[Kernel-packages] [Bug 1322441] [NEW] Windows guest unstable after random amount of time

Public bug reported: Ubuntu 14.04, all updates done as of 23/5/2014 Kernel : Linux 3.13.0-24-generic Qemu : 1.7.1 and 2.0.0 tested Tested using both Xeon 5620 and 5520 processors, 48GB RAM. Anywhere from 20 minutes for 3+ hours after booting Windows guests become unstable. Guest appear to freeze

[Kernel-packages] [Bug 1322441] Re: Windows guest unstable after random amount of time

The bug occurred when upgrading from 12.04.1 (3.2 kernel) to 14.04 (3.13 kernel). Booting with the old 3.2 kernel resolves the problem. Guest command line - qemu-system-x86_64 -enable-kvm -name test -S-machine pc-i440fx-1.4,accel=kvm,usb=off -cpu qemu64,hv_relaxed -m 4096 -realtimemlock=off

[Kernel-packages] [Bug 1322441] Re: Windows guest unstable after random amount of time

apport information ** Tags added: apport-collected trusty ** Description changed: Ubuntu 14.04, all updates done as of 23/5/2014 Kernel : Linux 3.13.0-24-generic Qemu : 1.7.1 and 2.0.0 tested Tested using both Xeon 5620 and 5520 processors, 48GB RAM. - Anywhere from 20 minutes for 3+

[Kernel-packages] [Bug 1322441] Lsusb.txt

apport information ** Attachment added: Lsusb.txt https://bugs.launchpad.net/bugs/1322441/+attachment/4118532/+files/Lsusb.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1322441

[Kernel-packages] [Bug 1322441] CurrentDmesg.txt

apport information ** Attachment added: CurrentDmesg.txt https://bugs.launchpad.net/bugs/1322441/+attachment/4118529/+files/CurrentDmesg.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1322441] Lspci.txt

apport information ** Attachment added: Lspci.txt https://bugs.launchpad.net/bugs/1322441/+attachment/4118531/+files/Lspci.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1322441

[Kernel-packages] [Bug 1322441] ProcModules.txt

apport information ** Attachment added: ProcModules.txt https://bugs.launchpad.net/bugs/1322441/+attachment/4118536/+files/ProcModules.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1322441] ProcEnviron.txt

apport information ** Attachment added: ProcEnviron.txt https://bugs.launchpad.net/bugs/1322441/+attachment/4118534/+files/ProcEnviron.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1322441] WifiSyslog.txt

apport information ** Attachment added: WifiSyslog.txt https://bugs.launchpad.net/bugs/1322441/+attachment/4118539/+files/WifiSyslog.txt ** Changed in: linux (Ubuntu) Status: Incomplete = Confirmed -- You received this bug notification because you are a member of Kernel Packages,

[Kernel-packages] [Bug 1322441] IwConfig.txt

apport information ** Attachment added: IwConfig.txt https://bugs.launchpad.net/bugs/1322441/+attachment/4118530/+files/IwConfig.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1322441] UdevDb.txt

apport information ** Attachment added: UdevDb.txt https://bugs.launchpad.net/bugs/1322441/+attachment/4118537/+files/UdevDb.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1322441

[Kernel-packages] [Bug 1322441] ProcInterrupts.txt

apport information ** Attachment added: ProcInterrupts.txt https://bugs.launchpad.net/bugs/1322441/+attachment/4118535/+files/ProcInterrupts.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1322441] ProcCpuinfo.txt

apport information ** Attachment added: ProcCpuinfo.txt https://bugs.launchpad.net/bugs/1322441/+attachment/4118533/+files/ProcCpuinfo.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1322441] UdevLog.txt

apport information ** Attachment added: UdevLog.txt https://bugs.launchpad.net/bugs/1322441/+attachment/4118538/+files/UdevLog.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1322441] Re: QEMU Windows guest unstable after random amount of time

BIOS has now been updated # sudo dmidecode -s bios-version sudo dmidecode -s bios-release-date 2.1c 04/22/2014 I've been able to reproduce the problem using a fresh Windows 2008R2 server image. The guest functions correctly for a period of time then starts to 'freeze' for around 10 seconds

[Kernel-packages] [Bug 1322441] Re: QEMU Windows guest unstable after random amount of time

Tested with kernel - Linux 3.15.0-031500rc7-generic After 24 hours there's no sign of the problem. After watching numastat for a while I noticed that with the 3.13.0 kernel the allocated memory for qemu does a really sudden drop from 6GB down to 2GB. QEMU then freezes with 100% CPU until the