Big Little Cluster Questions
#1
Hello,

I received my first RockPro64 4GB with NAS case, 30mm heat sink, and NAS case fan. Running Armbian Debian Stretch with Ayufan kernel 4.4.167-1213-rockchip-ayufan-g34ae07687fce

This is my first ARM board. When running htop, I would see CPUs 0-3 run at "600 MHz (   .LITTLE)" when idling to "1.42 GHz (   .LITTLE)" at load and CPUs 4-5 run at "600 MHz (big.      )" when idling to "1.80GHz (big.      )" at load. I was playing around with running processes with taskset to set the affinity of processes so that I could  run them only on CPUs 4-5.

Now I'm seeing all CPUs as "1.42 GHz (   .LITTLE)", including 4-5 which I believe should be in the big cluster, not little? The A72 cores are not going up to 1.80GHz at load. I didn't mess with any configuration, only ran "sudo taskset -c 4,5 java -jar ..." to see the JVM run on the A72 cores.

Can someone help me with more information? I've tried rebooting the RockPro64 and the processors did not go back to the original big little clusters or frequencies...

Thanks for any information or help that you can give me! I am pretty new to ARM project boards. I feel like I broke something with taskset...

I'm very new to big.LITTLE clusters so there's probably something that I am misunderstanding. The temperatures have been decently cool, around 34C max, so I don't believe any kind of thermal throttling has gone into effect, especially since I rebooted the server.
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#2
Hi,

I guess you checked those stuff with htop.

I had at some point also that issue, but in my case it was only a misconfiguration of .htoprc try with a fresh one by deleting it.

M
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#3
(06-23-2019, 12:33 PM)mabs Wrote: Hi,

I guess you checked those stuff with htop.

I had at some point also that issue, but in my case it was only a misconfiguration of .htoprc try with a fresh one by deleting it.

M

Huh, so I replaced my htoprc config with the default armbian one and now it looks fine again... very weird. Thank you! Never would have occurred to me to try that.
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