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Date: Sat, 5 Sep 2020 03:03:46 +0000 From: "Brown, Aaron F" <aaron.f.brown@...el.com> To: Björn Töpel <bjorn.topel@...il.com>, "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org> CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "bpf@...r.kernel.org" <bpf@...r.kernel.org>, "Topel, Bjorn" <bjorn.topel@...el.com>, "Karlsson, Magnus" <magnus.karlsson@...el.com>, "kuba@...nel.org" <kuba@...nel.org> Subject: RE: [Intel-wired-lan] [PATCH net-next v2 3/3] i40e, xsk: move buffer allocation out of the Rx processing loop > From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of > Björn Töpel > Sent: Tuesday, August 25, 2020 4:36 AM > To: intel-wired-lan@...ts.osuosl.org > Cc: netdev@...r.kernel.org; bpf@...r.kernel.org; Topel, Bjorn > <bjorn.topel@...el.com>; Karlsson, Magnus <magnus.karlsson@...el.com>; > kuba@...nel.org > Subject: [Intel-wired-lan] [PATCH net-next v2 3/3] i40e, xsk: move buffer > allocation out of the Rx processing loop > > From: Björn Töpel <bjorn.topel@...el.com> > > Instead of checking in each iteration of the Rx packet processing > loop, move the allocation out of the loop and do it once for each napi > activation. > > For AF_XDP the rx_drop benchmark was improved by 6%. > > Signed-off-by: Björn Töpel <bjorn.topel@...el.com> > --- > drivers/net/ethernet/intel/i40e/i40e_xsk.c | 12 ++++-------- > 1 file changed, 4 insertions(+), 8 deletions(-) > Tested-by: Aaron Brown <aaron.f.brown@...el.com>
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