Problem with CPU freq in 7.1-STABLE

Wed Jan 7 03:11:58 PST 2009

Hi,

I'm also unable to get AMD PowerNow working on 7.1 on a Dell Opteron
server (PowerEdge 2970). Whenever I run "powerd", I get:

# powerd -a adp
powerd: lookup freq: No such file or directory

If I look at the sysctl output, the 'freq' stuff seems to be missing
from 'dev.cpu'. I have definitely gone into the server BIOS and
enabled the option (don't remember what it's called now) for frequency
control. I have also checked that 'cpufreq' is included in the kernel
config, but it's a default GENERIC anyway.

# sysctl dev.cpu
dev.cpu.0.%desc: ACPI CPU
dev.cpu.0.%driver: cpu
dev.cpu.0.%location: handle=\_PR_.CPU0
dev.cpu.0.%pnpinfo: _HID=none _UID=0
dev.cpu.0.%parent: acpi0
dev.cpu.0.cx_supported: C1/0
dev.cpu.0.cx_lowest: C1
dev.cpu.0.cx_usage: 100.00%
dev.cpu.1.%desc: ACPI CPU
dev.cpu.1.%driver: cpu
dev.cpu.1.%location: handle=\_PR_.CPU1
dev.cpu.1.%pnpinfo: _HID=none _UID=0
dev.cpu.1.%parent: acpi0
dev.cpu.1.cx_supported: C1/0
dev.cpu.1.cx_lowest: C1
dev.cpu.1.cx_usage: 100.00%
dev.cpu.2.%desc: ACPI CPU
dev.cpu.2.%driver: cpu
dev.cpu.2.%location: handle=\_PR_.CPU2
dev.cpu.2.%pnpinfo: _HID=none _UID=0
dev.cpu.2.%parent: acpi0
dev.cpu.2.cx_supported: C1/0
dev.cpu.2.cx_lowest: C1
dev.cpu.2.cx_usage: 100.00%
dev.cpu.3.%desc: ACPI CPU
dev.cpu.3.%driver: cpu
dev.cpu.3.%location: handle=\_PR_.CPU3
dev.cpu.3.%pnpinfo: _HID=none _UID=0
dev.cpu.3.%parent: acpi0debug.acpi.semaphore_debug: 0
debug.acpi.suspend_bounce: 0
debug.acpi.do_powerstate: 1
debug.acpi.acpi_ca_version: 20070320
debug.acpi.ec.timeout: 750
debug.acpi.ec.polled: 0
debug.acpi.ec.burst: 0
hw.acpi.supported_sleep_state: S4 S5
hw.acpi.power_button_state: S5
hw.acpi.sleep_button_state: S4
hw.acpi.lid_switch_state: NONE
hw.acpi.standby_state: S1
hw.acpi.suspend_state: S3
hw.acpi.sleep_delay: 1
hw.acpi.s4bios: 0
hw.acpi.verbose: 0
hw.acpi.disable_on_reboot: 0
hw.acpi.handle_reboot: 0
hw.acpi.cpu.cx_lowest: C1

dev.cpu.3.cx_supported: C1/0
dev.cpu.3.cx_lowest: C1
dev.cpu.3.cx_usage: 100.00%

# sysctl debug.acpi
debug.acpi.semaphore_debug: 0
debug.acpi.suspend_bounce: 0
debug.acpi.do_powerstate: 1
debug.acpi.acpi_ca_version: 20070320
debug.acpi.ec.timeout: 750
debug.acpi.ec.polled: 0
debug.acpi.ec.burst: 0

# sysctl hw.acpi
hw.acpi.supported_sleep_state: S4 S5
hw.acpi.power_button_state: S5
hw.acpi.sleep_button_state: S4
hw.acpi.lid_switch_state: NONE
hw.acpi.standby_state: S1
hw.acpi.suspend_state: S3
hw.acpi.sleep_delay: 1
hw.acpi.s4bios: 0
hw.acpi.verbose: 0
hw.acpi.disable_on_reboot: 0
hw.acpi.handle_reboot: 0
hw.acpi.cpu.cx_lowest: C1

Here is some relevant dmesg output:
FreeBSD 7.1-RELEASE #2: Tue Jan  6 15:58:36 GMT 2009
    root at xxxx:/usr/obj/usr/src/sys/GENERIC
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Quad-Core AMD Opteron(tm) Processor 2350 (1995.01-MHz K8-class CPU)
  Origin = "AuthenticAMD"  Id = 0x100f23  Stepping = 3
  Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
  Features2=0x802009<SSE3,MON,CX16,<b23>>
  AMD Features=0xee500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM,3DNow!+,3DNow!>
  AMD Features2=0x7ff<LAHF,CMP,SVM,ExtAPIC,CR8,<b5>,<b6>,<b7>,Prefetch,<b9>,<b10>>
  Cores per package: 4
usable memory = 4276158464 (4078 MB)
avail memory  = 4118642688 (3927 MB)
ACPI APIC Table: <DELL   PE_SC3  >
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
 cpu2 (AP): APIC ID:  2
 cpu3 (AP): APIC ID:  3
ioapic0: Changing APIC ID to 4
ioapic1: Changing APIC ID to 5
ioapic2: Changing APIC ID to 6
MADT: Forcing active-low polarity and level trigger for SCI
ioapic0 <Version 1.1> irqs 0-15 on motherboard
ioapic1 <Version 1.1> irqs 32-47 on motherboard
ioapic2 <Version 1.1> irqs 64-79 on motherboard
.
.
.
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
cpu2: <ACPI CPU> on acpi0
cpu3: <ACPI CPU> on acpi0

Any help appreciated.

On Wed, Jan 7, 2009 at 12:53 AM, Pierre-Luc Drouin
<pldrouin at pldrouin.net> wrote:
> Hi,
>
> I noticed a problem with CPU freq in 7.1-STABLE. The maximum frequency
> showed by sysctl is 500Mhz lower than what it should be for my Pentium M
> 2Ghz.
>
> Here is the output from dmesg:
> Copyright (c) 1992-2009 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>       The Regents of the University of California. All rights reserved.
> FreeBSD is a registered trademark of The FreeBSD Foundation.
> FreeBSD 7.1-STABLE #7: Tue Jan  6 16:01:20 EST 2009
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Intel(R) Pentium(R) M processor 2.00GHz (1995.15-MHz 686-class CPU)
>  Origin = "GenuineIntel"  Id = 0x6d8  Stepping = 8
>  Features=0xafe9fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,TM,PBE>
>  Features2=0x180<EST,TM2>
>  AMD Features=0x100000<NX>
>
> and the output from sysctl:
> dev.cpu.0.freq_levels: 1500/-1 1312/-1 1200/-1 1050/-1 1000/-1 875/-1 800/-1
> 700/-1 600/-1 525/-1 450/-1 375/-1 300/-1 225/-1 150/-1 75/-1
> dev.est.0.freq_settings: 1500/-1 1200/-1 1000/-1 800/-1 600/-1
>
> This used to work correctly in 7.0...
>
> Thanks!
> Pierre-Luc Drouin
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