Originally posted by Kjell
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AMD Posts 11th Iteration Of P-State Preferred Core Patches For Linux
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Originally posted by Kjell View Post
It was even easier with Arch Linux's PKGBUILD
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Originally posted by reba View Post
On my 59xx Notebook I have all options available but the lowest power usage is on 'passive' (6 Watt) compared to 'active'/'guided' (around 10 Watt). That's significant.
Thank you!
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Originally posted by cytomax55 View Post
Ty, That's a little above my pay grade I have no idea I'll just wait till the kernel comes out Thank you for letting me know
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Is there a chapter in the AMD reference manuals about how to talk to the processor about preferred cores or is it all done ad-hoc by AMD insiders?
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One thing I don't understand about preferred core:
So the scheduler listens to the processor for recommendations about which core to use.
How does that work for different kinds of threads? Obviously some threads would want other cores than other threads. Does the scheduler tell the processor what kind of thread is incoming? Does the processor maintain state about what thread did what in the past?
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Originally posted by skeevy420 View Post
It's enabled by default on CachyOS and can be checked at
❯cat /sys/devices/system/cpu/amd_pstate/prefcore
enabled
That's using amd_pstate=guided in the command line with schedutil as the governor.
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