On Thu, 15 Jan 2009 11:05:01 -0800, MLyons10
>It's a shame that sound remains an issue. Sound just doesn't seem to be very
>CPU when running an OS outside of Virtual PC, so I don't know why it would be
>so poor within Virtual PC. I have already upped the CPU for the XP guest to
>1 GB, but when I get home I'll crank it up to the max (Whatever that may be)
>and see. When I run Task Manager it doesn't use much of XP's CPU, and on the
>Host it also is not very demanding of the CPU. Which begs the question "What
>does exactly cause this sound issue?" Is it the Virtual PC's interface
>between the guest OS and the audio card? Virtual PC does have some
>limitations as it relates to its ability to interact with certain things on
>the Host Machine, such as printers and such. Is the Audio Card another one
>of these limitations? It seems like something that should be supported...
Sound isn't an issue on the host, because the host has a sound card.
In a VM, the sound card is emulated via the CPU. Anytime the CPU gets
called for other processes/tasks, it will affect the sound, the slower
and older the CPU the more pronounced.
I rarely have this problem on my quadcores, or high-MHz dual-cores.
All VM software has limitations on how it connects to the host
hardware. The only thing that is directly accessible is the CPU, all
the other "hardware" in a VM is emulated, be it VPC, VMW Workstation,
Steve Jain, Virtual Machine MVP