From: bugzilla-daemon@kernel.org
To: linux-pm@vger.kernel.org
Subject: [Bug 218759] New: 6.9-rc kernels - with Ryzen 7840HS CPU single core never boosts to max frequency
Date: Mon, 22 Apr 2024 06:50:30 +0000 [thread overview]
Message-ID: <bug-218759-137361@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=218759
Bug ID: 218759
Summary: 6.9-rc kernels - with Ryzen 7840HS CPU single core
never boosts to max frequency
Product: Power Management
Version: 2.5
Hardware: AMD
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: cpufreq
Assignee: linux-pm@vger.kernel.org
Reporter: gahabana@gmail.com
Regression: No
There is a change from 6.8 kernel to 6.9-rc which causes AMD Ryzen 7840HS CPU
not to be able to boost single core CPU.
Geekbench single core score is approx 15% lower (2265 vs 2538). The problem
does not show with kernel 6.8 or 6.7.
It is irrelevant whether kernel command line has amd-pstate-epp driver loaded
as active or passive or guide.
Simple loading of single core with:
cat /dev/zero > /dev/null
Shows both in 'htop' as well as with 'turbostat' that in the case of kernel
4.9-rc5 (as well as previous rcX) that CPU boosts single core only to 4.35GHz
where with previous kernels it goes as high as 5.1GHz.
Here are the outputs of lscpu, and turbopower while running 'cat /dev/zero >
/dev/null' 1st with 6.8 kernel (working ok) and than with 6.9-rc5 kernel which
has a problem
Hint if it helps - lscpu already shows maximum frequency as 4350Mhz with 6.9-rc
kernels
-----
zh@muc:~$ uname -a
Linux muc 6.8.7-060807-generic #202404170934 SMP PREEMPT_DYNAMIC Wed Apr 17
09:46:48 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
zh@muc:~$ sudo lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 48 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 16
On-line CPU(s) list: 0-15
Vendor ID: AuthenticAMD
BIOS Vendor ID: Advanced Micro Devices, Inc.
Model name: AMD Ryzen 7 7840HS w/ Radeon 780M Graphics
BIOS Model name: AMD Ryzen 7 7840HS w/ Radeon 780M Graphics
Unknown CPU @ 3.8GHz
BIOS CPU family: 107
CPU family: 25
Model: 116
Thread(s) per core: 2
Core(s) per socket: 8
Socket(s): 1
Stepping: 1
Frequency boost: enabled
CPU(s) scaling MHz: 32%
CPU max MHz: 6080.0000
CPU min MHz: 400.0000
BogoMIPS: 7586.12
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdp
e1gb rdtscp lm constant_tsc rep_good amd_lbr_v2 nopl
nonstop_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma
cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx
f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3d
nowprefetch osvw ibs skinit wdt tce topoext
perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate
ssbd mba p
erfmon_v2 ibrs ibpb stibp ibrs_enhanced vmmcall
fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a avx512f avx512dq rdseed adx
sma
p avx512ifma clflushopt clwb avx512cd sha_ni avx512bw
avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total c
qm_mbm_local user_shstk avx512_bf16 clzero irperf
xsaveerptr rdpru wbnoinvd cppc arat npt lbrv svm_lock nrip_save tsc_scale
vmcb_cl
ean flushbyasid decodeassists pausefilter pfthreshold
v_vmsave_vmload vgif x2avic v_spec_ctrl vnmi avx512vbmi umip pku ospke avx512
_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg
avx512_vpopcntdq rdpid overflow_recov succor smca flush_l1d
Virtualization features:
Virtualization: AMD-V
Caches (sum of all):
L1d: 256 KiB (8 instances)
L1i: 256 KiB (8 instances)
L2: 8 MiB (8 instances)
L3: 16 MiB (1 instance)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0-15
Vulnerabilities:
Gather data sampling: Not affected
Itlb multihit: Not affected
L1tf: Not affected
Mds: Not affected
Meltdown: Not affected
Mmio stale data: Not affected
Reg file data sampling: Not affected
Retbleed: Not affected
Spec rstack overflow: Vulnerable: Safe RET, no microcode
Spec store bypass: Mitigation; Speculative Store Bypass disabled via
prctl
Spectre v1: Mitigation; usercopy/swapgs barriers and __user
pointer sanitization
Spectre v2: Mitigation; Enhanced / Automatic IBRS; IBPB
conditional; STIBP always-on; RSB filling; PBRSB-eIBRS Not affected; BHI Not
affected
Srbds: Not affected
Tsx async abort: Not affected
zh@muc:~/git/kernel/tools/power/x86/turbostat$ sudo ./turbostat
turbostat version 2024.04.08 - Len Brown <lenb@kernel.org>
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.8.7-060807-generic
root=UUID=dc0bb664-2e43-421d-bd28-96d0332f030c ro amd_pstate=guided iommu=pt
quiet
CPUID(0): AuthenticAMD 0x10 CPUID levels
CPUID(1): family:model:stepping 0x19:74:1 (25:116:1) microcode 0x0
CPUID(0x80000000): max_extended_levels: 0x80000028
CPUID(1): SSE3 MONITOR - - - TSC MSR - HT -
CPUID(6): APERF, No-TURBO, No-DTS, No-PTM, No-HWP, No-HWPnotify, No-HWPwindow,
No-HWPepp, No-HWPpkg, No-EPB
CPUID(7): No-SGX No-Hybrid
cpu0: cpufreq driver: amd-pstate
cpu0: cpufreq governor: ondemand
cpufreq boost: 1
/dev/cpu_dma_latency: 2000000000 usec (default)
current_driver: acpi_idle
current_governor: menu
current_governor_ro: menu
cpu0: POLL: CPUIDLE CORE POLL IDLE
cpu0: C1: ACPI FFH MWAIT 0x0
cpu0: C2: ACPI IOPORT 0x414
cpu0: C3: ACPI IOPORT 0x415
RAPL: 234 sec. Joule Counter Range, at 280 Watts
cpu0: MSR_RAPL_PWR_UNIT: 0x000a1003 (0.125000 Watts, 0.000015 Joules, 0.000977
sec.)
Core CPU Avg_MHz Busy% Bzy_MHz TSC_MHz IPC IRQ POLL C1
C2 C3 POLL% C1% C2% C3% CorWatt PkgWatt
- - 481 10.30 4667 3798 1.83 51969 427 4016
12902 10122 0.01 0.31 5.88 83.78 19.52 28.87
0 0 986 22.42 4401 3793 1.37 11392 162 1214
2794 3079 0.09 1.87 14.58 61.81 3.64 28.82
0 8 44 1.33 3351 3793 0.44 1514 0 27
268 721 0.00 0.03 1.87 96.94
1 1 29 1.31 2190 3793 0.51 1802 0 2
204 1059 0.00 0.00 2.72 96.23 0.23
1 9 16 0.62 2531 3793 0.58 478 0 26
107 157 0.00 0.02 0.78 98.62
2 2 1174 26.61 4413 3793 1.37 16684 235 2542
8383 302 0.12 2.76 65.77 5.07 4.96
2 10 225 4.93 4571 3793 1.06 2451 0 47
394 1020 0.00 0.06 2.21 93.01
3 3 15 0.67 2264 3793 0.45 845 0 13
100 402 0.00 0.04 0.80 98.59 0.18
3 11 15 0.67 2302 3793 0.57 542 0 3
60 277 0.00 0.00 0.83 98.56
4 4 14 0.55 2464 3793 0.47 861 2 13
328 286 0.00 0.01 1.74 97.76 0.24
4 12 39 1.43 2736 3793 0.69 871 0 3
65 433 0.00 0.00 0.66 98.01
5 5 2203 44.20 4984 3793 2.12 4691 25 1
24 367 0.02 0.00 0.20 55.63 9.82
5 13 2825 56.38 5011 3793 2.13 7846 3 99
27 1064 0.00 0.05 0.40 43.21
6 6 17 0.60 2796 3793 0.70 517 0 1
31 264 0.00 0.00 0.30 99.16 0.15
6 14 10 0.44 2263 3793 0.44 440 0 0
38 223 0.00 0.00 0.45 99.16
7 7 59 2.42 2453 3793 1.11 862 0 25
78 383 0.00 0.07 0.55 97.05 0.26
7 15 3 0.12 2161 3793 0.62 173 0 0
1 85 0.00 0.00 0.01 99.88
---------------------
zh@muc:~$ uname -a
Linux muc 6.9.0-rc5-zh-250HZ #3 SMP PREEMPT_DYNAMIC Sun Apr 21 22:11:26 CEST
2024 x86_64 x86_64 x86_64 GNU/Linux
zh@muc:~$ sudo lscpu
[sudo] password for zh:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 48 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 16
On-line CPU(s) list: 0-15
Vendor ID: AuthenticAMD
BIOS Vendor ID: Advanced Micro Devices, Inc.
Model name: AMD Ryzen 7 7840HS w/ Radeon 780M Graphics
BIOS Model name: AMD Ryzen 7 7840HS w/ Radeon 780M Graphics
Unknown CPU @ 3.8GHz
BIOS CPU family: 107
CPU family: 25
Model: 116
Thread(s) per core: 2
Core(s) per socket: 8
Socket(s): 1
Stepping: 1
Frequency boost: enabled
CPU(s) scaling MHz: 22%
CPU max MHz: 4350.0000
CPU min MHz: 400.0000
BogoMIPS: 7586.23
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdp
e1gb rdtscp lm constant_tsc rep_good amd_lbr_v2 nopl
xtopology nonstop_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor
ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes
xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misa
lignsse 3dnowprefetch osvw ibs skinit wdt tce topoext
perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate
ssbd mba perfmon_v2 ibrs ibpb stibp ibrs_enhanced
vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a avx512f avx512dq
rdse
ed adx smap avx512ifma clflushopt clwb avx512cd
sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc
cqm_m
bm_total cqm_mbm_local user_shstk avx512_bf16 clzero
irperf xsaveerptr rdpru wbnoinvd cppc arat npt lbrv svm_lock nrip_save tsc_sca
le vmcb_clean flushbyasid decodeassists pausefilter
pfthreshold v_vmsave_vmload vgif x2avic v_spec_ctrl vnmi avx512vbmi umip pku os
pke avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni
avx512_bitalg avx512_vpopcntdq rdpid overflow_recov succor smca flush_l1d
amd_lbr
_pmc_freeze
Virtualization features:
Virtualization: AMD-V
Caches (sum of all):
L1d: 256 KiB (8 instances)
L1i: 256 KiB (8 instances)
L2: 8 MiB (8 instances)
L3: 16 MiB (1 instance)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0-15
Vulnerabilities:
Gather data sampling: Not affected
Itlb multihit: Not affected
L1tf: Not affected
Mds: Not affected
Meltdown: Not affected
Mmio stale data: Not affected
Reg file data sampling: Not affected
Retbleed: Not affected
Spec rstack overflow: Vulnerable: No microcode
Spec store bypass: Mitigation; Speculative Store Bypass disabled via
prctl
Spectre v1: Mitigation; usercopy/swapgs barriers and __user
pointer sanitization
Spectre v2: Mitigation; Enhanced / Automatic IBRS; IBPB
conditional; STIBP always-on; RSB filling; PBRSB-eIBRS Not affected; BHI Not
affected
Srbds: Not affected
Tsx async abort: Not affected
zh@muc:~/git/kernel/tools/power/x86/turbostat$ sudo ./turbostat
turbostat version 2024.04.08 - Len Brown <lenb@kernel.org>
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.9.0-rc5-zh-250HZ
root=UUID=dc0bb664-2e43-421d-bd28-96d0332f030c ro amd_pstate=guided iommu=pt
quiet
CPUID(0): AuthenticAMD 0x10 CPUID levels
CPUID(1): family:model:stepping 0x19:74:1 (25:116:1) microcode 0x0
CPUID(0x80000000): max_extended_levels: 0x80000028
CPUID(1): SSE3 MONITOR - - - TSC MSR - HT -
CPUID(6): APERF, No-TURBO, No-DTS, No-PTM, No-HWP, No-HWPnotify, No-HWPwindow,
No-HWPepp, No-HWPpkg, No-EPB
CPUID(7): No-SGX No-Hybrid
cpu0: cpufreq driver: amd-pstate
cpu0: cpufreq governor: ondemand
cpufreq boost: 1
/dev/cpu_dma_latency: 2000000000 usec (default)
current_driver: acpi_idle
current_governor: menu
current_governor_ro: menu
cpu0: POLL: CPUIDLE CORE POLL IDLE
cpu0: C1: ACPI FFH MWAIT 0x0
cpu0: C2: ACPI IOPORT 0x414
cpu0: C3: ACPI IOPORT 0x415
RAPL: 234 sec. Joule Counter Range, at 280 Watts
cpu0: MSR_RAPL_PWR_UNIT: 0x000a1003 (0.125000 Watts, 0.000015 Joules, 0.000977
sec.)
Core CPU Avg_MHz Busy% Bzy_MHz TSC_MHz IPC IRQ POLL C1
C2 C3 POLL% C1% C2% C3% CorWatt PkgWatt
- - 292 7.30 4005 3802 2.43 23723 44 656
6574 9594 0.00 0.18 4.10 88.76 4.39 11.77
0 0 52 2.57 2029 3793 0.65 3004 27 175
364 1643 0.00 0.51 3.27 94.01 0.11 11.73
0 8 15 0.75 1991 3793 0.60 946 1 11
212 398 0.00 0.13 1.33 97.89
1 1 37 1.79 2084 3793 1.17 1309 1 26
194 712 0.00 0.25 1.71 96.40 0.60
1 9 645 15.13 4260 3793 2.54 528 0 0
7 140 0.00 0.00 0.04 84.85
2 2 91 3.86 2361 3793 1.02 8182 14 122
4979 2346 0.00 0.18 51.79 44.75 0.37
2 10 13 0.53 2410 3793 0.71 1132 0 21
98 688 0.00 0.14 0.85 98.58
3 3 2243 52.14 4302 3793 2.55 1798 0 30
165 266 0.00 0.56 1.14 46.21 3.02
3 11 1432 33.34 4294 3793 2.56 853 0 8
24 85 0.00 0.10 0.22 66.35
4 4 21 0.98 2191 3793 0.82 820 0 4
66 478 0.00 0.04 0.47 98.61 0.07
4 12 14 0.78 1861 3793 0.88 568 0 8
52 320 0.00 0.00 0.49 98.80
5 5 9 0.47 1932 3793 0.87 416 0 6
34 235 0.00 0.03 0.36 99.17 0.04
5 13 7 0.30 2314 3793 0.67 221 0 10
19 125 0.00 0.03 0.16 99.23
6 6 33 1.62 2024 3793 1.02 1539 0 169
175 796 0.00 0.27 1.92 96.35 0.11
6 14 27 1.40 1896 3793 0.62 1318 1 26
95 764 0.00 0.15 0.81 97.76
7 7 14 0.61 2250 3793 0.72 653 0 25
55 357 0.00 0.35 0.53 98.58 0.05
7 15 10 0.45 2146 3793 0.71 436 0 15
35 241 0.00 0.15 0.23 99.21
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Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-22 6:50 bugzilla-daemon [this message]
2024-04-22 6:54 ` [Bug 218759] 6.9-rc kernels - with Ryzen 7840HS CPU single core never boosts to max frequency 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
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2024-04-25 18:15 ` bugzilla-daemon
2024-04-25 18:49 ` bugzilla-daemon
2024-04-26 0:06 ` bugzilla-daemon
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2024-04-26 8:18 ` bugzilla-daemon
2024-04-26 8:28 ` bugzilla-daemon
2024-04-26 13:59 ` bugzilla-daemon
2024-05-03 8:49 ` bugzilla-daemon
2024-05-03 11:08 ` bugzilla-daemon
2024-05-03 12:24 ` bugzilla-daemon
2024-05-07 8:41 ` bugzilla-daemon
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2024-05-07 19:01 ` bugzilla-daemon
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