Index: /trunk/src/VBox/Devices/Audio/HDAStream.cpp
===================================================================
--- /trunk/src/VBox/Devices/Audio/HDAStream.cpp	(revision 73522)
+++ /trunk/src/VBox/Devices/Audio/HDAStream.cpp	(revision 73523)
@@ -1326,4 +1326,6 @@
             const uint32_t cbSinkWritable = AudioMixerSinkGetWritable(pSink);
 
+            Log3Func(("[SD%RU8] cbWritable=%RU32, cbUsed=%RU32\n", pStream->u8SD, cbSinkWritable, cbUsed));
+
             /* Do not write more than the sink can hold at the moment.
              * The host sets the overall pace. */