Changeset 9960 in vbox for trunk/src/VBox/HostDrivers

Timestamp:

Jun 26, 2008 2:39:38 PM (16 years ago)

Author:

vboxsync

Message:

Don't bother changing the timer granularity for now.

File:

• trunk/src/VBox/HostDrivers/Support/SUPDRVShared.c (modified) (2 diffs)

trunk/src/VBox/HostDrivers/Support/SUPDRVShared.c

@@ -3731 +3731 @@
     HCPhysGip = RTR0MemObjGetPagePhysAddr(pDevExt->GipMemObj, 0); Assert(HCPhysGip != NIL_RTHCPHYS);
 
+#if 0 /** @todo Disabled this as we didn't used to do it before and causes unnecessary stress on laptops. 
+       * It only applies to Windows and should probably revisited later, if possible made part of the
+       * timer code (return min granularity in RTTimerGetSystemGranularity and set it in RTTimerStart). */
     /*
      * Try bump up the system timer resolution.
      * The more interrupts the better...
      */
-    if (   RT_SUCCESS(RTTimerRequestSystemGranularity(  976563 /* 1024 HZ */, &u32SystemResolution))
+    if (   RT_SUCCESS(RTTimerRequestSystemGranularity(  488281 /* 2048 HZ */, &u32SystemResolution))
+        || RT_SUCCESS(RTTimerRequestSystemGranularity(  500000 /* 2000 HZ */, &u32SystemResolution))
+        || RT_SUCCESS(RTTimerRequestSystemGranularity(  976563 /* 1024 HZ */, &u32SystemResolution))
         || RT_SUCCESS(RTTimerRequestSystemGranularity( 1000000 /* 1000 HZ */, &u32SystemResolution))
+        || RT_SUCCESS(RTTimerRequestSystemGranularity( 1953125 /*  512 HZ */, &u32SystemResolution))
+        || RT_SUCCESS(RTTimerRequestSystemGranularity( 2000000 /*  500 HZ */, &u32SystemResolution))
         || RT_SUCCESS(RTTimerRequestSystemGranularity( 3906250 /*  256 HZ */, &u32SystemResolution))
         || RT_SUCCESS(RTTimerRequestSystemGranularity( 4000000 /*  250 HZ */, &u32SystemResolution))
@@ -3748 +3755 @@
         pDevExt->u32SystemTimerGranularityGrant = u32SystemResolution;
     }
+#endif
 
     /*