Avi Kivity wrote:
On 10/28/2009 11:16 PM, Erik Rull wrote:
Hi all,
after several tests it seems that the interrupt assignment on the host
systems influences the kvm performance drastically. If eth0, video and
usb
are on seperate interrupts the perfomance is way better than if they are
shared (that means on the same one).
Normally this should not matter. But why is it within kvm? Does kvm
somehow
hook up into the interrupt service routines?
No.
My guest is Windows XP SP3.
Can you describe how performance suffers?
Please provide vmstat (for host int/sec) and "kvm_stat -l -f
'exits|irq_exits'" output.
I'm sorry, but my target system has no python installed. Any ideas how to
do that manually?
- Erik
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