CPU speed not reported correctly

Michael W. Oliver michael at gargantuan.com
Wed Dec 29 13:26:16 PST 2004


Hello again folks.  Here is the head of my `dmesg -a':


Copyright (c) 1992-2004 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 6.0-CURRENT #3: Wed Dec 29 09:10:47 EST 2004
    mwoliver at gambit.gargantuan.com:/usr/obj/usr/src/sys/GAMBIT
WARNING: debug.mpsafenet forced to 0 as ipsec requires Giant
WARNING: MPSAFE network stack disabled, expect reduced performance.
Preloaded elf kernel "/boot/kernel/kernel" at 0xffffffff8091e000.
Preloaded elf obj module "/boot/kernel/sound.ko" at 0xffffffff8091e1a8.
Preloaded elf obj module "/boot/kernel/snd_via8233.ko" at 0xffffffff8091e7d0.
Preloaded acpi_dsdt "/boot/DSDT.aml" at 0xffffffff8091ed00.
Preloaded elf obj module "/boot/kernel/ng_ubt.ko" at 0xffffffff8091ed50.
Preloaded elf obj module "/boot/kernel/netgraph.ko" at 0xffffffff8091f278.
Preloaded elf obj module "/boot/kernel/radeon.ko" at 0xffffffff8091f8a8.
Preloaded elf obj module "/boot/kernel/agp.ko" at 0xffffffff8091fe50.
ACPI APIC Table: <PTLTD          APIC  >
Calibrating clock(s) ... i8254 clock: 1193174 Hz
CLK_USE_I8254_CALIBRATION not specified - using default frequency
Timecounter "i8254" frequency 1193182 Hz quality 0
Calibrating TSC clock ... TSC clock: 801825045 Hz
CPU: AMD Athlon(tm) 64 Processor 3400+ (801.83-MHz K8-class CPU)
  Origin = "AuthenticAMD"  Id = 0xf4a  Stepping = 10
  Features=0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
  AMD Features=0xe0500800<SYSCALL,NX,MMX+,LM,3DNow+,3DNow>
L1 2MB data TLB: 8 entries, fully associative
L1 2MB instruction TLB: 8 entries, fully associative
L1 4KB data TLB: 32 entries, fully associative
L1 4KB instruction TLB: 32 entries, fully associative
L1 data cache: 64 kbytes, 64 bytes/line, 1 lines/tag, 2-way associative
L1 instruction cache: 64 kbytes, 64 bytes/line, 1 lines/tag, 2-way associative
L2 2MB unified TLB: 0 entries, disabled/not present
L2 4KB data TLB: 512 entries, 4-way associative
L2 4KB instruction TLB: 512 entries, 4-way associative
L2 unified cache: 1024 kbytes, 64 bytes/line, 1 lines/tag, 16-way associative


OK, here is my question:  Why is the CPU speed reported as 801.83MHz?
Is there something really wrong with my setup here?  I have this machine
configured to dual boot with the other OS being the x64 version of XP,
and it reports a 2.2GHz CPU (for what it's worth...).

Is this just some cosmetic thing, or is my CPU really running that slow?

$ uname -a
FreeBSD gambit.gargantuan.com 6.0-CURRENT FreeBSD 6.0-CURRENT #3: Wed
Dec 29 09:10:47 EST 2004
mwoliver at gambit.gargantuan.com:/usr/obj/usr/src/sys/GAMBIT  amd64

Thanks.

-- 
Michael W. Oliver
[see complete headers for contact information]

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