[SOLVED] XP guest suddenly runs very slowly on KVM

PTrenholme · 09-05-2011, 12:27 PM

Quote:

Originally Posted by kheldar

I've upped the memory to 2gb, all of which appears to be used by "top".

There is a massive discrepancy between the cpu usage on the guest and the host. Top reports the host hardly doing anything, while task manager reports the cpu being flat out.

That's strange, although, IIRC, the Windows "Task Manager" counts idle time and IO wait time as process time, while Top parses those out.

Again, IIRC - and it's been several years ago now, XP could slow down to a snail's pace while it waited for an I/O request to be serviced. Since you're running as a virtual system, you might find the virsh command helpful for getting additional information from your XP system.

By the way, Fedora 14 is fairly close to it's "end of support" time, which should be about a month after Fedora 16 is released. (Currently scheduled for 1 Nov 2011.)

jefro · 09-05-2011, 03:17 PM

"Top reports the host hardly doing anything, while task manager reports the cpu being flat out."

Top is reporting the host cpus. Is one of them at or near 100%?

kheldar · 02-26-2013, 08:56 AM

Just to update this thread - the I ended up fixing the problem by downloading the windows virtio paravirtualisation drivers, and then changing the network and disk to use the virtio components.

Went from performing like a dog to pretty much perfect operation in an instant!