On Thu, 2015-10-15 at 14:43 -0700, Jeff Kirsher wrote: > From: Jesse Brandeburg <jesse.brandeb...@intel.com> > > As per Eric Dumazet's previous patches: > (see commit (24d2e4a50737) - tg3: use napi_complete_done()) > > Quoting verbatim: > Using napi_complete_done() instead of napi_complete() allows > us to use /sys/class/net/ethX/gro_flush_timeout > > GRO layer can aggregate more packets if the flush is delayed a bit, > without having to set too big coalescing parameters that impact > latencies. > </end quote> > > Tested > configuration: low latency via ethtool -C ethx adaptive-rx off > rx-usecs 10 adaptive-tx off tx-usecs 15 > workload: streaming rx using netperf TCP_MAERTS > > igb: > MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.0.1 () > port 0 AF_INET : demo > ... > Interim result: 941.48 10^6bits/s over 1.000 seconds ending at 1440193171.589 > > Alignment Offset Bytes Bytes Recvs Bytes Sends > Local Remote Local Remote Xfered Per Per > Recv Send Recv Send Recv (avg) Send (avg) > 8 8 0 0 1176930056 1475.36 797726 16384.00 71905 > > MIGRATED TCP MAERTS TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.0.1 () > port 0 AF_INET : demo > ... > Interim result: 941.49 10^6bits/s over 0.997 seconds ending at 1440193142.763 > > Alignment Offset Bytes Bytes Recvs Bytes Sends > Local Remote Local Remote Xfered Per Per > Recv Send Recv Send Recv (avg) Send (avg) > 8 8 0 0 1175182320 50476.00 23282 16384.00 71816 > > i40e: > Hard to test because the traffic is incoming so fast (24Gb/s) that GRO > always receives 87kB, even at the highest interrupt rate. > > Other drivers were only compile tested. > > Signed-off-by: Jesse Brandeburg <jesse.brandeb...@intel.com> > Tested-by: Andrew Bowers <andrewx.bow...@intel.com> > Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
Hi guys I am not sure the ixgbe part is working : ixgbe_qv_unlock_napi() does : /* flush any outstanding Rx frames */ if (q_vector->napi.gro_list) napi_gro_flush(&q_vector->napi, false); And it is called before napi_complete_done(napi, work_done); -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html