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Old 2nd January 2005, 12:54 PM
maku Offline
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Join Date: Dec 2004
Posts: 5
Unhappy incorrect cpu speed with non-mobile processor detected


i installed fedora core 3 on and older pII 333 MHz (Klamath) it has 96 mb on ram and a 15gb hdd. it's and old compaq deskpro 4000. i made a clean install, no graphical systems installed. i was going to make a little server out of it. bios detects the cpu speed correctly. but cat /proc/sysinfo shows the following:

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 3
model name : Pentium II (Klamath)
stepping : 4
cpu MHz : 133.237
cache size : 512 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 mtrr pge mca cmov mmx
bogomips : 260.09

and dmesg | grep MHz says:

Detected 133.237 MHz processor.
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx

but it is supposed to be 333 mhz cpu, and it is not a mobile processor or smt

it has a a onboard lan card also, which is capable on 100M FD, but i'm not even able to use all that because at 40%-45% of network load the cpu is used all up and it seems like it really is running on 133 mhz...

does anyone have the same problem, or knows how to fix smt like that?


ps, maybe this helps also:
lspci says:

00:00.0 Host bridge: Intel Corp. 440LX/EX - 82443LX/EX Host bridge (rev 03)
00:01.0 PCI bridge: Intel Corp. 440LX/EX - 82443LX/EX AGP bridge (rev 03)
00:0d.0 VGA compatible controller: Matrox Graphics, Inc. MGA 1064SG [Mystique] (rev 03)
00:10.0 Ethernet controller: Compaq Computer Corporation Netelligent 10/100 TX Embedded UTP (rev 10)
00:14.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 01)
00:14.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
00:14.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01)
00:14.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 01)
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Old 2nd January 2005, 02:19 PM
terr9898 Offline
Registered User
Join Date: Dec 2004
Posts: 194
Have you tried upgrading the kernel? You could have stumbled onto a bug in the stock Core3 kernel.

Btw, is the cpuspeed service enabled?
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Old 2nd January 2005, 02:54 PM
maku Offline
Registered User
Join Date: Dec 2004
Posts: 5
no haven't tried upgrading kernel, but what for the cpuspeed service? it's not a mobile cpu, it doesn't and cannot decrease it's speed. it's 333 mhz for sure, it's even printed on the cpu on when i look in my case. will recompiling the kernel help? i' mean if use the same environment to compile it in where the potential bug already is?

thx for your help : )
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Old 2nd January 2005, 09:15 PM
maku Offline
Registered User
Join Date: Dec 2004
Posts: 5
ok, problem solved. it really was an 300 mhz processor, but was oveclocked to 333, and bios reported it to be 333 also, but as it turned out it was 133 really, so set the jumpers back to normal, 300 mhz operation, and it works fine now and detects the speed correctly

thx for your help anyway
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cpu, detected, incorrect, nonmobile, processor, speed

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