Re: XP smp using a lot of CPU [SOLVED]

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On May 15, 2009, at 3:24 PM, Ross Boylan wrote:

Using ACPI fixes the problem; CPU useage is now quite low.  Start line
was
sudo vdeq kvm -net nic,vlan=1,macaddr=52:54:a0:12:01:00 \
   -net vde,vlan=1,sock=/var/run/vde2/tap0.ctl \
   -boot d -cdrom /usr/local/backup/XPProSP3.iso \
   -std-vga -hda /dev/turtle/XP00 \
   -soundhw es1370 -localtime -m 1G -smp 2
I switched to -boot c later.

I ended up doing a fresh install; my repair got mucked up and I got the message "The requested lookup key was not found in any active activation context" when I entered a location into MSIE, including when I tried to run Windows Update. Googling showed this might indicate some permission
or file corruption issues.  They may have happened during my earlier
(virtual) system hang.

My experience suggests a theory: if you use SMP with XP (i.e., more than 1 virtual processor) you should enable acpi, i.e., not say -no- acpi. It this is true, the advice to run windows with -no-acpi should probably be
updated.  It's possible single CPU systems are affected as well.


I removed the note about -no-acpi from the howto on the wiki. I don't think that's been true for a long time.

--Iggy




Ross


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