[Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram
Same for me here, Ubuntu wily. I'm using vagrant-libvirt, and my hosts also very often run wild with 100% cpu usage after suspend. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1174654 Title: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions -- 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 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram
I am running Ubuntu Wily (the 20150717 daily build) can reproduce this problem, whatever the guest is Linux or Windows, after host got resumed from suspend, the kvm (qemu-system-x86_64) process becomes a 100% cpu usage, user@ubuntu-mate:~$ kvm --version QEMU emulator version 2.3.0 (Debian 1:2.3+dfsg-5ubuntu2), Copyright (c) 2003-2008 Fabrice Bellard I wonder can the kvm program be fixed? -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1174654 Title: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions -- 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 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram
Thanks for posting your script Tobias, I'm having the same problem on Fedora 20 and the script alleviates the symptom. Matt -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1174654 Title: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions -- 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 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram
Did some testing: if one pauses the vms that run windows before suspending
ubuntu no high cpu usage is there once the host and windows vms are resumed.
for me it's workable then in ubuntu by using a suspend / resume script with
power manaager. I put this in /etc/pm/sleep.d (and make it executable) :
#!/bin/bash
PS_VM=/var/run/paused_vms
is_there_virsh () {
if [[ -z `which virsh` ]]
then echo no actions for suspend or resume required
exit 0
fi
}
case $1 in
suspend)
is_there_virsh
echo /var/run/paused_vms
for i in $(virsh list --state-running | grep running | awk {'print $2'})
do echo $i /var/run/paused_vms
virsh suspend $i
done
;;
resume)
is_there_virsh
for i in $(cat $PS_VM)
do virsh resume $i
done
# optionally remove the file but this seems not required?
rm $PS_VM
;;
*)
;;
esac
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https://bugs.launchpad.net/bugs/1174654
Title:
qemu-system-x86_64 takes 100% CPU after host machine resumed from
suspend to ram
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Re: [Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram
Hello Mike, Thanks a lot for getting back on this. Is the cpu idle driver a command line option I need to specify for qemu (the -cpu option ?) I could not find a reference to idle in the man page. regards, Tobias. On 18-10-13 04:33, mike wrote: On 10/18/2013 04:29 AM, tobias wrote: hi, tried your option but it does not help. (cpu usage is still high) below my command line syntax: qemu-system-x86_64 -global mc146818rtc.lost_tick_policy=slew -machine accel=kvm:tcg -name win7 -S -machine pc-i440fx-1.4,accel=kvm,usb=off -m 2048 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 813f5806-64ec-3319-452a-5e1834e753c9 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/win7.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime -no-shutdown -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x5.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x5 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x5.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x5.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x8 -drive file=/data/vmware/win7.img,if=none,id=drive-virtio-disk0,format=qcow2 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -device usb-tablet,id=input0 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -vga std Hi, have you enable the kernel CPU idle driver? especially the guest kernel. Thanks Mike -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1174654 Title: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions -- 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
Re: [Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram
Hello MIke, but this concerns a windows guest. you mean a kernel configuration within the guest (aka recompile ?) or a boot parameter within the guest ? regards, Tobias. On 18-10-13 09:26, mike wrote: On 10/18/2013 03:12 PM, tobias wrote: Hello Mike, Thanks a lot for getting back on this. Is the cpu idle driver a command line option I need to specify for qemu (the -cpu option ?) I could not find a reference to idle in the man page. You need to check the guest kernel config file. Thanks Mike regards, Tobias. On 18-10-13 04:33, mike wrote: On 10/18/2013 04:29 AM, tobias wrote: hi, tried your option but it does not help. (cpu usage is still high) below my command line syntax: qemu-system-x86_64 -global mc146818rtc.lost_tick_policy=slew -machine accel=kvm:tcg -name win7 -S -machine pc-i440fx-1.4,accel=kvm,usb=off -m 2048 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 813f5806-64ec-3319-452a-5e1834e753c9 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/win7.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime -no-shutdown -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x5.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x5 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x5.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x5.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x8 -drive file=/data/vmware/win7.img,if=none,id=drive-virtio-disk0,format=qcow2 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -device usb-tablet,id=input0 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -vga std Hi, have you enable the kernel CPU idle driver? especially the guest kernel. Thanks Mike -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1174654 Title: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions -- 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
Re: [Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram
Hi, ok confusion cleared :-) actually i only have this issue with windows guests. linux guests do not show a high cpu usage after suspend resume. so are there any recommendations you would have to work around it ? regards, Tobias. On 18-10-13 09:42, mike wrote: On 10/18/2013 03:41 PM, tobias appelo wrote: Hello MIke, but this concerns a windows guest. you mean a kernel configuration within the guest (aka recompile ?) or a boot parameter within the guest ? Oh, sorry, I assume it is linux guest :) for windows, I have no idea of it :) Thanks Mike regards, Tobias. On 18-10-13 09:26, mike wrote: On 10/18/2013 03:12 PM, tobias wrote: Hello Mike, Thanks a lot for getting back on this. Is the cpu idle driver a command line option I need to specify for qemu (the -cpu option ?) I could not find a reference to idle in the man page. You need to check the guest kernel config file. Thanks Mike regards, Tobias. On 18-10-13 04:33, mike wrote: On 10/18/2013 04:29 AM, tobias wrote: hi, tried your option but it does not help. (cpu usage is still high) below my command line syntax: qemu-system-x86_64 -global mc146818rtc.lost_tick_policy=slew -machine accel=kvm:tcg -name win7 -S -machine pc-i440fx-1.4,accel=kvm,usb=off -m 2048 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 813f5806-64ec-3319-452a-5e1834e753c9 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/win7.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime -no-shutdown -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x5.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x5 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x5.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x5.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x8 -drive file=/data/vmware/win7.img,if=none,id=drive-virtio-disk0,format=qcow2 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -device usb-tablet,id=input0 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -vga std Hi, have you enable the kernel CPU idle driver? especially the guest kernel. Thanks Mike -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1174654 Title: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions -- 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 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram
hi, tried your option but it does not help. (cpu usage is still high) below my command line syntax: qemu-system-x86_64 -global mc146818rtc.lost_tick_policy=slew -machine accel=kvm:tcg -name win7 -S -machine pc-i440fx-1.4,accel=kvm,usb=off -m 2048 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 813f5806-64ec-3319-452a-5e1834e753c9 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/win7.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime -no-shutdown -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x5.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x5 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x5.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x5.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x8 -drive file=/data/vmware/win7.img,if=none,id=drive-virtio-disk0,format=qcow2 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -device usb-tablet,id=inpu t0 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -vga std -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1174654 Title: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions -- 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 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram
Please try -global mc146818rtc.lost_tick_policy=slew. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1174654 Title: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions -- 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 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram
Hi, I am also encountering the bug of high cpu usage for a windows guest after suspend resume of my ubuntu host. Problem was in 13.04 but it's also still there in 13.10. The windows guest has virtio / spice enabled. Linux guests do not get the high cpu usage. Are there any more logs required or is investigation going on upstream ? I am not sure where to look or curious whether there are other workarounds. ** Attachment added: win7.xml https://bugs.launchpad.net/qemu/+bug/1174654/+attachment/3875634/+files/win7.xml -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1174654 Title: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions -- 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 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram
** Description changed: I have Windows XP SP3 inside qemu VM. All works fine in 12.10. But after upgraiding to 13.04 i have to restart the VM each time i resuming my host machine, because qemu process starts to take CPU cycles and OS inside VM is very slow and sluggish. However it's still controllable and could be shutdown by itself. According to the taskmgr any active process takes 99% CPU. It's not - stucked on some single process. + stuck on some single process. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to qemu in Ubuntu. https://bugs.launchpad.net/bugs/1174654 Title: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions -- 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
