Guest support status page

Guest support status page

[Avi Kivity]

I added a page on the wiki to track the status of various guest 
operating systems, and seeded it with my usual testcases.

Please add your favorite guests to the page so others can see at a 
glance what works and what doesn't.  Please mention any workarounds 
(e.g. for the big real mode problems) in the comments column.

http://kvm.qumranet.com/kvmwiki/Guest_Support_Status

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Re: Guest support status page

[Michael Riepe]

Hi!

Avi Kivity wrote:
> I added a page on the wiki to track the status of various guest 
> operating systems, and seeded it with my usual testcases.

You should add a column for the host CPU. It really makes a difference
in some cases.

-- 
Michael "Tired" Riepe <michael-0QoEqw4nQxo@public.gmane.org>
X-Tired: Each morning I get up I die a little

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Re: Guest support status page

[Fabian Deutsch]

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Hey,

> 
> Avi Kivity wrote:
> > I added a page on the wiki to track the status of various guest 
> > operating systems, and seeded it with my usual testcases.
> 
> You should add a column for the host CPU. It really makes a difference
> in some cases.
> 

Maybe there should also be a colum for the Host-OS too.

- fabian

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Re: Guest support status page

[Avi Kivity]

Fabian Deutsch wrote:
> Hey,
>
>   
>> Avi Kivity wrote:
>>     
>>> I added a page on the wiki to track the status of various guest 
>>> operating systems, and seeded it with my usual testcases.
>>>       
>> You should add a column for the host CPU. It really makes a difference
>> in some cases.
>>
>>     
>
> Maybe there should also be a colum for the Host-OS too.
>   

I expect that host OS will affect all guests equally.  Maybe we should 
have a "Host support page", but I'm not sure there's such a need as we 
have many more guests than hosts, and usually all hosts will work.


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Re: Guest support status page

[Fabian Deutsch]

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Avi Kivity wrote:
> Fabian Deutsch wrote:
> > Hey,
> >
> >   
> >> Avi Kivity wrote:
> >>     
> >>> I added a page on the wiki to track the status of various guest 
> >>> operating systems, and seeded it with my usual testcases.
> >>>       
> >> You should add a column for the host CPU. It really makes a difference
> >> in some cases.
> >>
> >>     
> >
> > Maybe there should also be a colum for the Host-OS too.
> >   
> 
> I expect that host OS will affect all guests equally.  Maybe we should 
> have a "Host support page", but I'm not sure there's such a need as we 
> have many more guests than hosts, and usually all hosts will work.
> 
Well currently I'm using Fedora Core 6 as a host. And kvm doesn't work with all but the original kernel. 

title Fedora Core (2.6.19-1.2895.fc6) <-- Doesn't
title Fedora Core (2.6.18-1.2869.fc6) <-- Doesn't
title Fedora Core (2.6.18-1.2798.fc6) <-- Works

I am currently not able to find out how.

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Re: Guest support status page

[Avi Kivity]

Fabian Deutsch wrote:
> Well currently I'm using Fedora Core 6 as a host. And kvm doesn't work with all but the original kernel. 
>
> title Fedora Core (2.6.19-1.2895.fc6) <-- Doesn't
> title Fedora Core (2.6.18-1.2869.fc6) <-- Doesn't
> title Fedora Core (2.6.18-1.2798.fc6) <-- Works
>
> I am currently not able to find out how.
>   

It's working for me under 2.6.19-1.2895.fc6.  Is there anything in 
dmesg?  What form does the failure take?


-- 
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Re: Guest support status page

[Fabian Deutsch]

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Am Sonntag, den 28.01.2007, 20:16 +0200 schrieb Avi Kivity:
> Fabian Deutsch wrote:
> > Well currently I'm using Fedora Core 6 as a host. And kvm doesn't work with all but the original kernel. 
> >
> > title Fedora Core (2.6.19-1.2895.fc6) <-- Doesn't
> > title Fedora Core (2.6.18-1.2869.fc6) <-- Doesn't
> > title Fedora Core (2.6.18-1.2798.fc6) <-- Works
> >
> > I am currently not able to find out how.
> >   
> 
> It's working for me under 2.6.19-1.2895.fc6.  Is there anything in 
> dmesg?  What form does the failure take?
> 
> 

Well, after stressing the guest a couple of times for a couple of
seconds, it starts to use 100% and the guest doesn't respond anymore.

# uname -a
Linux corevm 2.6.19-1.2895.fc6 #1 SMP Wed Jan 10 19:28:18 EST 2007 i686
i686 i386 GNU/Linux

# dmesg | grep kvm
kvm: msrs: 2
kvm: msrs: 2
kvm: emulating exchange as write

# top
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1625 root      25   0  564m 143m 138m R  100  4.0   4:32.77 qemu

# cat /proc/cpuinfo | grep name
model name      : Intel(R) Core(TM)2 CPU          6300  @ 1.86GHz
model name      : Intel(R) Core(TM)2 CPU          6300  @ 1.86GHz


the problem might be: different qemu and kvm-module version ... (older
qemu, newer kvm), because afetr deleteing everything related to kvm and
rebudiling it from a clean source. the problem seems to be gone .. 

- fabian

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Re: Guest support status page

[Avi Kivity]

Fabian Deutsch wrote:
> Am Sonntag, den 28.01.2007, 20:16 +0200 schrieb Avi Kivity:
>   
>> Fabian Deutsch wrote:
>>     
>>> Well currently I'm using Fedora Core 6 as a host. And kvm doesn't work with all but the original kernel. 
>>>
>>> title Fedora Core (2.6.19-1.2895.fc6) <-- Doesn't
>>> title Fedora Core (2.6.18-1.2869.fc6) <-- Doesn't
>>> title Fedora Core (2.6.18-1.2798.fc6) <-- Works
>>>
>>> I am currently not able to find out how.
>>>   
>>>       
>> It's working for me under 2.6.19-1.2895.fc6.  Is there anything in 
>> dmesg?  What form does the failure take?
>>
>>
>>     
>
> Well, after stressing the guest a couple of times for a couple of
> seconds, it starts to use 100% and the guest doesn't respond anymore.
>
> # uname -a
> Linux corevm 2.6.19-1.2895.fc6 #1 SMP Wed Jan 10 19:28:18 EST 2007 i686
> i686 i386 GNU/Linux
>
> # dmesg | grep kvm
> kvm: msrs: 2
> kvm: msrs: 2
> kvm: emulating exchange as write
>
> # top
>   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>  1625 root      25   0  564m 143m 138m R  100  4.0   4:32.77 qemu
>
> # cat /proc/cpuinfo | grep name
> model name      : Intel(R) Core(TM)2 CPU          6300  @ 1.86GHz
> model name      : Intel(R) Core(TM)2 CPU          6300  @ 1.86GHz
>
>
> the problem might be: different qemu and kvm-module version ... (older
> qemu, newer kvm), because afetr deleteing everything related to kvm and
> rebudiling it from a clean source. the problem seems to be gone .. 
>
>   

Okay, good...  If it was you who put 2.6.19-1.2895.fc6 as non-working in 
the wiki, then please remove it :)


-- 
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Re: Guest support status page

[Fabian Deutsch]

Hey,

> >>>       
> >> It's working for me under 2.6.19-1.2895.fc6.  Is there anything in 
> >> dmesg?  What form does the failure take?
> >>
> >
> > Well, after stressing the guest a couple of times for a couple of
> > seconds, it starts to use 100% and the guest doesn't respond anymore.
> >
> > # uname -a
> > Linux corevm 2.6.19-1.2895.fc6 #1 SMP Wed Jan 10 19:28:18 EST 2007 i686
> > i686 i386 GNU/Linux
> >
> > # dmesg | grep kvm
> > kvm: msrs: 2
> > kvm: msrs: 2
> > kvm: emulating exchange as write
> >
> > # top
> >   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
> >  1625 root      25   0  564m 143m 138m R  100  4.0   4:32.77 qemu
> >
> > # cat /proc/cpuinfo | grep name
> > model name      : Intel(R) Core(TM)2 CPU          6300  @ 1.86GHz
> > model name      : Intel(R) Core(TM)2 CPU          6300  @ 1.86GHz
> >
> >
> > the problem might be: different qemu and kvm-module version ... (older
> > qemu, newer kvm), because afetr deleteing everything related to kvm and
> > rebudiling it from a clean source. the problem seems to be gone .. 
> >
> >   
> 
> Okay, good...  If it was you who put 2.6.19-1.2895.fc6 as non-working in 
> the wiki, then please remove it :)

Yesterday everything seemed to be fine - I cleaned everything: removed old modules and binaries and built kvm-12 - but today I discovered that the problem reappeared: 100% CPU utilization and no real reason for this.
FC6 host and guest. The host using the latest kernel (2.6.19-1.2895.fc6) the guest teh original one ...

No new messages in dmesg. Nothing changed and not heavily used over night.

-- 
Fabian Deutsch <fabian.deutsch-Mmb7MZpHnFY@public.gmane.org>


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Re: Guest support status page

[Avi Kivity]

Fabian Deutsch wrote:
>>>   
>>>       
>> Okay, good...  If it was you who put 2.6.19-1.2895.fc6 as non-working in 
>> the wiki, then please remove it :)
>>     
>
> Yesterday everything seemed to be fine - I cleaned everything: removed old modules and binaries and built kvm-12 - but today I discovered that the problem reappeared: 100% CPU utilization and no real reason for this.
> FC6 host and guest. The host using the latest kernel (2.6.19-1.2895.fc6) the guest teh original one ...
>
> No new messages in dmesg. Nothing changed and not heavily used over night.
>
>   

Can you post an 'strace -ttT -p <pid>'?

Test with 'taskset 1'?

Also, please describe your host hardware.


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Re: Guest support status page

[Avi Kivity]

Michael Riepe wrote:
> Hi!
>
> Avi Kivity wrote:
>   
>> I added a page on the wiki to track the status of various guest 
>> operating systems, and seeded it with my usual testcases.
>>     
>
> You should add a column for the host CPU. It really makes a difference
> in some cases.
>
>   
Makes sense.  So added.

-- 
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