Changeset 72579 in vbox for trunk/src/VBox/VMM/VMMR3

Timestamp:

Jun 16, 2018 2:32:26 PM (7 years ago)

Author:

vboxsync

Message:

EM: Implemented a very simple history record replacement strategy. bugref:9044

File:

• trunk/src/VBox/VMM/VMMR3/EM.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMR3/EM.cpp

@@ -451 +451 @@
 
         rc = STAMR3RegisterF(pVM, &pVCpu->em.s.iNextExit, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES,
-                             "Number of recorded exits (R0/RC).", "/PROF/CPU%u/EM/RecordedExits", i);
+                             "Number of recorded exits.", "/PROF/CPU%u/EM/RecordedExits", i);
         AssertRC(rc);
 
+        /* History record statistics */
+        rc = STAMR3RegisterF(pVM, &pVCpu->em.s.cExitRecordUsed, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES,
+                             "Number of used hash table entries.", "/EM/CPU%u/ExitHashing/Used", i);
+        AssertRC(rc);
+
+        for (uint32_t iStep = 0; iStep < RT_ELEMENTS(pVCpu->em.s.aStatHistoryRecHits); iStep++)
+        {
+            rc = STAMR3RegisterF(pVM, &pVCpu->em.s.aStatHistoryRecHits[iStep], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
+                                 "Number of hits at this step.",             "/EM/CPU%u/ExitHashing/Step%02u-Hits", i, iStep);
+            AssertRC(rc);
+            rc = STAMR3RegisterF(pVM, &pVCpu->em.s.aStatHistoryRecTypeChanged[iStep], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
+                                 "Number of type changes at this step.",     "/EM/CPU%u/ExitHashing/Step%02u-TypeChanges", i, iStep);
+            AssertRC(rc);
+            rc = STAMR3RegisterF(pVM, &pVCpu->em.s.aStatHistoryRecTypeChanged[iStep], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
+                                 "Number of replacments at this step.",     "/EM/CPU%u/ExitHashing/Step%02u-Replacments", i, iStep);
+            AssertRC(rc);
+            rc = STAMR3RegisterF(pVM, &pVCpu->em.s.aStatHistoryRecNew[iStep], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
+                                 "Number of new inserts at this step.",     "/EM/CPU%u/ExitHashing/Step%02u-NewInserts", i, iStep);
+            AssertRC(rc);
+        }
     }