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TDA4VM: How to understand perf log with ti perf api

Li Naifan
Prodigy 50 points
Part Number: TDA4VM


1. How to understand the Perf  Log?

    a) What's the meaning of HWI or SWI? Ant the releationship with the "TOTAL LOAD"？

b)        TOTAL LOAD is an average value or Instantaneous value?

c) what's the meaning of "MP/s"?

d) Summary load can not match the sum of detail load

e) what's the meaning of DDR SHARED MEM or DDR SCRATCH MEM?

f) how can i know how much HW source is used when tidl do inference operation? 

  • 0
    TI__Guru**** 485245 points

    Hi,

    Li Naifan said:
    a) What's the meaning of HWI or SWI? Ant the releationship with the "TOTAL LOAD"？

    This provides CPU load for processing Hardware Interrupt (ISR) and Software Interrupt (Soft ISR).

    Li Naifan said:
    b)        TOTAL LOAD is an average value or Instantaneous value?

    Total Load is instantaneous value. 

    Li Naifan said:
    c) what's the meaning of "MP/s"?

    Thats Mega Pixels/second, that's the throughput of VHWA blocks.

    Li Naifan said:
    e) what's the meaning of DDR SHARED MEM or DDR SCRATCH MEM?

    Please refer to memory document in the vision apps to understand different memory sections.

    Li Naifan said:
    f) how can i know how much HW source is used when tidl do inference operation? 

    Did not get it, which HW resource you are interested in?

    Regards,

    Brijesh