Re: [ANNOUNCE] kvm-46 release

Farkas Levente
2007-10-15T14:22:49Z

Avi Kivity wrote:
> Farkas Levente wrote:
>> Avi Kivity wrote:
>>
>>> Farkas Levente wrote:
>>>
>>>>>> we did a quick test against this version and it's turn out the smp
>>>>>> guests are still not working. even if we start only one linux guest
>>>>>> with
>>>>>> 4cpu on 4cpu host the guest kernel hangs at random stages of the kernel
>>>>>> loading process (if we run more smp guests then they hang earlier, but
>>>>>> different random stage), but it's never reach the end of the kernel so
>>>>>> hang somewhere inside the kernel. and the cpu usage of these process
>>>>>> goes up to until the qemu-kvm processes eat all cpus (ie. 100%). t
>>>>>>
>>>>>>
>>>>> What host cpu are you using? What guest kernel version? 32-bit or
>>>>> 64-bit?
>>>>>
>>>>> I have no problems running a 4-way Linux guest here.
>>>>>
>>>>>
>>>> - host:
>>>> - Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
>>>> - Intel S3000AHV
>>>> - 8GB RAM
>>>> - CentOS-5
>>>> - kernel-2.6.18-8.1.14.el5 x86_64 64bit
>>>> - guest-1:
>>>> - CentOS-5
>>>> - kernel-2.6.18-8.1.14.el5 i386 32bit
>>>> - guest-2:
>>>> - CentOS-5
>>>> - kernel-2.6.18-8.1.14.el5 x86_64 64bit
>>>> - guest-3:
>>>> - Mandrake-9
>>>> - kernel-2.4.19.16mdk-1-1mdk 32bit
>>>> - guest-4:
>>>> - Windows XP Professional 32bit
>>>>
>>>> start the first guest-1 with 4cpu produce the above hang. (and of course
>>>> using kvm-46:-)
>>>>
>>>>
>>>>
>>> Is it the only guest that hangs with -smp 4? Or all of them?
>>>
>> if i start this guest alone it's hang. if i start all guest-{1,2,3,4}
>> than all linux guest hangs expect windows which runs but see only one
>> cpu. ok now i try it for you:-) so:
>>
>> - host + guest-1 -> hang
>>
>> - host + guest-2 -> hang
>> in this case i've got a stack trace too on the host, and the host
>> working 2 more minutes (!?) so i see the top part of the stack
>> (shift-pageup) but when i try to take a picture the host crash and i can
>> only see the end:-( but next time i bale to catch it:
>> -----------------------------------------------
>> BUG: soft lockup detected on CPU#0!
>>
>
> Yunfeng reports that this has been fixed, can you try the latest
> snapshot from http://people.qumranet.com/avi/snapshots/?

and the rpms in my repo, but i'd rather wait for kvm-47 since this's a
production server and i'd like to play with it only once a week:-)

--
Levente "Si vis pacem para bellum!"