[Bug 55091] New: cpufreq governors woks crazy

bugzilla-daemon
2013-03-11T21:58:46Z

Summary: cpufreq governors woks crazy
Product: Power Management
Version: 2.5
Kernel Version: 3.9-rc2
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: cpufreq
AssignedTo: cpufreq@vger.kernel.org
ReportedBy: towo@siduction.org
Regression: No

Since i test kernel 3.9-rc2, cpufreq is crazy with governors ondemand and
conservative.
Even if the system is idling, cpufreq is on the highest or medium frequency.
Only with powersafe i can get the cpu to the lowest frequency.

This behavior i cant see in 3.8 or below.

Here the output from cpufreq-info:

cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq@vger.kernel.org, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1 2 3
CPUs which need to have their frequency coordinated by software: 0 1 2 3
maximum transition latency: 10.0 us.
hardware limits: 1.60 GHz - 2.66 GHz
available frequency steps: 2.66 GHz, 2.13 GHz, 1.60 GHz
available cpufreq governors: powersave, conservative, userspace, ondemand,
performance
current policy: frequency should be within 1.60 GHz and 2.66 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 1.60 GHz.
cpufreq stats: 2.66 GHz:3.10%, 2.13 GHz:3.09%, 1.60 GHz:93.81% (8123)
analyzing CPU 1:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1 2 3
CPUs which need to have their frequency coordinated by software: 0 1 2 3
maximum transition latency: 10.0 us.
hardware limits: 1.60 GHz - 2.66 GHz
available frequency steps: 2.66 GHz, 2.13 GHz, 1.60 GHz
available cpufreq governors: powersave, conservative, userspace, ondemand,
performance
current policy: frequency should be within 1.60 GHz and 2.66 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 1.60 GHz.
cpufreq stats: 2.66 GHz:3.10%, 2.13 GHz:3.09%, 1.60 GHz:93.81% (8123)
analyzing CPU 2:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1 2 3
CPUs which need to have their frequency coordinated by software: 0 1 2 3
maximum transition latency: 10.0 us.
hardware limits: 1.60 GHz - 2.66 GHz
available frequency steps: 2.66 GHz, 2.13 GHz, 1.60 GHz
available cpufreq governors: powersave, conservative, userspace, ondemand,
performance
current policy: frequency should be within 1.60 GHz and 2.66 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 1.60 GHz.
cpufreq stats: 2.66 GHz:3.10%, 2.13 GHz:3.09%, 1.60 GHz:93.81% (8123)
analyzing CPU 3:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1 2 3
CPUs which need to have their frequency coordinated by software: 0 1 2 3
maximum transition latency: 10.0 us.
hardware limits: 1.60 GHz - 2.66 GHz
available frequency steps: 2.66 GHz, 2.13 GHz, 1.60 GHz
available cpufreq governors: powersave, conservative, userspace, ondemand,
performance
current policy: frequency should be within 1.60 GHz and 2.66 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 1.60 GHz.
cpufreq stats: 2.66 GHz:3.10%, 2.13 GHz:3.09%, 1.60 GHz:93.81% (8123)