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[Bug 231107] CPU frequency policy
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Fri, 9 Feb 2007 10:29:18 -0700 (MST)
  • Message-id: <20070209172918.8D192D40@xxxxxxxxxxxxxxxxxxxxxx>

f.alabas@xxxxxxxxxxxx changed:

What |Removed |Added
Info Provider|f.alabas@xxxxxxxxxxxx |

------- Comment #24 from f.alabas@xxxxxxxxxxxx 2007-02-09 10:29 MST -------
Thomas, before having seen the comment #23 from Stefan, I have already followed
the method you wrote me.

(In reply to comment #22)
> Can you try to reproduce the bug by setting up cpufreq by hand:
> Set:
> in
> /etc/sysconfig/powersave/cpufreq
> If you reboot (without AC to try whether the problem got workarounded), check
> that powernow-k8 module and cpufreq_ondemand modules were not loaded.
> Then load them:
> modprobe powernow-k8
> modprobe cpufreq_ondemand
> and activate the ondemand governor:
> echo ondemand >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
> Try the watch/monitor commands from above and play with AC (un)plug.
> Does it work now?

No, it does not work.....

> If it works now, can you revert the sysconfig variable to:
> again and
> change in /etc/sysconfig/powersave/scheme_powersave
> (I am not sure whether it's still this variable that is used for setting
> ignore_nice in 10.2, Seife or Holger may want to correct me here).
> Reboot and play again with AC (un)plug.
> If it now again works we probably have a nasty locking problem when writing to
> ignore_nice when using ondemand governor.

It does not work too...

I have also tested my issue by disabling the powersaved from within the
runlevel services and this does not help. After having disabled the powersaved
service, I booted the machine on battery and still see that the highest
frequency is not allowed after AC-plugged.

I tried and played removing/inserting the powernow-k8, cpufreq-* modules and
assigning different schemes into scaling_governor, however nothing help me to
bring frequency to the highest available !!

As to comment #23, I have the latest HAL package. (hal-0.5.8_git20061106-31.1)
If Stefan means;
- b.n.c #223517: fix logic for consider nice in CPU Freq addon
(hal-fix-consider-nice-logic_223517.diff) from hmacht@xxxxxxx
which is seen in the changelog, then I have the latest fixed version of HAL.
However, do you think my findings about "ignore_nice_load values" in comment
#21 is as what it should be ?

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