[Bug 716528] Re: kvm 100% when performing apparently IO operations
Hi Andres, Are you still seeing this problem? -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in Ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
Hi Serge. No I'm not. In fact I thought this was already marked as invalid or something :). Cheers, -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in Ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
** Changed in: qemu-kvm (Ubuntu) Status: Confirmed = Fix Released -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in Ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
Well golly gee willikers, I think I now have the same problem. ** Changed in: qemu-kvm (Ubuntu) Status: Incomplete = Confirmed -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
I can reproduce this using kvm from the command line, so libvirt appears unrelated: kvm -hda lucid.img -m 512M -smp 2 -vnc :1 -redir tcp:::22 -cdrom lucid-server-amd64.iso The simplest 'bzr branch grub grub-b' pins my cpu. ** Changed in: libvirt (Ubuntu) Status: New = Invalid -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
And yet when booted from cdrom, cpu utilization stays around 10%. ** Changed in: libvirt (Ubuntu) Importance: Undecided = Medium -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
@Andres, qemu-kvm has been updated to 0.14.0~rc1. Could you let us know if the issue persists? ** Changed in: qemu-kvm (Ubuntu) Importance: Undecided = Medium ** Changed in: qemu-kvm (Ubuntu) Status: New = Incomplete -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
Hi Serge, I haven't experienced the same behavior as before 100% CPU with latest qemu-kvm. However, during installation of a natty VM, while doing IO, the CPU load is still a bit high sometimes ~70-80%. But, overall I can't seem to reproduce this problem. The kvm command used by libvirt now is: /usr/bin/kvm -S -M pc-0.14 -enable-kvm -m 512 -smp 2,sockets=2,cores=1,threads=1 -name natty3 -uuid a1fc02e8-0002-f0fd-f292-a0afa52500b3 -nodefconfig -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/natty3.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=utc -no-reboot -boot dc -drive file=/var/lib/libvirt/images/natty3.img,if=none,id=drive-virtio- disk0,boot=on,format=raw -device virtio-blk-pci,bus=pci.0,addr=0x5,drive =drive-virtio-disk0,id=virtio-disk0 -drive file=/home/roaksoax/Desktop /ubuntu_natty-server-i386.iso,if=none,media=cdrom,id=drive- ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive =drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=43,id=hostnet0 -device virtio-net- pci,netdev=hostnet0,id=net0,mac=52:54:00:38:54:4d,bus=pci.0,addr=0x3 -chardev pty,id=serial0 -device isa-serial,chardev=serial0 -usb -vnc 127.0.0.1:1 -vga cirrus -device AC97,id=sound0,bus=pci.0,addr=0x4 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
All right, so this comes down to an incompatibility between maverick's versions of libvirt and qemu - libvirt is using QED, but qemu-kvm doesn't yet know about it. The '-drive file=X,if=none device=...' format, in particular, is QED. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
Could you try running the following command: kvm -m 512 -smp 2 -cdrom /home/roaksoax/.cache/testdrive/iso /ubuntu_natty-server-i386.iso -drive file=/home/roaksoax/.cache/testdrive/img/testdrive-disk- J_PcC_.img,if=virtio,cache=writeback,index=0,boot=on -usb -usbdevice tablet -net nic,model=virtio -net user -soundhw es1370 -vga cirrus and report how it behaves? -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
From an overall CPU load of 20%, after launching and leaving the VM not doing anything (In the menu requesting keyboard language for the installation) it goes up all the way to ~60%, and during installation it goes till ~70%of CPU load. This results are about the same as when launching with the command using when launching with testdrive (it appears to be a little less with testdrive command.)! -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
I'm sorry, something went wrong in my editing the previous post. The command I had wanted you to try was: kvm -m 512 -smp 2 -cdrom /home/roaksoax/.cache/testdrive/iso /ubuntu_natty-server-i386.iso -drive file=/var/lib/libvirt/images/natty1.img,if=virtio,cache=writeback,index=0,boot=on -usb -usbdevice tablet -net nic,model=virtio -net user -soundhw es1370 -vga cirrus -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
** Attachment added: natty1.xml https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/716528/+attachment/1841701/+files/natty1.xml ** Description changed: Binary package hint: qemu-kvm I created a VM using virt-manager. During the installation, the process kvm has a CPU usage goes of 100%. Being aware of the virt-manager [1], bug #707313, (using 100% CPU), I used top to determine weather this was virt-manager of kvm itself. After doing so, I noticed that both, kvm and python processes where more than 80% of usage. So I decided to go ahead and close virt-manager and the VNC window for the current VM. Then, I returned to a terminal to see top's output, and it showed now that the kvm process was the only one with 100% CPU usage. + Note that the CPU usage is only at 100% when doing IO, apparently. + A video showing this behavior can be found at [2]. [1]: https://bugs.launchpad.net/ubuntu/+source/virt-manager/+bug/707313 [2]: me.roaksoax.com/kvm.ogv -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
** Description changed: Binary package hint: qemu-kvm + + Version: Natty + Kernel Version: 2.6.38-2-generic x86_64 + KVM Version: QEMU emulator version 0.13.0 (qemu-kvm-devel) + LibVirt Version: libvirtd (libvirt) 0.8.5 I created a VM using virt-manager. During the installation, the process kvm has a CPU usage goes of 100%. Being aware of the virt-manager [1], bug #707313, (using 100% CPU), I used top to determine weather this was virt-manager of kvm itself. After doing so, I noticed that both, kvm and python processes where more than 80% of usage. So I decided to go ahead and close virt-manager and the VNC window for the current VM. Then, I returned to a terminal to see top's output, and it showed now that the kvm process was the only one with 100% CPU usage. Note that the CPU usage is only at 100% when doing IO, apparently. A video showing this behavior can be found at [2]. [1]: https://bugs.launchpad.net/ubuntu/+source/virt-manager/+bug/707313 [2]: me.roaksoax.com/kvm.ogv -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
** Attachment added: natty1 https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/716528/+attachment/1841716/+files/natty1 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
** Attachment added: vol-dumpxml https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/716528/+attachment/1841717/+files/vol-dumpxml -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
** Attachment added: pool-dumpxml https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/716528/+attachment/1841718/+files/pool-dumpxml ** Also affects: libvirt (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
libvirt kvm command: /usr/bin/kvm -S -M pc-0.13 -enable-kvm -m 512 -smp 2,sockets=2,cores=1,threads=1 -name natty1 -uuid 31631c3c-a914-6365-12b7-9103b4e07a3b -nodefconfig -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/natty1.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=utc -no-reboot -boot dc -drive file=/var/lib/libvirt/images/natty1.img,if=none,id=drive-virtio-disk0,boot=on,format=raw -device virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0 -drive file=/home/roaksoax/Desktop/ubuntu_natty-server-i386.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=43,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:a7:2d:6c,bus=pci.0,addr=0x3 -chardev pty,id=serial0 -device isa-serial,chardev=serial0 -usb -vnc 127.0.0.1:0 -vga cirrus -device AC97,id=sound0,bus=pci.0,addr=0x4 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
testdrive kvm command: kvm -m 512 -smp 2 -cdrom /home/roaksoax/.cache/testdrive/iso /ubuntu_natty-server-i386.iso -drive file=/home/roaksoax/.cache/testdrive/img/testdrive-disk- J_PcC_.img,if=virtio,cache=writeback,index=0,boot=on -usb -usbdevice tablet -net nic,model=virtio -net user -soundhw es1370 -vga cirrus ** Description changed: Binary package hint: qemu-kvm Version: Natty Kernel Version: 2.6.38-2-generic x86_64 KVM Version: QEMU emulator version 0.13.0 (qemu-kvm-devel) LibVirt Version: libvirtd (libvirt) 0.8.5 I created a VM using virt-manager. During the installation, the process kvm has a CPU usage goes of 100%. Being aware of the virt-manager [1], bug #707313, (using 100% CPU), I used top to determine weather this was virt-manager of kvm itself. After doing so, I noticed that both, kvm and python processes where more than 80% of usage. So I decided to go ahead and close virt-manager and the VNC window for the current VM. Then, I returned to a terminal to see top's output, and it showed now that the kvm process was the only one with 100% CPU usage. - Note that the CPU usage is only at 100% when doing IO, apparently. + Note that the CPU usage is only at 100% when doing intensive IO, + apparently. A video showing this behavior can be found at [2]. [1]: https://bugs.launchpad.net/ubuntu/+source/virt-manager/+bug/707313 [2]: me.roaksoax.com/kvm.ogv -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
Thanks Andres, the .xml looks fine, but the command spawned by libvirt certainly does not. In particular, the drive definition for natty.img looks bogus, with its 'if=none'. If you close virt-manager and start the vm with 'virsh start natty1', do you get the same command? -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 716528] Re: kvm 100% when performing apparently IO operations
Yes is the same command. When I installed the VM i chosed the Ubuntu Natty profile (I though this default to VirtIO?). Maybe this is the reason! -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu-kvm in ubuntu. https://bugs.launchpad.net/bugs/716528 Title: kvm 100% when performing apparently IO operations -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
