Changeset 499 in vbox for trunk/src/VBox

Timestamp:

Feb 1, 2007 10:20:43 AM (18 years ago)

Author:

vboxsync

Message:

Queue depth of 8 is too much. 4 yields better results.

File:

• trunk/src/VBox/Devices/Network/DevPCNet.cpp (modified) (4 diffs)

trunk/src/VBox/Devices/Network/DevPCNet.cpp

@@ -109 +109 @@
 #define PCNET_PNPMMIO_SIZE              0x20
 
-#define PCNET_SAVEDSTATE_VERSION        4
+#define PCNET_SAVEDSTATE_VERSION        5
 
 #define BCR_MAX_RAP                     50
 #define MII_MAX_REG                     32
 #define CSR_MAX_REG                     128
+
+#define PCNET_TRQUEUE_DEPTH             4
 
 typedef struct PCNetState_st PCNetState;
@@ -155 +157 @@
          *  Set to NIL_RTR3PTR if frame was copied to abFrameBuf. */
         RTR3PTR  pvR3;
-    } aFrames[8];
+    } aFrames[PCNET_TRQUEUE_DEPTH];
     /** The current number of frames in aFrames to transmit. */
     uint32_t                            iFrame;
@@ -252 +254 @@
     STAMPROFILE                         StatXmitQueue;
     STAMPROFILEADV                      StatXmitQueueFlushGC;
-    STAMCOUNTER                         aStatFlushCounts[9];
-    STAMCOUNTER                         aStatXmitChainCounts[8];
+    STAMCOUNTER                         aStatFlushCounts[PCNET_TRQUEUE_DEPTH+1];
+    STAMCOUNTER                         aStatXmitChainCounts[PCNET_TRQUEUE_DEPTH];
     STAMPROFILEADV                      StatInterrupt;
     STAMPROFILEADV                      StatPollTimer;
@@ -3864 +3866 @@
     Assert(RT_ELEMENTS(pData->aMII) == MII_MAX_REG);
     Assert(sizeof(pData->abFrameBuf) == RT_ALIGN_Z(sizeof(pData->abFrameBuf), 16));
+    Assert(PCNET_TRQUEUE_DEPTH*1536 <= sizeof(pData->abFrameBuf));
 
     /*