Hi Steev,
That's interesting what you've done with Rockchip RK3399.
I would like to reproduce your experiment on my RockPI 4B v1.3.
Could you tell me how you to add this boost frequency that you have
mentioned in some previous emails?
I want to have similar setup to yours and I'll check all the subsystems
involved in the decision making process for triggering this boost freq.
On 11/8/21 11:21 PM, Steev Klimaszewski wrote:
Hi Thara,
Hi Steev,
IIUC, PineBook Pro has Rockchip RK3399 which has 2 Cortex A-72 and 4
Cortex A-52 where as C630 has Qualcomm sdm845 which has 4 Cortex A-75
and 4 Cortex A-55. Task placements and subsequently cpu load will be
different for both the platforms. With the same workload, I will
expect Rockchip to system to be more loaded than sdm845. Having said
that, what cpu-freq governor are you using on both the systems.
I'm using sched-util on both of the systems.
I've tried a number of different ways of forcing builds only on the A-75
cores, and I simply cannot get the load to be "enough" to kick in the
boost frequency.
An example being
git clone https://github.com/zellij-org/zellij.git
cd zellij
taskset --cpu-list 4-7 cargo build --release
git clean -fdx
taskset --cpu-list 6-7 cargo build --release
Thanks for the pointers, I'll give it a try when I sort out this
Rockchip boost setup.
On my C630, it never goes higher than 85C with the 4 cores being used,
and with 2, it never goes about 65C and I do not get any 2.96GHz. It's
currently sitting at "6" in the time_in_state for 2965800.
--steev
Thank you for your support.
Regards,
Lukasz
