Re: when to relize the Paravirtualized networking ?

[Dor Laor <dor.laor-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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vast yellow wrote:
> Do you know the difference in code to improve the tap network between 
> the release kvm-44 and the release kvm45?
> which modify can improve the tap network performace?How is the work 
> flow of tap network in kvm?
The change is to trigger a signal to qemu when data is ready on the tap fd.
It will mainly improve latency. The change is not kvm specific and 
applicable to qemu too
> Why the qemu process use 100% cpu in host?
>
This might be a bug. What is the guest doing? Can you run the kvm_stat 
script?
>  
> 2007/10/3, Dor Laor <dor.laor-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org <mailto:dor.laor-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>>:
>
>     vast yellow wrote:
>>
>>     Anyone know when to release include the following features
>>
>>   # Paravirtualized networking
>     I have such a code in a separate git repository. It is not yet
>     production ready.
>     The next release is a rebase of Rusty code for virtio and some
>     KVM/Qemu backend.
>     It probably be ready in few weeks.
>>   # Paravirtualized block device
>     The effort is not big since Rusty has paved most of the way.
>     Some qemu block handling needs to be done. Again it can happen in
>     1-2 months.
>>     KVM Tap network is slower than Xen. Can we optimize it?
>>      
>     Are you talking about PV driver or fully virtualized nic?
>     Dor.
>      
>
>


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