Bug 60922 - Misreported CPU speed
Misreported CPU speed
Status: CLOSED NOTABUG
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
7.3
i386 Linux
medium Severity medium
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Assigned To: Arjan van de Ven
Brian Brock
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2002-03-08 22:01 EST by Frank Sweetser
Modified: 2007-04-18 12:40 EDT (History)
0 users

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Doc Type: Bug Fix
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Last Closed: 2002-03-11 05:40:13 EST
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Description Frank Sweetser 2002-03-08 22:01:18 EST
HP Omnibook 6000 600Mhz PIII.  Kernel 2.4.18-0.1 misdetects clock speed as 300Mhz.

processor
: 0
vendor_id
: GenuineIntel
cpu family	: 6
model
	: 8
model name	: Pentium III (Coppermine)
stepping
: 3
cpu MHz		: 309.245
cache size	: 256 KB
fdiv_bug
: no
hlt_bug
	: no
f00f_bug
: no
coma_bug
: no
fpu
	: yes
fpu_exception
: yes
cpuid level	: 2
wp
	: yes
flags
	: fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips
: 655.36
Comment 1 Arjan van de Ven 2002-03-11 05:40:08 EST
Did you have the power connected when you booted ?
Several modern laptops run at half speed when you boot on battery
Comment 2 Frank Sweetser 2002-03-13 14:22:04 EST
Curious - the power was plugged in at the time, but rebooting fixed it - it must
have stayed at 1/2 speed from when it was powered up.
Comment 3 Arjan van de Ven 2002-03-13 14:26:16 EST
Not per se. the calibration/measurement is done during boot (it's a "loop in a
small loop until the timer fires" so it costs cpu time -> not done every hour ;)
.... so maybe the actual Mhz changed just the kernel only shows the boot time value

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