SK-AM64B: How to investigate CPU load ratio of tasks and interrupts

Yoshiki

Intellectual 290 points

Part Number: SK-AM64B

Tool/software:

Hello TI team!

I am investigating the CPU load factor.

Environment:
CCS12.7.0
AM64x MCU+ SDK 09.02.01
SK-AM64B

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1392509/faq-how-to-profile-cpu-usage-with-mcu-sdk

I used TaskP_loadGetTotalCpuLoad() to check the CPU load rate for tasks and ISRs.

Next, I would like to examine the load ratio of tasks and interruptions separately.

For interrupts, I would like to know the load rate of I2C, MCAN, and ETHER.
I want to use the i2C sample application i2c_led_blink_interrupt_lld to check the CPU load rate of I2C interrupts.
In MCAN, I want to use mcan_loopback_interrupt application to check the CPU load rate of CAN interrupts.
In ETHER, I want to use the enet_cpsw_loopback application to check the CPU load rate of ETHER send/receive interrupts.

How can I examine the CPU load ratio of tasks and interrupts separately?

https://software-dl.ti.com/mcu-plus-sdk/esd/AM64X/09_02_01_05/exports/docs/api_guide_am64x/group__SDL__R5FCPU__API.html

https://software-dl.ti.com/mcu-plus-sdk/esd/AM64X/09_02_01_05/exports/docs/api_guide_am64x/structSDL__R5FCPU__StaticRegs.html

https://software-dl.ti.com/mcu-plus-sdk/esd/AM64X/09_02_01_05/exports/docs/api_guide_am64x/structSDL__R5FCPU__StaticRegs.html#a37f206e43f9d1e672e7fc59b8e910982

Is ID_ISAR0 the interrupt load factor?
I am not sure.
I don't think it is mentioned in the Technical Reference Manual.

Regards,

Yoshiki Koide

11 months ago

0 Swargam Anil 11 months ago

TI__Mastermind 45936 points

Hello Yoshiki Koide,

I am looking at your queries, and you may expect reply in one or two days.

Regards,

Anil.

0 Swargam Anil 11 months ago in reply to Swargam Anil

TI__Mastermind 45936 points

Hello Yoshiki Koide,

The FAQ below explains how to measure the CPU load .

Please go through it .

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1392509/faq-how-to-profile-cpu-usage-with-mcu-sdk

Regards,

Anil.

0 Yoshiki 11 months ago in reply to Swargam Anil

Intellectual 290 points

Hello Anil,

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1392509/faq-how-to-profile-cpu-usage-with-mcu-sdk

What I would like to know is the load factor for interrupts only.

For interrupts, I would like to know the load rate of I2C, MCAN, and ETHER.
　I want to use the i2C sample application i2c_led_blink_interrupt_lld to check the CPU load rate of I2C interrupts.
　In MCAN, I want to use mcan_loopback_interrupt application to check the CPU load rate of CAN interrupts.
　In ETHER, I want to use the enet_cpsw_loopback application to check the CPU load rate of ETHER send/receive interrupts.

Is there any way to get the CPU load factor for interrupts only?

Regards,

Yoshiki

0 Swargam Anil 11 months ago in reply to Yoshiki

TI__Mastermind 45936 points

Hello Yoshiki Koide,

Actually, there are no APIs and other methods exactly measure the interrupt load without Tasks load.

If you really concerned about the interrupts time please make sure that interrupt time is minimal, and it should not be in the msec .

Measure interrupt execution with the timer .

Regards,

Anil.

Processors

Processors forum

SK-AM64B: How to investigate CPU load ratio of tasks and interrupts