N2plus overclock not working?

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C1-10P
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N2plus overclock not working?

Post by C1-10P »

Hi,

I am on Ubuntu 20.04.2 LTS aarch64 5.11.8-odroid-arm64 and followed the instructions at https://docs.linuxfactory.or.kr/guides/overclock.html to the letter but I don't think overclock is working.

When I run neofetch for example the cpu speed depicted is still 2.016GHz

I have an application that could benefit from overclock and it still behaves the same with the settings in place.
How can I really test if it is working? Or, am I missing something?
I see for example that

Code: Select all

cpufrequtils/stable,now 5:008-1.1+202102191351~focal arm64 [installed]
libcpufreq0/stable,now 5:008-1.1+202102191351~focal arm64 [installed,automatic]
are installed. Do I need something else?

superpowter77
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Re: N2plus overclock not working?

Post by superpowter77 »

Neofetch will always show the A53 cores speed only. So, if 2.016Ghz is shown, it means your N2+ is working at full speed @ 2.4Ghz on its Quad A72 Cores.

C1-10P
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Re: N2plus overclock not working?

Post by C1-10P »

Something is wrong. I just reverted the changes to stock, rebooted, and I still have neofetch telling me that the board is running at 2.016Ghz. The config files don't seem to have an impact.
Do note that I am using https://docs.linuxfactory.or.kr/guides/overclock.html instructions.
The ones provided by hardkernel https://wiki.odroid.com/odroid-n2/hardware/overclocking don't apply (I guess) as I do not have that config.ini file.

The governor is set to performance - it was like that by default.

C1-10P
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Re: N2plus overclock not working?

Post by C1-10P »

I just figured it out. Overclock does work.
For some reason the A53 cores are running at

Code: Select all

current CPU frequency is 2.02 GHz
It does not matter if the overclock is set or not. They always run at max speed and that is what neofetch is showing I guess. It never changes so it is always showing the same.
If I enable overclock though the speed for CPUs which run at the same hardware frequency: 2 3 4 5 - the A73 cores - changes from

Code: Select all

current CPU frequency is 2.21 GHz
to

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current CPU frequency is 2.40 GHz
That's what cpufreq-info shows so all is well.
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