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Thread: Ubuntu registers processor at only 800mhz

  1. #1
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    Dec 2010
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    Ubuntu registers processor at only 800mhz

    Hey there -- I'm running ubuntu 11.04 and it seems to say that my processor is only a 800mhz one, I'm using a Gateway P-7811FX currently, any ideas?

  2. #2
    Join Date
    Jul 2007
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    336

    Re: Ubuntu registers processor at only 800mhz

    probably cpu frequency scaling is active. Does it kick up higher when doing something cpu intensive like running glxgears?

  3. #3
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    Dec 2010
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    Re: Ubuntu registers processor at only 800mhz

    no, it simply detects two cores at 800mz and never any more/less. It causes issues when loading up programs due to lack of resources -- especially in wine but the problem is not wine exclusive

  4. #4
    Join Date
    Nov 2008
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    Ubuntu 10.04 Lucid Lynx

    Re: Ubuntu registers processor at only 800mhz

    show us
    Code:
    $cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
    check out this article where I stole said code from:
    http://embraceubuntu.com/2005/11/04/...uency-scaling/

    where are you getting this info from about your cpu bein 800MHz, and what is it supposed to be?
    also show us

    Code:
    $cat /proc/cpuinfo
    ~Conradin~

  5. #5
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    Dec 2010
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    Re: Ubuntu registers processor at only 800mhz

    I have a dual core 2.26ghz processor -- here are the outputs you asked for:
    Frequencies:
    Code:
    2267000 2266000 1600000 800000
    cpuinfo:
    Code:
    processor    : 0
    vendor_id    : GenuineIntel
    cpu family    : 6
    model        : 23
    model name    : Intel(R) Core(TM)2 Duo CPU     P8400  @ 2.26GHz
    stepping    : 6
    cpu MHz        : 800.000
    cache size    : 3072 KB
    physical id    : 0
    siblings    : 2
    core id        : 0
    cpu cores    : 2
    apicid        : 0
    initial apicid    : 0
    fdiv_bug    : no
    hlt_bug        : no
    f00f_bug    : no
    coma_bug    : no
    fpu        : yes
    fpu_exception    : yes
    cpuid level    : 10
    wp        : yes
    flags        : 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 ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm dts tpr_shadow vnmi flexpriority
    bogomips    : 4521.85
    clflush size    : 64
    cache_alignment    : 64
    address sizes    : 36 bits physical, 48 bits virtual
    power management:
    
    processor    : 1
    vendor_id    : GenuineIntel
    cpu family    : 6
    model        : 23
    model name    : Intel(R) Core(TM)2 Duo CPU     P8400  @ 2.26GHz
    stepping    : 6
    cpu MHz        : 800.000
    cache size    : 3072 KB
    physical id    : 0
    siblings    : 2
    core id        : 1
    cpu cores    : 2
    apicid        : 1
    initial apicid    : 1
    fdiv_bug    : no
    hlt_bug        : no
    f00f_bug    : no
    coma_bug    : no
    fpu        : yes
    fpu_exception    : yes
    cpuid level    : 10
    wp        : yes
    flags        : 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 ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm dts tpr_shadow vnmi flexpriority
    bogomips    : 4521.98
    clflush size    : 64
    cache_alignment    : 64
    address sizes    : 36 bits physical, 48 bits virtual
    power management:

  6. #6
    Join Date
    Nov 2005
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    Uppsala, Sweden
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    2,181
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    Ubuntu 12.10 Quantal Quetzal

    Re: Ubuntu registers processor at only 800mhz

    Quote Originally Posted by Nogal View Post
    I have a dual core 2.26ghz processor -- here are the outputs you asked for:
    Nothing out of the ordinary there. It clearly says your cpu is 2.26 GHz, but when you checked it was scaled down to 800 MHz.
    Check what 'cat /proc/cpuinfo' lists when you run something that causes 100% cpu usage.
    If it does not scale up to 2.26 GHz you may have a problem, otherwise it works perfectly normal.

  7. #7
    Join Date
    Oct 2008
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    Cambrils (Tarragona)
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    Hidden!
    Distro
    Ubuntu Development Release

    Re: Ubuntu registers processor at only 800mhz

    you can do the test with a program called cpuburn. Then you can run burnMMX (I believe) in as many terminal windows as cores you have. That will cause 100% cpu load on each core, and then you can check if the processor runs at full speed.
    Busques ajuda? Comença pel wiki de l'equip català!

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