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muhsinzubeir
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Joined: 29 Sep 2007
Posts: 948
Location: /home/muhsin
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 Posted: Tue Feb 05, 2008 12:56 am Post subject: cpufreq scalling |
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hello..I have setup cpufreq scalling on my machine smoothly but im not satisfied with the frequency range.Are these results normal or I need to do some tweaking to get the frequency range a little bit bigger as i expected?Here are the results and cpu data...
| Code: |
cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to linux@brodo.de, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which need to switch frequency at the same time: 0
hardware limits: 2.00 GHz - 2.33 GHz
available frequency steps: 2.33 GHz, 2.00 GHz
available cpufreq governors: conservative, ondemand, powersave, userspace, performance
current policy: frequency should be within 2.00 GHz and 2.33 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 2.00 GHz.
analyzing CPU 1:
driver: acpi-cpufreq
CPUs which need to switch frequency at the same time: 1
hardware limits: 2.00 GHz - 2.33 GHz
available frequency steps: 2.33 GHz, 2.00 GHz
available cpufreq governors: conservative, ondemand, powersave, userspace, performance
current policy: frequency should be within 2.00 GHz and 2.33 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 2.00 GHz.
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cpu info
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muhsin@gendesktop ~ $ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz
stepping : 11
cpu MHz : 1998.000
cache size : 4096 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
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 syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr lahf_lm
bogomips : 4674.63
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 : 15
model name : Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz
stepping : 11
cpu MHz : 1998.000
cache size : 4096 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
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 syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr lahf_lm
bogomips : 4672.12
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
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~x86
p5k-se
Intel Core 2 Duo
Nvidia GT200
http://www.zanbytes.com |
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Hylocereus
n00b
Joined: 03 Oct 2005
Posts: 24
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| Posted: Tue Feb 05, 2008 10:23 am Post subject: |
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Hallo,
you can't change hardware limits: 2.00 GHz - 2.33 GHz.
Bye |
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jcat
Veteran
Joined: 26 May 2006
Posts: 1337
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| Posted: Tue Feb 05, 2008 1:18 pm Post subject: |
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I find it hard to believe that the actual hardware limit is so useless.
Could this not be a mis-configured kernel?
Cheers,
jcat |
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RazielFMX
l33t
Joined: 23 Apr 2005
Posts: 835
Location: NY, USA
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| Posted: Tue Feb 05, 2008 3:18 pm Post subject: |
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You need to enable the Intel specific speed step support in your kernel (leave the acpi one as well):
For example, I have a pentuim4m on ICH chipset, so I have ACPI_CPUFREQ as a module and have X86_SPEEDSTEP_ICH built in.
| Code: |
cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to linux@brodo.de, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which need to switch frequency at the same time: 0
hardware limits: 600 MHz - 1.40 GHz
available frequency steps: 1.40 GHz, 1.20 GHz, 1000 MHz, 800 MHz, 600 MHz
available cpufreq governors: conservative, ondemand, powersave, userspace, performance
current policy: frequency should be within 600 MHz and 1.40 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 600 MHz.
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I am not anti-systemd; I am pro-choice. If being the latter makes you feel that I am the former, then so be it. |
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Hylocereus
n00b
Joined: 03 Oct 2005
Posts: 24
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| Posted: Tue Feb 05, 2008 4:50 pm Post subject: |
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Hallo,
core2duo processors are very limited in cpufreq scalling.
My E6750 is working between 2Ghz and 2.67Ghz.
In my opion you can not change it, because it based on the cpu-hardware.
Bye |
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muhsinzubeir
l33t
Joined: 29 Sep 2007
Posts: 948
Location: /home/muhsin
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| Posted: Sun Feb 10, 2008 8:37 pm Post subject: |
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thanks guys, it looks like a dead end cant find any other issue in my kernel in case somebody want to take a look at .config see the end of this thread:
Is it possible to manually change these frequency...??? Am i the only who is unsatisfied with frequency range on this processor?....only 2 values damn... 
Edit:
Removed .config
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Intel Core 2 Duo
Nvidia GT200
http://www.zanbytes.com |
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