Re: VMware and ACPI

On Monday 15 September 2003 23:51, Jan Rychter wrote:

Hmm... just wondering: what happened to the VMware/ACPI interaction
issues that some people were reporting here?

There were some discussions and it seemed that ACPI idling the processor
while VMware really wanted to use it was the cuplrit. Any resulting
changes?

I'm running 2.4.22-pre10 now and my WindowsXP inside VMware runs
horribly slow. It gets considerably better if I leave an USB device
plugged in (which causes ACPI to use C2 only and never go into C3), but
it still isn't full speed.

Yes, there is still a problem. I use the appending patch since ages. Before
starting VMware, I do

  echo -n "0" > /proc/acpi/processor/CPU/power

and after VMware has terminated I do

  echo -n "1" > /proc/acpi/processor/CPU/power

This prevents ACPI from going into C2 while VMware is active. This solves
at least my problems (slow, bad response) with Windows NT on VMware. I'm
using Linux-2.4.22.

Frank
-- 
## Dept. of Computer Science, Dresden University of Technology, Germany ##
## http://os.inf.tu-dresden.de/~fm3                                     ##