DVFS is concept of tuning voltage and frequency of CPU processor dynamically as per workload scenarios.
In my knowledge, cpufreq is used to tune CPU frequency dynamically depending on selected governors.
I need some guidance in this context for Ubuntu 18.04.

Why ondemand and conservative governors are not listed to /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors? Can it be avail using any configuration? How?
Why scaling_Available_Frequencies file not present to cpufreq folder?
I need set of available CPU frequency and its associated voltage
How to tune voltage for DVFS assignment?

I would think that things like this are hardware dependant.
In other words, it isn't available on all hardware.
In other words, what hardware are you using.

Also: why do you think you need to mess with this? Don't you trust that the hardware and kernel developers already try to get the most out of your CPU?

Here's guidance: You're wanting to mess with things that can have very unwanted effects on your cpu an that your cpu may not benefit from. Don't. There's no low hanging fruit left for you to pick and transform your pc.

Rule #1:"If it ain't broke, don't fix it!"

2 members found this post helpful.

This is pretty close to my Rule #1: "If it ain't broke, take it apart and figure out why."

Then you deserve what you get in the way of side effects, because you're the problem. The sad fact is that there's an attrition rate to taking things apart, however good you are at what you do. In the case of electronics generally and cpu speed in particular, your rule #1 is a recipe is a recipe for disaster.

1 members found this post helpful.

lol, you need to chill out, comrade.

Taking things apart to learn why they work is incredibly important. Ya, it winds up breaking stuff. But then you get the added benefit of knowing the cause of the symptoms you see when the system is broke. Learning is not without risk.

@T_Versicolor
If you do not have anything positive to post then please refrain from using vulgarity when posting. Personal attacks will not be tolerated.

Please consider rereading LQ Rules

business_kid's reply was totally chill, only opposed to your opinion.
So I guess it was really your own inner reaction that wasn't ... chill.

I see this quite often:
"I'm getting real angry now but I'm out of arguments and heck if I'll show my anger, so I'll just accuse the other of being angry."

1 members found this post helpful.

I literally made arguments in my post but thanks for playing.

@everyone

Get this thread back on topic;

The OP has started three different threads around this subject (about which, I admit, I know very little), and has received apparently helpful answers in the other two. I refer them to the other threads for some help.

(Please note that the OP has not returned to this thread as of this writing)