From: bugzilla-daemon@kernel.org
To: linux-pm@vger.kernel.org
Subject: [Bug 218759] 6.9-rc kernels - with Ryzen 7840HS CPU single core never boosts to max frequency
Date: Thu, 25 Apr 2024 18:15:20 +0000 [thread overview]
Message-ID: <bug-218759-137361-R8WCNE8JMg@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-218759-137361@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=218759
--- Comment #9 from Gaha (gahabana@gmail.com) ---
hi , thank you for the suggestions (@Mario),
I've just tried that as well. Single core workloads still do not go above
'basic' speeds. In addition to adding 'amd_prefcore=disable' below i've also
tried adding explicitly to kernel command line amd_pstate various parameters
(active, guided, passive) 'GRUB_CMDLINE_LINUX_DEFAULT="amd_pstate=guided
amd_prefcore=disable iommu=pt quiet " with no change in behaviour
zh@muc:~$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-6.9.0-rc5-zh-250HZ-amdpatches+
root=UUID=dc0bb664-2e43-421d-bd28-96d0332f030c ro amd_prefcore=disable iommu=pt
quiet
zh@muc:~$ uname -a
Linux muc 6.9.0-rc5-zh-250HZ-amdpatches+ #5 SMP PREEMPT_DYNAMIC Thu Apr 25
11:45:21 CEST 2024 x86_64 x86_64 x86_64 GNU/Linux
... (In 2nd session am running 'cat /dev/zero >/dev/null')
zh@muc:~$ lscpu -ae
CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ MHZ
0 0 0 0 0:0:0:0 yes 4350.0000 400.0000 1815.3290
1 0 0 1 1:1:1:0 yes 4350.0000 400.0000 1724.5240
2 0 0 2 2:2:2:0 yes 4350.0000 400.0000 2156.9199
3 0 0 3 3:3:3:0 yes 4350.0000 400.0000 400.0000
4 0 0 4 4:4:4:0 yes 4350.0000 400.0000 400.0000
5 0 0 5 5:5:5:0 yes 4350.0000 400.0000 2050.2410
6 0 0 6 6:6:6:0 yes 4350.0000 400.0000 400.0000
7 0 0 7 7:7:7:0 yes 4350.0000 400.0000 400.0000
8 0 0 0 0:0:0:0 yes 4350.0000 400.0000 400.0000
9 0 0 1 1:1:1:0 yes 4350.0000 400.0000 400.0000
10 0 0 2 2:2:2:0 yes 4350.0000 400.0000 400.0000
11 0 0 3 3:3:3:0 yes 4350.0000 400.0000 400.0000
12 0 0 4 4:4:4:0 yes 4350.0000 400.0000 400.0000
13 0 0 5 5:5:5:0 yes 4350.0000 400.0000 400.0000
14 0 0 6 6:6:6:0 yes 4350.0000 400.0000 4315.7319
15 0 0 7 7:7:7:0 yes 4350.0000 400.0000 400.0000
I hope this helps ?
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next prev parent reply other threads:[~2024-04-25 18:15 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-22 6:50 [Bug 218759] New: 6.9-rc kernels - with Ryzen 7840HS CPU single core never boosts to max frequency bugzilla-daemon
2024-04-22 6:54 ` [Bug 218759] " bugzilla-daemon
2024-04-22 8:12 ` bugzilla-daemon
2024-04-22 8:13 ` bugzilla-daemon
2024-04-22 10:15 ` bugzilla-daemon
2024-04-24 23:44 ` bugzilla-daemon
2024-04-25 0:39 ` bugzilla-daemon
2024-04-25 10:12 ` bugzilla-daemon
2024-04-25 15:21 ` bugzilla-daemon
2024-04-25 16:21 ` bugzilla-daemon
2024-04-25 18:15 ` bugzilla-daemon [this message]
2024-04-25 18:49 ` bugzilla-daemon
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