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pygoscelis
Guru
Joined: 07 Jun 2003
Posts: 409
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 Posted: Fri Sep 07, 2012 4:05 pm Post subject: CPU speed [solved, kinda] |
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I have a question about the CPU clock speed.
| Code: | box$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Pentium(R) Dual CPU E2140 @ 1.60GHz
stepping : 13
cpu MHz : 800.000
...
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(yes the box is fairly old)
| Code: | box$ cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
800000
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Is this normal? Why the CPU is said to be @1.6GHz, but the maximum frequency is only 800 MHz?
Update I have found that the acpi-cpufreq driver does not work with my system (misreports the frequencies). I have disabled it and enabled p4-clockmod, and now I have cpuinfo_max_freq @1600000 as it should be.
Last edited by pygoscelis on Fri Sep 07, 2012 6:17 pm; edited 3 times in total |
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BillWho
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Joined: 03 Mar 2012
Posts: 1600
Location: US
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| Posted: Fri Sep 07, 2012 5:56 pm Post subject: |
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pygoscelis,
Maybe cpu governor 
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pygoscelis
Guru
Joined: 07 Jun 2003
Posts: 409
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| Posted: Fri Sep 07, 2012 6:11 pm Post subject: |
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@BillWho,
the governor (any governor) is able to set the frequency no higher than cpuinfo_max_freq. Anyway I have the performance governor set by default, it should set the frequency to the max in any case. |
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