Bug #6269

Max CPU Speed

Added by Bharat Swamy almost 6 years ago. Updated about 3 years ago.

Closed: Third party to resolve
No priority
Alexander Motin
Target version:
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System does not consider/list the Turbo CPU speed on a AMD C60 APU. CPU clocks max at 1000Mhz, however the CPU is capable upto 1330Mhz.


#1 Updated by Alexander Motin almost 6 years ago

Could you please give more info, for example output of `sysctl dev.cpu.0`? I see that /etc/rc.conf should already include performance_cpu_freq="HIGH" option to enable maximal of available frequencies.

BTW, at least for Intel CPUs, turbo frequencies are not shown anywhere explicitly, CPU does them under the hood, and all that user sees is choosing between 2400MHz and 2401MHz, where last is with the TurboBoost enabled and the first is without.

#2 Updated by Bharat Swamy almost 6 years ago

Hi Alex,

Please find below the requested info. Note that the freq_levels does not include 1330 as an option. Earlier, I guess two releases back I noticed that the CPU jumped to 1330 and shows up in the reporting as 133% Max.

dev.cpu.0.%desc: ACPI CPU
dev.cpu.0.%driver: cpu
dev.cpu.0.%location: handle=\_PR_.P000
dev.cpu.0.%pnpinfo: _HID=none _UID=0
dev.cpu.0.%parent: acpi0
dev.cpu.0.freq: 875
dev.cpu.0.freq_levels: 1000/-1 875/-1 750/-1 625/-1 500/-1 375/-1 250/-1 125/-1
dev.cpu.0.cx_supported: C1/1/0 C2/2/100
dev.cpu.0.cx_lowest: C1
dev.cpu.0.cx_usage: 100.00% 0.00% last 510us

#3 Updated by Jordan Hubbard almost 6 years ago

  • Assignee set to Alexander Motin
  • Target version set to 49

#4 Updated by Jordan Hubbard almost 6 years ago

  • Status changed from Unscreened to Closed: Third party to resolve

This is an upstream FreeBSD issue. Nothing for us to fix (other than suggest an Intel upgrade).

#5 Updated by Alexander Motin almost 6 years ago

I would guess that something is wrong with frequency info reporting in the ACPI BIOS. Try to update board's BIOS and make sure that you have Cool&Quiet (or how else it is called now) is enabled in BIOS settings.

#6 Avatar?id=14398&size=24x24 Updated by Kris Moore about 3 years ago

  • Category set to 129
  • Target version changed from 49 to N/A

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