Re: Freezing Windows 2008 x64bit guest

Harri Olin
2010-07-21T09:22:55Z

Gleb Natapov wrote:
> On Wed, Jul 21, 2010 at 09:25:31AM +0300, Harri Olin wrote:
>> Gleb Natapov kirjoitti:
>>> On Mon, Jul 19, 2010 at 10:17:02AM +0300, Harri Olin wrote:
>>>> Gleb Natapov kirjoitti:
>>>>> On Thu, Jul 15, 2010 at 03:19:44PM +0200, Christoph Adomeit wrote:
>>>>>> But one Windows 2008 64 Bit Server Standard is freezing regularly.
>>>>>> This happens sometimes 3 times a day, sometimes it takes 2 days
>>>>>> until freeze. The Windows Machine is a clean fresh install.
>>>> I think I have seen same problem occur on my Windows 2008 SBS SP2
>>>> 64bit system, but a bit less often, only like once a week.
>>>> Now I haven't seen crashes but only freezes with qemu on 100% and
>>>> virtual system unresponsive.
>>>>
>>>> qemu command line:
>>>> /usr/local/qemu-kvm-0.11.1/bin/qemu-system-x86_64 -drive
>>>> file=/dev/rigelvg/w2k8system,cache=none,boot=on -drive
>>>> file=/dev/rigelvg/w2k8data,cache=none -m 6144 -vnc :1 -net
>>>> nic,macaddr=C0:FF:12:FB:AA:01,model=e1000 -net tap -smp 4 -localtime
>>>>
>>>>
>>> Try with different model then e1000 please. Default driver that comes
>>> with Windows known to have problems.
>> Didn't help, changed to default realtek emulation, but system
>> freezed again. Command line:
>> /usr/local/qemu-kvm-0.11.1/bin/qemu-system-x86_64 -drive
>> file=/dev/rigelvg/w2k8system,cache=none,boot=on -drive
>> file=/dev/rigelvg/w2k8data,cache=none -m 6144 -vnc :1 -net
>> nic,macaddr=C0:FF:12:FB:AA:01 -net tap -smp 4 -localtime
>>
>> This time the virtual system was not totally unresponsive somehow,
>> system pinged just fine and I think DNS server worked too. However
>> on console mouse moved but didn't react to clicking, ctrl-alt-del,
>> etc.
>>
> Does sendkey from monitor works? qemu-kvm-0.11.1 is very old and this is
> not total freeze which even harder to debug. I don't see anything
> extraordinary in your logs. 4643 interrupt per second for 4 cpus is
> normal if windows runs multimedia or other app that need hi-res timers.
> Does your host swapping? Is there any chance that you can try upstream qemu-kvm?
>

I haven't tested sendkey. I originally tried 0.12.2 or so but with that
windows crashed more often with bluescreen, I went down to 0.11.1. This
might be related to -td-rtc-hack and/or e1000 as using td-rtc-hack on
0.11.1 windows crashed too to bluescreen.

System does not run any multimedia or so, on top of normal windows 2008
small business server installation there should be only nagios client
and apache.

Only thing that catches my eye on stats frozen vs normal is irq_exits
which jumps from 200 to 10000 when frozen and irq_window which goes 10x.

Host has swap partition enabled but hasn't swapped once yet, currently
there's over 1GB of free.

I'll update host kernel to latest stable and qemu-kvm to upstream later
today.

Here's stats from running system:
efer_reload 0 0
exits 386474714 23272
fpu_reload 173420913 12775
halt_exits 51894921 4294
halt_wakeup 51039254 4223
host_state_reload 188645310 13420
hypercalls 0 0
insn_emulation 212729430 15545
insn_emulation_fail 324 0
invlpg 5177828 134
io_exits 23132581 161
irq_exits 7485833 225
irq_injections 59239306 4655
irq_window 2147438 153
largepages 0 0
mmio_exits 110931423 9026
mmu_cache_miss 468410 0
mmu_flooded 193153 0
mmu_pde_zapped 352178 0
mmu_pte_updated 678023 0
mmu_pte_write 587175 0
mmu_recycled 34998 0
mmu_shadow_zapped 454073 0
mmu_unsync 19084 0
nmi_injections 0 0
nmi_window 0 0
pf_fixed 25171943 120
pf_guest 6209034 2
remote_tlb_flush 3044169 23
request_irq 0 0
signal_exits 0 0
tlb_flush 8422950 149

--
Harri.