Linux/TDA2: Why CPU utilization can't be improved anymore

shuai wang32

Genius 4770 points

Part Number: TDA2

Tool/software: Linux

i am using SDK_VISION_03_04_00_00

i run my algorithm on a15

i test CPU usage rate by top .

can CPU usage rate increase？ and make my algorithm fast.

what is the nic 45% idle irq mean?

thanks !

shuai

over 7 years ago

0 Shravan Karthik over 7 years ago

TI__Genius 14650 points

Hi Shuai,

The CPU utilization depends on previous links connected to the A-15 link. If the link connected to the A-15 link sends data periodically and the A15 link is able to process the data before the next burst of data, then the CPU load will be limited. If a while loop is run in the link you will notice the A15 load also spike to 100%.

Regards
Shravan

0 shuai wang32 over 7 years ago in reply to Shravan Karthik

Genius 4770 points

Hi Shravan
i run the program in the main with out link. (sample_app\src\hlos\chains_common\chains_main.c) i do not call usecase.
Regards
shuai

0 Shravan Karthik over 7 years ago in reply to shuai wang32

TI__Genius 14650 points

Hi Shuai,

In an idle state the sample-app.out application runs nothing and thus the A15 load is almost 0% due to the application.
You need to check what modifications you've made (most likely you're polling on the status of some content) which is causing the increased load.

Regards
Shravan

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Linux/TDA2: Why CPU utilization can't be improved anymore