Re: [Xen-devel] HVM dropped packets

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 26/08/2009 08:45, "Nathan Stratton" <nathan@xxxxxxxxxxxx> wrote:

>> I bet the drops are caused by the low performance of Qemu nic _emulation_.
> 
> Does one emulate better then the rest?

e1000 is probably faster than the rest due to a more efficient hardware
interface better suited to emulation. You may still get receiver overruns
though (which I think was the source of the drops you were seeing?). That's
simply the host receiving packets faster than they can get stuffed through
the emulated interface.

 -- Keir



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