kernel-packages team mailing list archive

[Matthew Anderson <matthewa@xxxxxxxxxxxx>]

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 intermittently (VNC console
unresponsive, network pings dropped to guest, frozen IO) for 20-60
seconds at a time which repeats constantly every few minutes and guests
do not recover unless QEMU is killed and the guest is started again.
Whilst the guest is frozen CPU usage of the QEMU process jumps to
100-150%.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "lspci-vnvn.log"
   https://bugs.launchpad.net/bugs/1322441/+attachment/4118035/+files/lspci-vnvn.log

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https://bugs.launchpad.net/bugs/1322441

Title:
  Windows guest unstable after random amount of time

Status in “linux” package in Ubuntu:
  New

Bug description:
  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 intermittently (VNC console
  unresponsive, network pings dropped to guest, frozen IO) for 20-60
  seconds at a time which repeats constantly every few minutes and
  guests do not recover unless QEMU is killed and the guest is started
  again. Whilst the guest is frozen CPU usage of the QEMU process jumps
  to 100-150%.

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