9.0-BETA2 do not support SpeedStep on E5420
Arnaud Lacombe
lacombar at gmail.com
Thu Sep 15 21:12:12 UTC 2011
Hi,
On Thu, Sep 15, 2011 at 4:26 PM, K. Macy <kmacy at freebsd.org> wrote:
> I was just discussing this issues with some others - evidently est(9)
> works fine on both older and newer cpus. I see you're active on lkml -
> does the linux driver work correctly on this machine? i.e. do you know
> that it isn't disabled in the BIOS.
>
Actually, I checked the BIOS after I sent the mail. I not see anything
related to that. Looking again, there is a BIOS entry named "Ratio
CMOS Setting" whose help reads "Sets the ratio between CPU Core Clock
and the FSB. Note: For CedarMill and Prescott Family CPUs, the setup
option only available when Intel SpeedStep technology is disabled.".
However, I'm not sure whether or not the E5420 is either a CedarMill
and Prescott Family CPUs, or maybe the BIOS is just not enabling the
feature.
I did not try to boot a Linux on that platform.
- Arnaud
> Thanks
>
> On Thu, Sep 15, 2011 at 6:20 PM, Arnaud Lacombe <lacombar at gmail.com> wrote:
>> Hi,
>>
>> >From today's -CURRENT:
>>
>> Copyright (c) 1992-2011 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 9.0-BETA2 #17 r225560+be1f8b9: Thu Sep 15 12:05:41 EDT 2011
>> al at shai-hulud:/data/src/freebsd/obj/master/i386.i386/data/src/freebsd/src/sys/GENERIC
>> i386
>> CPU: Intel(R) Xeon(R) CPU E5420 @ 2.50GHz (2493.80-MHz 686-class CPU)
>> Origin = "GenuineIntel" Id = 0x1067a Family = 6 Model = 17 Stepping = 10
>> Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
>> Features2=0x40ce3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1,XSAVE>
>> AMD Features=0x20100000<NX,LM>
>> AMD Features2=0x1<LAHF>
>> TSC: P-state invariant, performance statistics
>> real memory = 6442450944 (6144 MB)
>> avail memory = 3677458432 (3507 MB)
>> Event timer "LAPIC" quality 400
>> ACPI APIC Table: <100509 APIC1714>
>> FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs
>> FreeBSD/SMP: 2 package(s) x 4 core(s)
>> cpu0 (BSP): APIC ID: 0
>> cpu1 (AP): APIC ID: 1
>> cpu2 (AP): APIC ID: 2
>> cpu3 (AP): APIC ID: 3
>> cpu4 (AP): APIC ID: 4
>> cpu5 (AP): APIC ID: 5
>> cpu6 (AP): APIC ID: 6
>> cpu7 (AP): APIC ID: 7
>> [...]
>> est0: failed to enable SpeedStep
>> p4tcc0: <CPU Frequency Thermal Control> on cpu0
>> est1: failed to enable SpeedStep
>> p4tcc1: <CPU Frequency Thermal Control> on cpu1
>> est2: failed to enable SpeedStep
>> p4tcc2: <CPU Frequency Thermal Control> on cpu2
>> est3: failed to enable SpeedStep
>> p4tcc3: <CPU Frequency Thermal Control> on cpu3
>> est4: failed to enable SpeedStep
>> p4tcc4: <CPU Frequency Thermal Control> on cpu4
>> est5: failed to enable SpeedStep
>> p4tcc5: <CPU Frequency Thermal Control> on cpu5
>> est6: failed to enable SpeedStep
>> p4tcc6: <CPU Frequency Thermal Control> on cpu6
>> est7: failed to enable SpeedStep
>> p4tcc7: <CPU Frequency Thermal Control> on cpu7
>>
>> It feels strange that the latest FreeBSD do not support est(4) on a 3
>> years old CPU...
>>
>> Thanks,
>> - Arnaud
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>
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