Dotaz: polofunkcni CPUFREQ?

[baCZa]

Dobry den mam prosbu netusite nekdo cim muze byt to, ze kdyz nastavim ve cpufreq frekvenci, tak se v /proc/cpuinfo nezobrazi?

$ cpufreq-info 
cpufrequtils 0.3: cpufreq-info (C) Dominik Brodowski 2004
Report errors and bugs to linux@brodo.de, please.
analyzing CPU 0:
  driver: centrino
  CPUs which need to switch frequency at the same time: 0
  hardware limits: 600 MHz - 1.50 GHz
  available frequency steps: 600 MHz, 800 MHz, 1000 MHz, 1.20 GHz, 1.50 GHz
  available cpufreq governors: ondemand, powersave, userspace, performance
  current policy: frequency should be within 600 MHz and 1.50 GHz.
                  The governor "userspace" may decide which speed to use
                  within this range.
  current CPU frequency is 1.50 GHz (asserted by call to hardware).

Zde jak vidno bezi na 1500MHz.. Nyni pomoci utilitky cpuspeedy dam minimalni frekvenci

$ cpuspeedy min
cpuspeedy: CPU speed is now 600 Mhz (40%) temperature is 55 C

$ cpufreq-info 
cpufrequtils 0.3: cpufreq-info (C) Dominik Brodowski 2004
Report errors and bugs to linux@brodo.de, please.
analyzing CPU 0:
  driver: centrino
  CPUs which need to switch frequency at the same time: 0
  hardware limits: 600 MHz - 1.50 GHz
  available frequency steps: 600 MHz, 800 MHz, 1000 MHz, 1.20 GHz, 1.50 GHz
  available cpufreq governors: ondemand, powersave, userspace, performance
  current policy: frequency should be within 600 MHz and 1.50 GHz.
                  The governor "userspace" may decide which speed to use
                  within this range.
  current CPU frequency is 600 MHz (asserted by call to hardware).

Vypada to ze to funguje, mozna jsem zaznamenal i trochu ochlazeni cpu, ale co me vrta hlavou je todle:

$ cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 13
model name      : Intel(R) Pentium(R) M processor 1.50GHz
stepping        : 6
cpu MHz         : 1498.782
cache size      : 2048 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 mce cx8 sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe est tm2
bogomips        : 1186.20

Urcite si pamatuju ze jsem videl na tom samem notebooku hodnotu "cpu MHz : 1498.782", ktera se menila, takze to asi nebude nejakej pevnej udaj...

Predem Vam vsem dekuji za pripadne navrhy.

Odpovědi

[CIJOML]

Jestli ti bezi ondemand governon, tak se ti to asi samo opet preklopilo do maximalni frekvence.

[Michal Čihař]

Ta věc se jmenuje governor . A cpufreq-info píše, že je nastavený userspace.

[CIJOML]

tak to je stejny pripad, jen mu to muze prepnout nejaky cpufreq demon

[Michal Čihař]

Jaký máš kernel?

[baCZa]

gentoo-sources 2.6.12-r10

[Michal Čihař]

Tak pokud nemá Gentoo nějaký obskurní patche, tak v tom to není.

Neběží ti tam ještě něco, co by nastavovalo frekvenci? powernowd. cpufreqd, powersaved, a co já vím ještě jaký démoni to dělají.

[dedeseq]

takze mam 1,5 centrino banias, intel 855 na gentoo 2005.1 nainstalovane: cpufreqd-1.2.3.tar.gz, cpufrequtils-0.3.tar.bz2 +nepouzivam cpuspeedy! ------

v jadre mam tusim

Default CPUFreq governor (userspace) ---

* 'performance' governor

* 'powersave' governor

--- 'userspace' governor for userspace frequency scaling

* 'ondemand' cpufreq policy governor

robilo mi to podobne problems, a ak si dobre pamatam, tak som robil zmenu v /etc/cpufreqd.conf kde som mu napisal, akeho gevernora chcem pouzivat defaultne ... tj. nie performance ale powersave ...sa tam pohraj s tym a funguje to super ..

[cartman]

A preco by to malo byt /proc/cpuinfo ?! Tam su predsa technicke parametre procesora. Informacie o zmene freqvencie CPU su v /sys/devices/system/cpu/cpu0/cpufreq. Pre blizsie informacie si treba precitat dokumentaciu.

[Michal Čihař]

Protože to tam obvykle je

$ grep -E '(model name|MHz)' /proc/cpuinfo 
model name      : Intel(R) Pentium(R) M processor 1500MHz
cpu MHz         : 1496.682
$ grep -E '(model name|MHz)' /proc/cpuinfo 
model name      : Intel(R) Pentium(R) M processor 1500MHz
cpu MHz         : 1396.903
$ grep -E '(model name|MHz)' /proc/cpuinfo 
model name      : Intel(R) Pentium(R) M processor 1500MHz
cpu MHz         : 1197.345
$ grep -E '(model name|MHz)' /proc/cpuinfo 
model name      : Intel(R) Pentium(R) M processor 1500MHz
cpu MHz         : 997.788
$ grep -E '(model name|MHz)' /proc/cpuinfo 
model name      : Intel(R) Pentium(R) M processor 1500MHz
cpu MHz         : 798.230

[cartman]

Fakt... zmenil som frekvenciu a ono to tam je... ospravedlnujem sa.

[Ondroid]

Mě se tam teda nastavená frekvence CPU zobrazuje:

gentoo@notes ~ $ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 13
model name : Intel(R) Pentium(R) M processor 1.60GHz
stepping : 6
cpu MHz : 1000.206
cache size : 2048 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 mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe est tm2
bogomips : 2001.82