Hallo Zusammen,
ich nutze Debian Sid und frage mich, ob es normal es, dass meine CPU (i5-8250U) im Akkubetrieb nicht unter 800MHz taktet? Habt ihr mit dem t480s unter Linux ähnliche Erfahrungen? Der Hintergrund ist, dass ich das Maximum an Akkuleistung/Optimierung erreichen möchte.
Eigentlich sollte doch der minimale Takt bei 400MHz liegen bzw. im idle zumindest ab und an unter 800MHz fallen? Wie bereits erwähnt, erreiche ich im idle "nur" 800MHZ. Ich nutze TLP (Standard config) und habe dort schon mit den "CPU_SCALING"Parametern herum gespielt, was aber gar keine Wirkung hat. Was übersehe ich? Das Scaling scheint ja korrekt eingestellt zu sein...
Hier noch ein paar Infos:
Vielen Dank im vorraus!
evidence
ich nutze Debian Sid und frage mich, ob es normal es, dass meine CPU (i5-8250U) im Akkubetrieb nicht unter 800MHz taktet? Habt ihr mit dem t480s unter Linux ähnliche Erfahrungen? Der Hintergrund ist, dass ich das Maximum an Akkuleistung/Optimierung erreichen möchte.
Code:
cpupower frequency-info
analysiere CPU 0:
driver: intel_pstate
Folgende CPUs laufen mit der gleichen Hardware-Taktfrequenz: 0
Die Taktfrequenz folgender CPUs werden per Software koordiniert: 0
Maximale Dauer eines Taktfrequenzwechsels: Cannot determine or is not supported.
Hardwarebedingte Grenzen der Taktfrequenz: 400 MHz - 3.40 GHz
mögliche Regler: performance powersave
momentane Taktik: die Frequenz soll innerhalb 400 MHz und 3.40 GHz.
liegen. Der Regler "powersave" kann frei entscheiden,
welche Taktfrequenz innerhalb dieser Grenze verwendet wird.
current CPU frequency: Unable to call hardware
current CPU frequency: 801 MHz (asserted by call to kernel)
boost state support:
Supported: yes
Active: yes
Eigentlich sollte doch der minimale Takt bei 400MHz liegen bzw. im idle zumindest ab und an unter 800MHz fallen? Wie bereits erwähnt, erreiche ich im idle "nur" 800MHZ. Ich nutze TLP (Standard config) und habe dort schon mit den "CPU_SCALING"Parametern herum gespielt, was aber gar keine Wirkung hat. Was übersehe ich? Das Scaling scheint ja korrekt eingestellt zu sein...
Hier noch ein paar Infos:
Code:
sudo tlp-stat -p
--- TLP 1.1 --------------------------------------------
+++ Processor
CPU model = Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz
/sys/devices/system/cpu/cpu0/cpufreq/scaling_driver = intel_pstate
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor = powersave
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors = performance powersave
/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq = 400000 [kHz]
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq = 3400000 [kHz]
/sys/devices/system/cpu/cpu0/cpufreq/energy_performance_preference = balance_performance
/sys/devices/system/cpu/cpu0/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
/sys/devices/system/cpu/cpu1/cpufreq/scaling_driver = intel_pstate
/sys/devices/system/cpu/cpu1/cpufreq/scaling_governor = powersave
/sys/devices/system/cpu/cpu1/cpufreq/scaling_available_governors = performance powersave
/sys/devices/system/cpu/cpu1/cpufreq/scaling_min_freq = 400000 [kHz]
/sys/devices/system/cpu/cpu1/cpufreq/scaling_max_freq = 3400000 [kHz]
/sys/devices/system/cpu/cpu1/cpufreq/energy_performance_preference = balance_performance
/sys/devices/system/cpu/cpu1/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
/sys/devices/system/cpu/cpu2/cpufreq/scaling_driver = intel_pstate
/sys/devices/system/cpu/cpu2/cpufreq/scaling_governor = powersave
/sys/devices/system/cpu/cpu2/cpufreq/scaling_available_governors = performance powersave
/sys/devices/system/cpu/cpu2/cpufreq/scaling_min_freq = 400000 [kHz]
/sys/devices/system/cpu/cpu2/cpufreq/scaling_max_freq = 3400000 [kHz]
/sys/devices/system/cpu/cpu2/cpufreq/energy_performance_preference = balance_performance
/sys/devices/system/cpu/cpu2/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
/sys/devices/system/cpu/cpu3/cpufreq/scaling_driver = intel_pstate
/sys/devices/system/cpu/cpu3/cpufreq/scaling_governor = powersave
/sys/devices/system/cpu/cpu3/cpufreq/scaling_available_governors = performance powersave
/sys/devices/system/cpu/cpu3/cpufreq/scaling_min_freq = 400000 [kHz]
/sys/devices/system/cpu/cpu3/cpufreq/scaling_max_freq = 3400000 [kHz]
/sys/devices/system/cpu/cpu3/cpufreq/energy_performance_preference = balance_performance
/sys/devices/system/cpu/cpu3/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
/sys/devices/system/cpu/cpu4/cpufreq/scaling_driver = intel_pstate
/sys/devices/system/cpu/cpu4/cpufreq/scaling_governor = powersave
/sys/devices/system/cpu/cpu4/cpufreq/scaling_available_governors = performance powersave
/sys/devices/system/cpu/cpu4/cpufreq/scaling_min_freq = 400000 [kHz]
/sys/devices/system/cpu/cpu4/cpufreq/scaling_max_freq = 3400000 [kHz]
/sys/devices/system/cpu/cpu4/cpufreq/energy_performance_preference = balance_performance
/sys/devices/system/cpu/cpu4/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
/sys/devices/system/cpu/cpu5/cpufreq/scaling_driver = intel_pstate
/sys/devices/system/cpu/cpu5/cpufreq/scaling_governor = powersave
/sys/devices/system/cpu/cpu5/cpufreq/scaling_available_governors = performance powersave
/sys/devices/system/cpu/cpu5/cpufreq/scaling_min_freq = 400000 [kHz]
/sys/devices/system/cpu/cpu5/cpufreq/scaling_max_freq = 3400000 [kHz]
/sys/devices/system/cpu/cpu5/cpufreq/energy_performance_preference = balance_performance
/sys/devices/system/cpu/cpu5/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
/sys/devices/system/cpu/cpu6/cpufreq/scaling_driver = intel_pstate
/sys/devices/system/cpu/cpu6/cpufreq/scaling_governor = powersave
/sys/devices/system/cpu/cpu6/cpufreq/scaling_available_governors = performance powersave
/sys/devices/system/cpu/cpu6/cpufreq/scaling_min_freq = 400000 [kHz]
/sys/devices/system/cpu/cpu6/cpufreq/scaling_max_freq = 3400000 [kHz]
/sys/devices/system/cpu/cpu6/cpufreq/energy_performance_preference = balance_performance
/sys/devices/system/cpu/cpu6/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
/sys/devices/system/cpu/cpu7/cpufreq/scaling_driver = intel_pstate
/sys/devices/system/cpu/cpu7/cpufreq/scaling_governor = powersave
/sys/devices/system/cpu/cpu7/cpufreq/scaling_available_governors = performance powersave
/sys/devices/system/cpu/cpu7/cpufreq/scaling_min_freq = 400000 [kHz]
/sys/devices/system/cpu/cpu7/cpufreq/scaling_max_freq = 3400000 [kHz]
/sys/devices/system/cpu/cpu7/cpufreq/energy_performance_preference = balance_performance
/sys/devices/system/cpu/cpu7/cpufreq/energy_performance_available_preferences = default performance balance_performance balance_power power
/sys/devices/system/cpu/intel_pstate/min_perf_pct = 11 [%]
/sys/devices/system/cpu/intel_pstate/max_perf_pct = 30 [%]
/sys/devices/system/cpu/intel_pstate/no_turbo = 0
/sys/devices/system/cpu/intel_pstate/turbo_pct = 59 [%]
/sys/devices/system/cpu/intel_pstate/num_pstates = 31
x86_energy_perf_policy.cpu0 = performance
x86_energy_perf_policy.cpu0 = HWP_REQ: min
x86_energy_perf_policy.cpu0 = HWP_CAP: low
x86_energy_perf_policy.cpu1 = performance
x86_energy_perf_policy.cpu1 = HWP_REQ: min
x86_energy_perf_policy.cpu1 = HWP_CAP: low
x86_energy_perf_policy.cpu2 = performance
x86_energy_perf_policy.cpu2 = HWP_REQ: min
x86_energy_perf_policy.cpu2 = HWP_CAP: low
x86_energy_perf_policy.cpu3 = performance
x86_energy_perf_policy.cpu3 = HWP_REQ: min
x86_energy_perf_policy.cpu3 = HWP_CAP: low
x86_energy_perf_policy.cpu4 = performance
x86_energy_perf_policy.cpu4 = HWP_REQ: min
x86_energy_perf_policy.cpu4 = HWP_CAP: low
x86_energy_perf_policy.cpu5 = performance
x86_energy_perf_policy.cpu5 = HWP_REQ: min
x86_energy_perf_policy.cpu5 = HWP_CAP: low
x86_energy_perf_policy.cpu6 = performance
x86_energy_perf_policy.cpu6 = HWP_REQ: min
x86_energy_perf_policy.cpu6 = HWP_CAP: low
x86_energy_perf_policy.cpu7 = performance
x86_energy_perf_policy.cpu7 = HWP_REQ: min
x86_energy_perf_policy.cpu7 = HWP_CAP: low
/sys/module/workqueue/parameters/power_efficient = N
/proc/sys/kernel/nmi_watchdog = 0
+++ Undervolting
PHC kernel not available.
Vielen Dank im vorraus!
evidence
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