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#1 2021-01-03 17:08

jayfkay
Member
Registered: 2020-12-21
Posts: 6

max CPU frequency - TDEpowersave

I would like to know if it is possible to set max. frequency of CPU for powersave governor in TDEpowersave?

I tried to set it with cpupower, by setting governor and max cpu via systemd, but was overridden at every startup even though i ran the service second to last (service itself ran fine, maybe if i ran it every hour?)

But i didnt remove TDEpowersave, maybe that would help? (i cant test it now)

Thank you.

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#2 2021-01-03 18:15

jayfkay
Member
Registered: 2020-12-21
Posts: 6

Re: max CPU frequency - TDEpowersave

I use Trinity

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#3 2021-01-03 22:15

Dai_trying
Member
From: UK
Registered: 2015-12-14
Posts: 2,993

Re: max CPU frequency - TDEpowersave

Go to TDEpowersave settings and set CPU Frequency policy to performance, this worked for me when I needed to set frequency to maximum on a failing laptop.

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#4 2021-01-03 22:20

jayfkay
Member
Registered: 2020-12-21
Posts: 6

Re: max CPU frequency - TDEpowersave

Laptop works just ok. I would like to lower CPU frequency, so that the fan wouldnt be so loud. 1ghz works like a charm, 1.4 perhaps also

In TDEpowersave, powersave policy maxes it to around 1.8ghz. Fan is too loud.

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#5 2021-01-03 22:41

jayfkay
Member
Registered: 2020-12-21
Posts: 6

Re: max CPU frequency - TDEpowersave

Oh... when i disable intel_pstate in grub, powersave policy in tdepowersave works. But it sets CPU to 800 mhz. Is there a way i can make that 1000?

I gues i had a conflict previously when i tried this with cpupower

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#6 2021-01-04 08:56

Dai_trying
Member
From: UK
Registered: 2015-12-14
Posts: 2,993

Re: max CPU frequency - TDEpowersave

If you type into a terminal (konsole) inxi -C it should tell you the maximum cpu frequency available (amongst other things), I'm not sure how pstates affects this but you could check the results with and without that option to see which is best for your machine.

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#7 2021-01-04 10:09

jayfkay
Member
Registered: 2020-12-21
Posts: 6

Re: max CPU frequency - TDEpowersave

if i have it on pstates, i cant use different governors, only default. If i disable it, it defaults to acpi i think, and i can set another governor and different steps.

Currently with TDEpowersave i have it on powersave governor, it runs on 800mhz, but when there's a cpu intensive task it jumps to 2400. I would like to test performance hit (if any) when i set MAX. cpu frequency to 1500-1600 (i did it with cpupower, so i know its possible). CPU would then work on default 800 and go max to 1600.

I had some issues with cpupower on system reboot (otherwise it worked), thats why i would like to make it work in TDEpowesave.

This shows all available options also -> cpupower frequency-info (after linux-cpupower install)

Last edited by jayfkay (2021-01-04 10:11)

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#8 2021-01-04 16:20

Dai_trying
Member
From: UK
Registered: 2015-12-14
Posts: 2,993

Re: max CPU frequency - TDEpowersave

I have used cpufrequtils in the past, but not sure exactly what options are available. Might be worth investigating though in case it suits your needs, looking at the online man page it should do what you want.

-d --min <FREQ>
    new minimum CPU frequency the governor may select.
-u --max <FREQ>
    new maximum CPU frequency the governor may select.

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