[FEATURE] P & E-Core differentiation for big.LITTLE CPUs

[the-hotmann]

I use an Intel NUC13 with an i7-1360p which does have 4 P-Cores and 8 E-Cores.
The Problem is, that I can not see/tell which of the 16 'cores' htop shows me, is what?
8 Cores should be from the 4 P-Cores (as they have hyperthreading)
the other
8 Cores should be from the 8 E-Cores (as they are singlethreaded)

But I cant tell which are which.

I use Debian SID, so I have the newest htop version:

# htop --version
htop 3.2.2

[leahneukirchen]

The display part is not a duplicate I think.

[BenBE]

See #879; but there's a bit more. I moved most of the BIG.little and other mixed computng architecture related issues over to milestone 3.4.0.

[fasterit]

This could be implemented with color-coding the CPUs or prefixing "P" / "E" or other identifiers. No implementation yet, so moved to the 3.5.0 milestone.

[Pixelplanet]

just a note as this was moved to 3.6 and will probably still take months to be implemented.
We are already at the point where we have P cores E cores and low energy E cores so if this is ever actually implemented it should be done for more then just what existed in 2023.

[BenBE]

I moved this to 3.6 when I did a quick cleanup of things that were unlikely to get finished as part of the upcoming 3.5 release. With some work on CPU topology handling recently merged, part of what is needed for this might already be available; at least from an infrastructure perspective. Having this in 3.6 is no endorsement that it will be ready; especially as AFAICT there's no active PR that implements this feature.

[leahneukirchen]

If anyone wants to give this a try, on my i7-1355U (2 performance cores (+ SMT), 8 efficient cores)
I see:

% cat /sys/devices/cpu_core/cpus /sys/devices/cpu_atom/cpus
0-3
4-11

[BenBE]

@leahneukirchen Any of this information visible in /proc/cpuinfo by chance?

[leahneukirchen]

AFAICT no