[Intel-wired-lan] [PATCH S20 04/15] ice: Set minimum default Rx descriptor count to 512

Bowers, AndrewX andrewx.bowers at intel.com
Mon Apr 29 18:11:57 UTC 2019


> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at osuosl.org] On
> Behalf Of Anirudh Venkataramanan
> Sent: Tuesday, April 16, 2019 10:31 AM
> To: intel-wired-lan at lists.osuosl.org
> Subject: [Intel-wired-lan] [PATCH S20 04/15] ice: Set minimum default Rx
> descriptor count to 512
> 
> From: Brett Creeley <brett.creeley at intel.com>
> 
> Currently we set the default number of Rx descriptors per queue to the
> system's page size divided by the number of bytes per descriptor. For 4K
> page size systems this is resulting in 128 Rx descriptors per queue. This is
> causing more dropped packets than desired in the default configuration. Fix
> this by setting the minimum default Rx descriptor count per queue to 512.
> 
> Signed-off-by: Brett Creeley <brett.creeley at intel.com>
> Signed-off-by: Anirudh Venkataramanan
> <anirudh.venkataramanan at intel.com>
> ---
>  drivers/net/ethernet/intel/ice/ice.h | 19 +++++++++++++------
>  1 file changed, 13 insertions(+), 6 deletions(-)

Tested-by: Andrew Bowers <andrewx.bowers at intel.com>




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