Re: [PATCH] Set FrontendMaxQueues by default

["Durrant, Paul" <xadimgnik@xxxxxxxxx>]

On 26/05/2023 09:17, Owen Smith wrote:
> Limiting the number of queues to the same value defined in xennet's INF
> file prevents xenvif from allocating many more resources than required.
>
> Currently, xenvif will allocate a queue for each active CPU, but xennet
> only reports a maximum of 8 RSS queues to Windows. When vCPU count is
> greather than 8, additional queues are not used and just consume resources.
>
> Signed-off-by: Owen Smith <owen.smith@xxxxxxxxx>
Acked-by: Paul Durrant <paul@xxxxxxx>

> ---
>   src/xenvif.inf | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/src/xenvif.inf b/src/xenvif.inf
> index d81fe52..4b5c9f7 100644
> --- a/src/xenvif.inf
> +++ b/src/xenvif.inf
> @@ -88,6 +88,7 @@ HKR,,"BootFlags",0x00010003,0x81
>   [XenVif_Parameters]
>   HKR,"Parameters",,0x00000010
>   HKR,"Parameters","RequestKey",0x00000000,%RequestKey%
> +HKR,"Parameters","FrontendMaxQueues",0x00010001,0x00000008
>   
>   [XenVif_Inst.CoInstallers]
>   CopyFiles=CoInst_CopyFiles