[TriLUG] XEN bridging with SLES 11
jackhill at jackhill.us
Thu Jun 30 08:59:09 EDT 2011
On Wed, 2011-06-29 at 09:14 -0400, Stephen Boyte wrote:
> I wondered if anyone could shed some light on a simple way to pipe in a 10GB
> or even 1GB connection to guest servers on a XEN install of SLES 11.
> Currently, I only see the default drivers and choices for the connections.
> I have a 10GB connection to DOM 0 but only seem to get 100Mbs connection
> through the old Realtek driver. Any ideas would be greatly appreciated. If
> it makes any difference my onboard nics use an Emulex driver.
To be clear SLES is the dom0 or domU? What is the other one?
My first thought would be to try running it under paravirtualization
instead of hardware-supported virtualization. The paravirt hardware is
more performant than the emulated hardware. As an added bonus you might
bet better disk performance as well.
One or two years ago I had problems where paravm domU nics came up with
tcp segmentation offload on (or after migrating between hosts). This
drastically cut down on performance, but everything was speedy once I
turned it off. I believe that this has been fixed, but if you're having
problems with your paravm I would look at the output of ethtool -k.
Hope that helps,
More information about the TriLUG