[dpdk-dev] net/i40e: Significant performance degradation relative to DPDK 17.02 with TRex use-cases

Hanoch Haim (hhaim) hhaim at cisco.com
Fri Nov 24 12:36:36 CET 2017


Hi All,
Significant performance degradation observed with DPDK 17.11
The Scenario is with TRex traffic generator  (https://github.com/cisco-system-traffic-generator/trex-core)


1.       Stateless mode, 64B packet stream (multi-core/single core)

DPDK 17.02 - 37-39MPPS/core
DPDK 17.11 - 33.5MPPS/core

~12% degradation


2.       Stateless mode, Field Engine  (Multi-core)


DPDK 17.02 - 14MPPS/core
DPDK 17.11 -11.8MPPS/core

~15% degradation


3.       Only DPDK was replaced

4.       Is this expected?

The full report can be found here:
https://trex-tgn.cisco.com/trex/doc/trex_analytics.html



*         Mellanox CX-5 (mlx5) shows significant improvement

*         Ixgbe shows improvement

Thanks,
Hanoh



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