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DRA829V: Why Ethernet performance becomes worse from SDK8.6 to SDK9.1 ?

Hideaki Matsumoto
Genius 9050 points
Part Number: DRA829V

Tool/software:

Hi,

 

There are the following Ethernet Throughput benchmark results in the document of Processor SDK Linux for j721e 08_06_00 and 09_01_00.

It seems that TCP Bidirectional Throughput performance becomes significantly worse from SDK 8.6 to SDK 9.1. Especially CPU Load.

Could you please help to explain why it becomes worse ?

 

In the document of 08_06_00

https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-jacinto7/08_06_00_11/exports/docs/devices/J7/linux/Release_Specific_Performance_Guide.html#ethernet

 

2.2.1.5.1. CPSW/CPSW2g/CPSW3g Ethernet Driver

 

TCP Bidirectional Throughput

Command Used

j721e-idk-gw: THROUGHPUT (Mbits/sec)

j721e-idk-gw: CPU Load % (LOCAL_CPU_UTIL)

netperf -H 192.168.0.1 -j -c -C -l 60 -t TCP_STREAM; netperf -H 192.168.0.1 -j -c -C -l 60 -t TCP_MAERTS

1844.71

27.81

 

 

In the document of 09_01_00

https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-jacinto7/09_01_00_06/exports/docs/devices/J7_Family/linux/Release_Specific_Performance_Guide.html#ethernet

 

2.2.1.5.1. CPSW/CPSW2g/CPSW3g Ethernet Driver

 

TCP Bidirectional Throughput

Command Used

j721e-idk-gw: THROUGHPUT (Mbits/sec)

j721e-idk-gw: CPU Load % (LOCAL_CPU_UTIL)

netperf -H 192.168.0.1 -j -c -C -l 60 -t TCP_STREAM; netperf -H 192.168.0.1 -j -c -C -l 60 -t TCP_MAERTS

1834.33

73.50

 

 

Thanks and regards,

Hideaki