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Date:      Fri, 29 Sep 2017 21:38:59 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 218262] [hwpstate] does not set overclocked frequency on AMD Ryzen CPU
Message-ID:  <bug-218262-8-ZGMhdKKMF5@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-218262-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-218262-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D218262

--- Comment #6 from Greg V <greg@unrelenting.technology> ---
Created attachment 186809
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D186809&action=
=3Dedit
zenstate.c

Okay, it's definitely overclocked, just ran Cinebench R15 under Wine, got 1=
755
points. (same 3.9GHz clock in Windows 10 gives me ~1715, 3.0GHz is
significantly less).

Here's the interesting bit from the AMD docs though: "This field provides t=
he=20
frequency component of the current non-boosted P-state of the core".

I guess "non-boosted" means "not ever returning P0"?!

How is it providing "the frequency component" if it returns the number of t=
he
P-state?! This documentation makes ZERO sense.

Also, here's a tiny program that sets P-state 0 from userspace via cpuctl, =
it's
easier to experiment with this than recompiling the kernel and stuff.

--=20
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