Дорой ночи.
Процессор на ноутбуке при нагрузке сбавляет частоту ниже номинальной, хотя температура 48 и в windows такого не наблюдается.
$ sudo cpupower frequency-info
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 4.0 us
hardware limits: 1.10 GHz - 2.10 GHz
available frequency steps: 2.10 GHz, 1.90 GHz, 1.60 GHz, 1.30 GHz, 1.10 GHz
available cpufreq governors: conservative ondemand userspace powersave performance
current policy: frequency should be within 2.10 GHz and 2.10 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency: 2.10 GHz (asserted by call to hardware)
boost state support:
Supported: yes
Active: yes
Boost States: 3
Total States: 8
Pstate-Pb0: 3300MHz (boost state)
Pstate-Pb1: 2500MHz (boost state)
Pstate-Pb2: 2500MHz (boost state)
Pstate-P0: 2100MHz
Pstate-P1: 1900MHz
Pstate-P2: 1600MHz
Pstate-P3: 1300MHz
Pstate-P4: 1100MHz
В простое:
cpufreq-aperf
CPU Average freq(KHz) Time in C0 Time in Cx C0 percentage
000 2394000 00 sec 010 ms 00 sec 989 ms 01
001 2520000 00 sec 012 ms 00 sec 987 ms 01
002 2856000 00 sec 025 ms 00 sec 974 ms 02
003 2499000 00 sec 035 ms 00 sec 964 ms 03
При выполнении stress --cpu 4 сразу же прыгает на:
CPU Average freq(KHz) Time in C0 Time in Cx C0 percentage
000 1743000 00 sec 987 ms 00 sec 012 ms 98
001 1743000 00 sec 988 ms 00 sec 011 ms 98
002 1743000 00 sec 991 ms 00 sec 008 ms 99
003 1743000 00 sec 995 ms 00 sec 004 ms 99
Температура процессора 48 градусов. В windows такого уменьшения не наблюдается, все ядра при полной загрузке работают на 2100MHz. В целом windows работает шустрее.
В чем может быть проблема?
