leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
6479023976
linux/drivers/net/ethernet/intel/ixgbevf
History
Jesse Brandeburg 32b3e08fff drivers/net/intel: use napi_complete_done() 
As per Eric Dumazet's previous patches:
(see commit (24d2e4a507) - 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.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2015-10-16 04:33:46 -07:00
..
defines.h ixgbevf: Set Rx hash type for ingress packets 2015-07-17 19:59:07 -07:00
ethtool.c ixgbevf: add support for reporting RSS key and hash table for X550 2015-07-23 05:01:44 -07:00
ixgbevf_main.c drivers/net/intel: use napi_complete_done() 2015-10-16 04:33:46 -07:00
ixgbevf.h ixgbevf: add support for reporting RSS key and hash table for X550 2015-07-23 05:01:44 -07:00
Makefile ixgbevf: Update copyright notices 2012-02-03 03:07:09 -08:00
mbx.c ixgbevf: Fix code comments and whitespace 2015-03-13 15:41:07 -07:00
mbx.h ixgbevf: Add RSS Key query code 2015-04-11 11:39:19 -07:00
regs.h ixgbevf: Fix code comments and whitespace 2015-03-13 15:41:07 -07:00
vf.c ixgbevf: Add RSS Key query code 2015-04-11 11:39:19 -07:00
vf.h ixgbevf: Add RSS Key query code 2015-04-11 11:39:19 -07:00