */;
             }
+            else if (cNsResolution > RT_NS_100US)
+            {
+                pGVMM->nsMinSleepAlone   = cNsResolution / 2;
+                pGVMM->nsMinSleepCompany = cNsResolution / 4;
+                pGVMM->nsEarlyWakeUp1    = 0;
+                pGVMM->nsEarlyWakeUp2    = 0;
+            }
             else
             {
-                cNsResolution = RT_MIN(cNsResolution, 10000);
-                pGVMM->nsMinSleepAlone   = cNsResolution - cNsResolution / 3;
-                pGVMM->nsMinSleepCompany = cNsResolution - cNsResolution / 3;
+                pGVMM->nsMinSleepAlone   = 2000;
+                pGVMM->nsMinSleepCompany = 2000;
                 pGVMM->nsEarlyWakeUp1    = 0;
                 pGVMM->nsEarlyWakeUp2    = 0;