[wdmaudiodev] Re: Audio stack in 32-bit Vista VM guest is MUCH slower than in 64-bit Vista guest

  • From: Tim Roberts <timr@xxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Tue, 05 Aug 2008 09:40:40 -0700

Eugene Muzychenko wrote:
To debug my kernel-mode code, I use several VMs under VMware
Workstation (now 6.0.4 but no difference since 5.5) - Windows 2000, XP
(32 and 64-bit), 2003 (32-bit), Vista (32 and 64-bit). I noticed that
32-bit Vista guest works MUCH slower than all other OSes, regardless
of their bitness. All other OSes, including 64-bit Vista, have good
performance; 64-bit Vista is slower, of course, but 32-bit Vista is
VERY slow.

Based on my experience, your last sentence is true even if you aren't using VMs.

However, I can also tell you that SP1 improves things considerably. After installing SP1, I no longer dread having to test my drivers on Vista. It's almost usable. If you haven't done so already, I strongly recommend you install SP1 on these systems.

Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.


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