performance of AXI interconnect？

[Alexander-0619]

Hi !

Do you know what performance metrics are used to measure AXI interconnect? If wants to determine the metircs through pre-sim, how to write the tb?

[atfox272]

Sorry for the late !

I think there are 3 main metrics for measuring the performance:

• Latency: >= 4 cycles (for each channel)
  • Rely on the access of each master
• Bandwidth: 100%
• Frequency
  • In 4 masters - 2 slaves - 8 outstanding mode
    • With Altera FPGA, the ICN can run at the maximum frequency of Altera FPGAs (50MHz)
    • With Xilinx FPGA, the ICN can run at the maximum frequency of Xilinx FPGAs (125MHz)
      However, the performance of each master using the ICN also relies on the utilization of each master

About the tb, I can not analyze the exact performance for each master in the tb. However, to determine the performance, you can modify the MST_WEIGHT parameter to set the weight of each master