Changeset 34931 in vbox

Timestamp:

Dec 10, 2010 12:28:50 AM (14 years ago)

Author:

vboxsync

Message:

BlkCache: Optimization, don't enable the cache for DVD drives because it caches writes only and thus just increases the overhead for DVD drives

File:

• trunk/src/VBox/Main/ConsoleImpl2.cpp (modified) (1 diff)

trunk/src/VBox/Main/ConsoleImpl2.cpp

@@ -3144 +3144 @@
                 {
                     InsertConfigInteger(pCfg, "UseNewIo", 1);
-                    if (fBuiltinIoCache)
+                    /*
+                     * Activate the builtin I/O cache for harddisks only.
+                     * It caches writes only which doesn't make sense for DVD drives
+                     * and just increases the overhead.
+                     */
+                    if (   fBuiltinIoCache
+                        && (enmType == DeviceType_HardDisk))
                         InsertConfigInteger(pCfg, "BlockCache", 1);
                 }