* Anthony Liguori <[email protected]> wrote:
> Ingo Molnar wrote:
>>> I think the reason vbus gets better performance for networking today
>>> is that vbus' backends are in the kernel while virtio's backends are
>>> currently in userspace. Since Michael has a functioning in-kernel
>>> backend for virtio-net now, I suspect we're weeks (maybe days) away
>>> from performance results. My expectation is that vhost + virtio-net
>>> will be as good as venet + vbus. If that's the case, then I don't
>>> see any reason to adopt vbus unless Greg things there are other
>>> compelling features over virtio.
>>>
>>
>> Keeping virtio's backend in user-space was rather stupid IMHO.
>
> I don't think it's quite so clear.
in such a narrow quote it's not so clear indeed - that's why i
qualified it with:
>> Having the _option_ to piggyback to user-space (for flexibility,
>> extensibility, etc.) is OK, but not having kernel acceleration is
>> bad.
Ingo
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