Re: [Xen-devel] [PATCH 0/2] xen/net: limit number of tx/rx queues

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Tue, Jan 10, 2017 at 02:32:50PM +0100, Juergen Gross wrote:
> The Xen network frontend/backend supports multiple tx/rx queues for one
> virtual interface. The number of queues supported by the backend is
> set to the number of cpus of the backend driver domain (usually dom0)
> and the number of queues requested by the frontend is limited by the
> number of vcpus of the related guest.
> 
> On large systems this can lead to ridiculous large number of queues
> exhausting the required number of grant pages rather quick.
> 
> To avoid this limit the default maximum on both sides to 8. Both
> frontend and backend maximum can be individually tuned via module
> parameters.
> 
> Juergen Gross (2):
>   xen/netfront: set default upper limit of tx/rx queues to 8
>   xen/netback: set default upper limit of tx/rx queues to 8
> 

Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>

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