Re: [Xen-users] bad network perfornance too many frags messages

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Mon, Apr 08, 2013 at 01:35:32PM +0100, Alexis Pellicier wrote:
> xenstore-ls /local/domain/14/device/vif/0
> 
> show me
> backend = "/local/domain/0/backend/vif/14/0"
> feature-sg = "1"
> 
> 
> xenstore-ls /local/domain/0/backend/vif/14/0
> feature-sg = "1"
> 
> So I guess it means sg is enable on both backend and frontend.
> 

SG is always used whenever possible. This has nothing to do with the
bridge.

Unfortunately there is no option to disable it. If you fancy recompiling
backend driver, look at drivers/net/xen-netback/xenbus.c:netback_probe
and change 'sg = 1' to 'sg = 0'.


Wei.

> 
> Sorry for the top post I was just "reply to all" in my mailer.
> 

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