> -----Original Message----- > From: Intel-wired-lan <intel-wired-lan-bounces@xxxxxxxxxx> On Behalf Of > Björn Töpel > Sent: Thursday, July 2, 2020 8:37 AM > To: intel-wired-lan@xxxxxxxxxxxxxxxx > Cc: netdev@xxxxxxxxxxxxxxx; bpf@xxxxxxxxxxxxxxx; Topel, Bjorn > <bjorn.topel@xxxxxxxxx>; Karlsson, Magnus <magnus.karlsson@xxxxxxxxx> > Subject: [Intel-wired-lan] [PATCH net-next 1/4] i40e, xsk: remove HW > descriptor prefetch in AF_XDP path > > From: Björn Töpel <bjorn.topel@xxxxxxxxx> > > The software prefetching of HW descriptors has a negative impact on the > performance. Therefore, it is now removed. > > Performance for the rx_drop benchmark increased with 2%. > > Signed-off-by: Björn Töpel <bjorn.topel@xxxxxxxxx> > --- > drivers/net/ethernet/intel/i40e/i40e_txrx.c | 13 +++++++++++++ > drivers/net/ethernet/intel/i40e/i40e_txrx_common.h | 13 ------------- > drivers/net/ethernet/intel/i40e/i40e_xsk.c | 12 ++++++++++++ > 3 files changed, 25 insertions(+), 13 deletions(-) Tested-by: Andrew Bowers <andrewx.bowers@xxxxxxxxx>
