Re: [announce] KVM/NET, paravirtual network device

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

Ingo Molnar wrote:
> here's a quick update wrt. the KVM paravirtualization work: i'm 
> currently working on KVM/NET, which is a Linux<->Linux virtual network 
> device driver between the KVM host and the KVM guest. It uses the new 
> KVM-paravirtualization infrastructure that i've sent to this list 
> yesterday.
>
> while the code is still a prototype, it's working already and here are 
> some early TCP bandwidth (bw_tcp from guest to host) performance results 
> which i'm sure you'll enjoy:
>
>   -----------------------------------------------------------
>   | Native via loopback (mtu=1500)         :  235.57 MB/sec |
>   | Native via loopback (mtu=4000)         :  487.12 MB/sec |
>   -----------------------------------------------------------
>   | Qemu via RTL-8029 emulation            :    2.84 MB/sec |
>   | KVM via RTL-8029 emulation             :    7.41 MB/sec |
>   -----------------------------------------------------------
>   | KVM-para via KVM/NET device (mtu=1500) :  303.35 MB/sec |
>   | KVM-para via KVM/NET device (mtu=4000) :  389.47 MB/sec |
>   -----------------------------------------------------------
>
>   

That's about a 5000% improvement :)

Amazing, both the bandwidth results and the speed in which it was 
reached.  I'm really at a loss for words.


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


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