On 13-05-04 02:35 AM, Stephan von Krawczynski wrote:
> Sorry guys, but I cannot let go this topic.
> Maybe it helps to understand the reason why I am very interested in a 
> solution:
>
> Imagine you have two guests, one server of some network file system and one
> client for it.
> If the client file-stats some 10.000 files (which creates small single packets
> for every file) there is a big difference between having latencies around
> 0.100 ms and 10-100 ms (which is quite a normal value while using virtio-net).
> So bandwidth does not help you a lot here.
> If anybody has an idea what to patch on the OSE virtio-net driver feel free to
> make suggestions.
> If even the devs are not interested in this topic I'll probably end up with
> qemu, because this question is a real show-stopper.
>

there is definitely something not right there.

Have you tried other network drivers?  How about the Intel drivers?

As well, are you doing host-only or bridged network configuration?

For example, I just spun up two Ubuntu 12.04 guests using the Intel 1000 
MT (82540EM) driver on the host-only network with this output.

--- 10.10.64.101 ping statistics ---
82 packets transmitted, 82 received, 0% packet loss, time 81110ms
rtt min/avg/max/mdev = 0.294/0.921/1.562/0.176 ms



Geoff





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