Re: Guest OS lock up with 100% cpu usage when using tap

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Daniel Paquet wrote:
> Okay I just rebooted.
>
> Now the guest os takes forever to startup with the same behaviour as 
> before.
>
> I have no traffic on my tap device. The only trafic on tap device is 
> from the guest os and for now there is not much.
> And here is the output of dmesg
>
> apic write: bad size=1 fee00030
> Ignoring de-assert INIT to vcpu 0
> kvm: emulating exchange as write
>
> And the cpu usage it to 100% by system not user when locking up and 
> goes to user when running. It runs for 2-3 sec then hang and goes to 
> 100% cpu usage by system for 10 sec or more.
>
> Im getting the same behaviour with my firewall (nat) disabled.
> I just removed the tap device from the startup parameters and voila 
> the guest boots with no problems.
>
> I reinsert my tap parameter and the guest os dont boot as before still 
> with nat and firewall disabled, tap device is up with an ip address.
>
> Im still trying to do anything to solve this issue :-), feel free to 
> give some suggestions :).
>

What about taskset?  'taskset 1 qemu ...'

-- 
error compiling committee.c: too many arguments to function


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