Re: why does clocked speed show up on arm64 but not on amd64?

Are you sure you did `kldload cpufreq` for your Intel machine?

On Fri, 12 Nov 2021 at 14:58, tech-lists <tech-lists@zyxst.net> wrote:

> Hi,
>
> WHy does the clocked speed *not* show up on intel hardware in sysctl
> dev.cpu ? It shows up in arm64 (ARM Cortex-A72)
>
> intel:
>
> % dmesg | grep 42
> FreeBSD clang version 12.0.1 (git@github.com:llvm/llvm-project.git
> llvmorg-12.0.1-0-gfed41342a82f)
> CPU: Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz (4251.32-MHz K8-class CPU)
>                                                 ^^^^^^^^^^^
> shows in dmesg as above, but not in the dev.cpu sysctl
>
> % sysctl dev.cpu.0 | less
> dev.cpu.0.cx_method: C1/hlt
> dev.cpu.0.cx_usage_counters: 1096037
> dev.cpu.0.cx_usage: 100.00% last 4436us
> dev.cpu.0.cx_lowest: C1
> dev.cpu.0.cx_supported: C1/1/0
> dev.cpu.0.freq_levels: 3400/84000 3200/77169 3100/73848 2900/67388
> 2700/61182 2500/55201 2400/52298 2200/46677 2000/41272 1800/36091
> 1700/34277 1500/29407 1300/24752 1100/20312 1000/18167 800/14031
> dev.cpu.0.freq: 3400
> dev.cpu.0.temperature: 43.0C
> dev.cpu.0.coretemp.throttle_log: 0
> dev.cpu.0.coretemp.tjmax: 100.0C
> dev.cpu.0.coretemp.resolution: 1
> dev.cpu.0.coretemp.delta: 57
> dev.cpu.0.%parent: acpi0
> dev.cpu.0.%pnpinfo: _HID=none _UID=0 _CID=none
> dev.cpu.0.%location: handle=\_PR_.CPU0
> dev.cpu.0.%driver: cpu
> dev.cpu.0.%desc: ACPI CPU
>
> But on the raspberry pi 4, the overclock shows in the sysctl *only*
>
> % sysctl dev.cpu.0
> dev.cpu.0.temperature: 49.1C
> dev.cpu.0.freq_levels: 2100/-1 600/-1
> dev.cpu.0.freq: 2100
> dev.cpu.0.%parent: cpulist0
> dev.cpu.0.%pnpinfo: name=cpu@0 compat=arm,cortex-a72
> dev.cpu.0.%location:
> dev.cpu.0.%driver: cpu
> dev.cpu.0.%desc: Open Firmware CPU
>
> why the difference? The only place I'm expecting the overclock to not be
> present would be on the rpi4, in its dmesg because u-boot hands off to
> the OS, and maybe the cpu speed is missed in the handover.
>
> However, I *am* able to see it here, on intel:
>
> hw.clockrate: 4251
> machdep.tsc_freq: 4251320612
>
> but i'm puzzled why on intel it's not in dev.cpu.0.freq
>
> The rpi4 doesn't have these two oids
>
> thanks,
> --
> J.
>


-- 
Daniel Dettlaff
Versatile Knowledge Systems
verknowsys.com