Wind River Support Network

HomeDefectsLIN7-7380
Fixed

LIN7-7380 : 40G network driver performance issue

Created: Feb 8, 2017    Updated: Sep 8, 2018
Resolved Date: Mar 21, 2017
Found In Version: 7.0.0.13
Fix Version: 7.0.0.24
Severity: Severe
Applicable for: Wind River Linux 7
Component/s: BSP

Description

Customer report a performance issue on wrlinux7.
-----------------
Besides we use the iperf to test the performance of 1G, 10G, 40G network on our target board. 
But the 40G speed is strange, the iperf test result is only 2~3Gbits/sec. 
But we change to Centos to test the 40G speed using the iperf, the result can run to about 37Gbits/sec. 
So we think it might the driver to cause this problem. 

-----------------

The customer's hardware is:
-----------------------
1. what your CPU and chipset of your board

-> CPU is Haswell-EP(number=2), memory is DDR4 8G(number=16), PCH is Wellsburg C612. 

2. What the NIC card do you use ?

-> I350-AM2 1G network, 82599ES 10G network, XL710-AM2 40G network.
-----------------------

Attched files are the test log customer do in their lab, as described in the steps to reproduce. 

Steps to Reproduce

****************

40G network test

****************

target_A(40G port)(Wind River Linux 7 OS)<-------->target_B(40G port)(Wind River Linux 7 OS)

Before iperf test, we already ping each other successfully.

target_A board: iperf command  

# ./iperf -s -w 1000M

target_B board: iperf command

# ./iperf -c 192.168.2.12 -w 1000M -t 60 -i 10 -P5

No matter how we change the window size or open more threads the performance test result only show 2~3Gbits/sec.

---------------------------------------------------------------------------------

We did another test like the following.

(A)

target_A(40G port)(Wind River Linux 7 OS)<-------->target_B(40G port)(Centos)

The iperf performance test result still the same 2~3Gbits/sec..

(B)

target_A(40G port)(Centos)<-------->target_B(40G port)(Centos)

The iperf performance test result can go up to about 37Gbits/sec which is normal.

Other Downloads


Live chat
Online