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sprittwicht
l33t
l33t


Joined: 04 Dec 2003
Posts: 644

PostPosted: Tue Oct 21, 2014 11:54 pm    Post subject: /sys/devices/system/cpu/cpu0/cpufreq/ fehlt: kein ondemand Reply with quote

Besagtes Verzeichnis existiert auf einem Phenom II X4 945 (K10), nicht aber auf einem Sempron LE-1100 (K8) und Opteron 1214 HE (K9).
Zumindest auf dem K8 gab es das definitiv mal, aber irgendein Kernelupdate hat's mir wohl geraubt.

Ich kann in den Kernelkonfigurationen keine wesentlichen Unterschiede in Sachen cpufreq ausmachen, hatte vielleicht schon jemand dieses Problem und weiß an welcher Konfigurationsoption es liegen kann?

EDIT: Anders formuliert: Auf den betroffenen Rechnern arbeitet der im Kernel konfigurierte Ondemand-Governor nicht. Wie kann ich den aktivieren?

Kleiner Auszug aus der (nicht funktionierenden) Kernelconfig des K8:
Code:
#
# Power management and ACPI options
#
# CONFIG_SUSPEND is not set
# CONFIG_HIBERNATION is not set
CONFIG_PM_RUNTIME=y
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
CONFIG_ACPI=y
CONFIG_ACPI_PROCFS=y
CONFIG_ACPI_PROCFS_POWER=y
# CONFIG_ACPI_EC_DEBUGFS is not set
CONFIG_ACPI_AC=y
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_FAN=y
CONFIG_ACPI_DOCK=y
CONFIG_ACPI_PROCESSOR=y
# CONFIG_ACPI_PROCESSOR_AGGREGATOR is not set
CONFIG_ACPI_THERMAL=y
# CONFIG_ACPI_CUSTOM_DSDT is not set
# CONFIG_ACPI_INITRD_TABLE_OVERRIDE is not set
# CONFIG_ACPI_DEBUG is not set
# CONFIG_ACPI_PCI_SLOT is not set
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=y
# CONFIG_ACPI_SBS is not set
# CONFIG_ACPI_HED is not set
# CONFIG_ACPI_APEI is not set
# CONFIG_ACPI_EXTLOG is not set
# CONFIG_SFI is not set

#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_GOV_COMMON=y
CONFIG_CPU_FREQ_STAT=y
# CONFIG_CPU_FREQ_STAT_DETAILS is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y

#
# x86 CPU frequency scaling drivers
#
# CONFIG_X86_INTEL_PSTATE is not set
# CONFIG_X86_PCC_CPUFREQ is not set
CONFIG_X86_ACPI_CPUFREQ=y
CONFIG_X86_ACPI_CPUFREQ_CPB=y
CONFIG_X86_POWERNOW_K8=y
# CONFIG_X86_AMD_FREQ_SENSITIVITY is not set
# CONFIG_X86_SPEEDSTEP_CENTRINO is not set
# CONFIG_X86_P4_CLOCKMOD is not set

#
# shared options
#
# CONFIG_X86_SPEEDSTEP_LIB is not set

#
# CPU Idle
#
CONFIG_CPU_IDLE=y
# CONFIG_CPU_IDLE_MULTIPLE_DRIVERS is not set
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y
# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set
# CONFIG_INTEL_IDLE is not set
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sprittwicht
l33t
l33t


Joined: 04 Dec 2003
Posts: 644

PostPosted: Wed Oct 22, 2014 8:43 am    Post subject: Reply with quote

Problem teilweise gelöst: Der K8 vergisst manchmal seine Bioseinstellungen (trotz voller Batterie, das Mainboard spinnt wohl ein wenig, MSI = kein Kauftip).
Nach dem Reset hatte ich vergessen PowerNow im Bios zu aktivieren, damit geht's nun wieder.

Frage: Ist der Kernel auf diese Bioseinstellung zwingend angewiesen oder kann man ihn auch ohne PowerNow im Bios dazu überreden, den CPU-Takt anzupassen?
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