Re: [Xen-devel] Xen + Win2k3 HVM - Slow network

[Keir Fraser <keir@xxxxxxxxxxxxx>]

On 28/11/06 8:37 am, "Sébastien RICCIO" <sr@xxxxxxxxxxxxxxx> wrote:

> While doing some network throughput tests, I noticed that the para
> virtualised guests gets up to 11MB/s transfers rate but the Windows
> 2003 Server gets only 1.3MB/s on the same file (downloaded from LAN).
> 
> Dom0 - CentOS 4.4 64bit
> DomUs - CentOS 4.4 64bit
> HVM guests - Win 2003 server 32bit (pcnet driver)
> 
> Any clues what could be the problem ?

The HVM guest is emulating a rtl8139 network card rather than using a
high-performance paravirtualised frontend network driver.

 -- Keir


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