Re: [Xen-devel] what's maximum speed setting for xen network?

[Xin Zhao <zhaoxin@xxxxxxxxxxxxxx>]

I just setup network and tried to copy files between dom0 and domU. The
speed is around 100Mb/s. So I once thought it is simulating 100Mb network,
but after looking into the network driver, I failed to find anything about
the flow control.

I didn't try UDP, so have no idea about UDP losses.

Xin


On Fri, 22 Apr 2005, mukesh agrawal wrote:

>
> > For a physical network card, it has a maximum transmission speed such as
> > 100Mb. How about network in a virtual machine? It is a virtual network
> > card. Is there any speed limit? Or it can transmit as fast as possible?
> > If so, I guess network transmission happened within a physical host
> > should be very fast (great than 100Mb). But this is not true in my
> > experiment.
>
> Out of curiousity, what kind of testing have you run, and what kind
> of speeds are you getting?
>
> I've got a configuration with DomU talking to Dom0 over a vif, and seem to
> be seeing UDP losses, even at low data rates. (I haven't dug into this
> deeply to very the problem yet, though.) So I'd be interested if you're
> seeing something similar.
>
> Thanks,
> mukesh
>
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