Linux 6.5 Now Defaults To AMD P-State "Active" EPP For Modern Ryzen Systems

[phoronix]

Phoronix: Linux 6.5 Now Defaults To AMD P-State "Active" EPP For Modern Ryzen Systems

The power management and ACPI feature changes have been merged for the in-development Linux 6.5 kernel. As usual, it's most interesting on the Intel and AMD fronts with the power management changes for this kernel that will be released as stable in August...

https://www.phoronix.com/news/Linux-6.5-Power-Management

[Danny3]

That's great!
One thing less to configure after the OS install / reinstall.
But when will the MGLRU be also enabled by default?

[cytomax55]

Is there somewhere I can read more about this?
Is this just going to help optimize power usage or improve performance or all the above etc?

[nuetzel]

Michael

Will we see a Linux kernel evolution comparison, again?

[pb72]

Is there somewhere I can read more about this?
Is this just going to help optimize power usage or improve performance or all the above etc?

Should help with all of the above.

[1] https://docs.kernel.org/admin-guide/pm/amd-pstate.html
[2] https://lwn.net/ml/linux-kernel/[email protected]/
[3] https://lwn.net/ml/linux-kernel/[email protected]/
[4] https://lwn.net/ml/linux-kernel/[email protected]/
[5] https://wiki.archlinux.org/title/CPU_frequency_scaling (Optional read)

[mathieu.cossette]

August... such a cooooool month! Long live AMD, that's it now everyone knows my favorite tech company! August, it's not that far away Ryzen boys and girls !

6.5 is gonna be such a great kernel for efficiency! Don't be sad Intel people... we like you ... here hehe

[mathieu.cossette]

"There is also the ACPI pull that adds various ACPI backlight quirks" oh yeah! Just this quirck is enough for beginners to stop adopting a different os than Windows

[kiffmet]

I've been using guided mode + schedutil on a 5900X for months now with great results and good minimum frametimes in games.

[nuetzel]

I've been using guided mode + schedutil on a 5900X for months now with great results and good minimum frametimes in games.

Any thoughts - 5900X or 5800X3D for gaming?
I'll want to buy an update for our sons system.
Maybe even 5950X

[skeevy420]

Any thoughts - 5900X or 5800X3D for gaming?
I'll want to buy an update for our sons system.
Maybe even 5950X

5800X3D without hesitation. Outside of niche cases and maybe emulation, I don't think any game will utilize all the threads of a 5900X or better. 8 cores is the best you need for gaming, after that it's more about IPC, the amount of cache, the amount of RAM, your storage medium, and your graphics card.

To put core counts into perspective, my system, a low-end 6 core 4650G Zen 2 APU with 32GB DDR4 3733 and a 6700 XT will push practically any game at 1440p60 on Linux off a 3 disk HDD ZFS raid. You'll be just spiffy with a 5800X3D.

If it wouldn't have been for the deal of my life on a Pentax KF I'd have bought the 5800X3D last week. I couldn't pass on a brand new $850 camera marked down to $450. That was basically my CPU and heatsync upgrade budget.