Re: 3.10-rcX: cpu governor ondemand doesn't scale well after s2ram

["Toralf Förster" <toralf.foerster@gmx.de>]

On 06/19/2013 12:05 AM, Rafael J. Wysocki wrote:
> Hmm.  This looks like something unrelated to the previous reports.

yes

> How do you check the frequencies?

much more significant is the temperature :

$> cat /sys/devices/system/cpu/cpu\?/thermal_throttle/package_power_limit_count /proc/acpi/ibm/fan /sys/class/hwmon/hwmon\?/device/temp\?_input'

- it is around 49° if just 4 BOINC childs are running at nice level -19, but it is above 65°C if the issue exists. And in hat case I just do run 

$> for g in performance ondemand; do for i in 0 1 2 3; do echo $g > /sys/devices/system/cpu/cpu$i/cpufreq/scaling_governor; done; done; echo 1 > /sys/devices/system/cpu/cpufreq/ondemand/ignore_nice

and the system is back to normal.

> Does that happen every time?  If so, any chance to bisect driver/cpufreq
> changes between 3.9 and now?

first bisect attempts failed. I realized that the issue only occurs if the power is plugged in. If the system is running on battery the issue doesn't occurred (I checked it more than once)

> Does it work without ignore_nice?
Seems not to be related to that.

-- 
MfG/Sincerely
Toralf Förster
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