Ahojte linuxaci
Obraciam sa na vas s prosbou o pomoc...
Uz treti den nad tym sedim a neviem si dat rady:
Mam Intel C2D 2* 1,5 GHz a hladal som nejake programy, ktore vedia menit frekvenciu procesera, aby mi moj notebook vydrzal na ceste co najdlhsie. Vo windowse je soft s nazvom Notebook Hardware Control (NHC), ktory robi presne to co potrebujem a hlavne dokaze vykon CPU zmenit zo 100% na 25% Robi to pridanim nejakych cyklov...
Presiel som asi vsetky fora a skusal cpufreq-info, cpufreqd-get/set....
Ale jediny moj uspech je ten ze sa mi CPU podarilo dotlacit na 1 GHZ . Nuz a ja by som chcel este viac ale neviem ako dalej...
Vypis z cpufreq-info:
driver: centrino
CPUs which need to switch frequency at the same time 0 1
hardware limits: 1000 MHz - 1,5 GHz
available frequency steps 1,5 GHz, 1000 MHz
available cpufreq governors: userspace, conservative, powersave, ondemand, performance
current policy: frequency should be within 1000 MHz and 1000 MHz.
The governor "userspace" may decide whic speed to use within this range.
Current CPU frequency is 1000 MHz (asserted by call to hardware).
Vidim jasne riadok s textom hardware limits...ale vo widlach to funguje a linux je predsa nas a lepsi...len ako na to? :)
Vladi
cpu scaling
"It's More Fun To Compute" - Kraftwerk
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co do skalovania, skus powersave
teda, je to len moja teoria ;)
governor powersave som uz skusal a vsetko co mi da je znizenie CPU frekvencie z 1,5 GHz na 1 GHz ...nepohnem s tym inak
Co mam dva roky stary notas s Intel Celeronom 1,4GHz tak ten mi da na vyber asi 10 moznych znizeni (zacinajuc 175MHz ) a to je k tomu Celeron , nie Centrino.
Alebo zeby C2D nevedeli viac podobrat?
Pozri vypis z cpufreq-info:
driver: centrino
CPUs which need to switch frequency at the same time 0 1
hardware limits: 1000 MHz - 1,5 GHz
available frequency steps 1,5 GHz, 1000 MHz
available cpufreq governors: userspace, conservative, powersave, ondemand, performance
current policy: frequency should be within 1000 MHz and 1000 MHz.
The governor "userspace" may decide whic speed to use within this range.
Current CPU frequency is 1000 MHz (asserted by call to hardware).
samozrejme..ten vypis plati aj pre druhe jadro (CPU)
Alebo ako sa ten subor vola, mali by tam byt vypisane mozne frequencie.
http://www.phoronix.com/scan.php?page=article&item=mobile_penryn&num=3
Tam ma typek acpi-cpufreq a dava mu to ovela viac moznosti na vyber...
Ja mam Core 2 Duo T5500 to je jeden z najnizsich typov
v scaleing_available_frequencies mam toto:
1500000 1000000
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: 996 MHz - 1.66 GHz
available frequency steps: 1.66 GHz, 1.33 GHz, 996 MHz
available cpufreq governors: ondemand, conservative, powersave, userspace, performance
current policy: frequency should be within 996 MHz and 1.66 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 996 MHz (asserted by call to hardware).
analyzing CPU 1:
driver: acpi-cpufreq
CPUs which need to switch frequency at the same time: 1
hardware limits: 996 MHz - 1.66 GHz
available frequency steps: 1.66 GHz, 1.33 GHz, 996 MHz
available cpufreq governors: ondemand, conservative, powersave, userspace, performance
current policy: frequency should be within 996 MHz and 1.66 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 996 MHz (asserted by call to hardware).
...zeby preto ze su urcene pre notebooky?
co vyradi z funkcie 1 jadro, nepodarilo sa mi ale zistit ci a o kolko sa znizi spotreba, co je ale evidentne je znizenie teploty jadra a teda vykon ventilatoru....
uz to len nejak zakomponovat do powermanagementu tak, aby governor ondemand vypinal aj jadro, kedze 80% casu mi bohate staci aby bezalo len jedno....
ak by mal niekto nejaky napad, sem sa.
je to sice na gentoo ked u nich je mozne z 2.5 na 300, tak isto s tym nieco zriesis... prekompiluj jadro, poskusaj lebo mimochodom su rozne systemy podla coho sa to meni jedna z nich je "ondemand" tak ci ju mas nastavenu atd...
a myslim ze Ti to nepojde bez cpufrequtils no nie som si isty...
drzim palce