Re: [PLUG] Power consumption difference

[Martin Cracauer via plug <plug@lists.phillylinux.org>]

K.S. Bhaskar via plug wrote on Wed, Mar 26, 2025 at 12:07:50PM -0400: 
> My laptop can boot either Manjaro Linux or EndeavourOS, both Arch Linux
> derivatives and both patched reasonably recently (within the last week).
> Manjaro has a 6.12.19-1-MANJARO kernel with the Plasma desktop, and
> EndeavourOS has a 6.13.7-arch1-1 kernel with the Cinnamon desktop. Both
> have the power profile set to Balanced. Interestingly, when running on
> battery, no external devices connected, Bluetooth and wifi turned on, I
> seem to get 1-2 hours when I run Manjaro and 2-3 hours when I run
> EndeavourOS. In both cases, I am just doing light work like e-mail, reading
> online documentation, etc.; nothing like compiling, or playing games. I
> just noticed this difference recently and have not done formal measurement.
> I wonder whether the difference is the kernel, the desktop, or something
> else (like random variation into which I am trying to read something
> meaningful).

First thing is to use top(1) to find out whether anything takes CPU.

I think the specifics of "balanced" power plans are a matter of taste
for each distribution.  You probably get more comparable results with
"performance".

A powermeter is always a good investment.

What kind of laptop? Does it have Optimus (2 graphics chips that it
can switch between)?

Martin
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Martin Cracauer <cracauer@cons.org>   http://www.cons.org/cracauer/
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