Eu tenho um Ubuntu 16.04 em execução na minha máquina física. Estou tentando definir todo o regulador de escala de cpu para "desempenho".
As versões do pacote instalado são:
# dpkg -l | grep cpufreq
ii cpufrequtils 008-1 amd64 utilities to deal with the cpufreq Linux kernel feature
ii libcpufreq0 008-1 amd64 shared library to deal with the cpufreq Linux kernel feature
quando eu tento o seguinte comando,
# cpufreq-set -r -g performance
Segmentation fault
E strace o comando acima mostra
open("/sys/devices/system/cpu/cpu0/cpufreq/related_cpus", O_RDONLY) = -1 ENOENT (No such file or directory)
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0} ---
+++ killed by SIGSEGV +++
Segmentation fault
Não consigo ver esses locais (/ sys / devices / system / cpu / cpu * / cpufreq). Não sabe o que está faltando.
cpufreq-info diz "nenhum driver cpufreq desconhecido" por quê? qual driver está faltando?
# cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to [email protected], please.
analyzing CPU 0:
no or unknown cpufreq driver is active on this CPU
maximum transition latency: 4294.55 ms.
analyzing CPU 1:
no or unknown cpufreq driver is active on this CPU
maximum transition latency: 4294.55 ms.
analyzing CPU 2:
no or unknown cpufreq driver is active on this CPU
maximum transition latency: 4294.55 ms.
analyzing CPU 3:
no or unknown cpufreq driver is active on this CPU
maximum transition latency: 4294.55 ms.
analyzing CPU 4:
no or unknown cpufreq driver is active on this CPU
maximum transition latency: 4294.55 ms.