Red Hat Bugzilla – Bug 612782
While creating new Fe-13 i386 VM application kvm-qemu consumes 130% of cpu
Last modified: 2011-06-29 09:47:17 EDT
Description of problem: Since the release of Fe-13 I have been unable to complete a build of a Fe-13 guest VM from a iso DVD on the local host. I can complete up to certain steps in the build process including one install attempt where I completed 1056 of 1064 package installs before VM locked up.
Version-Release number of selected component (if applicable):
qemu-kvm.x86_64 2:0.12.3-8.fc13 @anaconda-InstallationRepo-201005130101.x86_64
etherboot-roms-kvm.noarch 5.4.4-18.fc13 fedora
etherboot-zroms-kvm.noarch 5.4.4-18.fc13 fedora
qemu-kvm-tools.x86_64 2:0.12.3-8.fc13 fedora
How reproducible:Over 20 VM create attempts have failed
Steps to Reproduce:
1.Boot from DVD image
Additional info: Using Top to monitor CPU, the usage typically runs between 30 and 50% but when it spikes past 100% the install process never returns.
Even when not spiking to 100%, I believe that KVM is consuming too much cpu time. I have not experienced any lockups of this nature on existing guests but there are times when a long delay in response to mouse or key strokes occurs.
Please provide the full KVM command line and/or libvirt XML for the guest that hangs.
XML for VM. virt-manager command line below this.
[root@BRSINC-01 qemu]# cat Fedora-Home.xml
<type arch='x86_64' machine='fedora-13'>hvm</type>
<feature policy='force' name='x2apic'/>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
<disk type='block' device='cdrom'>
<target dev='hdc' bus='ide'/>
<address type='drive' controller='0' bus='1' unit='0'/>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
<input type='tablet' bus='usb'/>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' keymap='en-us'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
<model type='cirrus' vram='9216' heads='1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-kvm -S -M fedora-13 -cpu qemu64,+x2apic -enable-kvm -m 768 -smp 2,sockets=2,cores=1,threads=1 -name Fedora-Home -uuid a5a65acd-e053-a08f-0df1-892d21907c89 -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/Fedora-Home.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=utc -no-reboot -boot d -drive file=/var/lib/libvirt/images/Fedora-Home.img,if=none,id=drive-virtio-disk0,format=raw -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0 -drive file=/home/EB30750/Downloads/Fedora-13-i386-DVD.iso,if=none,media=cdrom,id=drive-ide0-1-0 -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -device virtio-net-pci,vlan=0,id=net0,mac=52:54:00:2e:5b:87,bus=pci.0,addr=0x5 -net tap,fd=54,vlan=0,name=hostnet0 -chardev pty,id=serial0 -device isa-serial,chardev=serial0 -usb -device usb-tablet,id=input0 -vnc 127.0.0.1:0 -k en-us -vga cirrus -device AC97,id=sound0,bus=pci.0,addr=0x6 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
char device redirected to /dev/pts/0
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