On 06/25/2009 03:55 PM, Don Dutile wrote:
Dennis J. wrote:
Hi, When I run a centos 5.3 x86_64 guest on my F11 x86_64 system with kvm I see the qemu-kvm process cpu usage jump to ~20% every few seconds even though the guest is completely idle (I even disabled the HAL polling for /dev/hdc). Does anyone have an idea what could be the cause of this or how find the reason for this behavior?
Regards, Dennis
Fedora-virt mailing list Fedora-virt@redhat.com https://www.redhat.com/mailman/listinfo/fedora-virt
Try turning off the network (ifcfg eth0 down) in the guest& see if the cpu usage goes away. if so, it's probably network polling mis-behaving. if not, then send details (kernel revs; #pcpu's, #vcpu's in guest, etc.
I shut down the interface using "ifdown eth0" but that didn't change anything. I filed a bug here: https://bugzilla.redhat.com/show_bug.cgi?id=508109
It contains additional information about the environment and an attached screenshot showing the peaks in virtual-machine-manager in more detail.
Regards, Dennis