* Problem with cpufreq and i5 since post 3.9.0
@ 2013-12-27 18:59 David Woodfall
2013-12-27 19:44 ` Heinz Diehl
0 siblings, 1 reply; 6+ messages in thread
From: David Woodfall @ 2013-12-27 18:59 UTC (permalink / raw)
To: linux-kernel
I recently upgraded from 3.9.0 to 3.10.17 and found that I don't have
the same cpufreq governors available. I also tested with 3.12.6 and
3.13.0_rc5 with the same results.
3.9.0 tells me:
cat /sys/devices/system/cpu/*/cpufreq/scaling_available_governors
conservative ondemand powersave userspace performance
conservative ondemand powersave userspace performance
conservative ondemand powersave userspace performance
conservative ondemand powersave userspace performance
But any of the newer kernel versions I've tested only give me
performance and powersave.
I have selected userspace as default governor and all other governors
as built-in on all versions.
I need to either be able to use performance or use userspace and set
for the max frequency. This is for an old application that tries to
detect cpu speed, but fails because it is from the days before
scaling.
Can anyone tell me what I need to do with these newer kernels?
Regards
-Dave
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Problem with cpufreq and i5 since post 3.9.0
2013-12-27 18:59 Problem with cpufreq and i5 since post 3.9.0 David Woodfall
@ 2013-12-27 19:44 ` Heinz Diehl
2013-12-27 19:53 ` David Woodfall
0 siblings, 1 reply; 6+ messages in thread
From: Heinz Diehl @ 2013-12-27 19:44 UTC (permalink / raw)
To: linux-kernel
On 27.12.2013, David Woodfall wrote:
> But any of the newer kernel versions I've tested only give me
> performance and powersave.
I don't use any Fedora kernel, so I can't tell which governors are
enabled in those. You should check the value of "CONFIG_CPU_FREQ_GOV"
in the respective .config file for your installed kernel.
In short: It seems that only "performance" and "powersave" are
compiled in.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Problem with cpufreq and i5 since post 3.9.0
2013-12-27 19:44 ` Heinz Diehl
@ 2013-12-27 19:53 ` David Woodfall
2013-12-28 0:09 ` David Woodfall
0 siblings, 1 reply; 6+ messages in thread
From: David Woodfall @ 2013-12-27 19:53 UTC (permalink / raw)
To: linux-kernel
On (27/12/13 20:44), Heinz Diehl <htd@fancy-poultry.org> put forth the proposition:
>On 27.12.2013, David Woodfall wrote:
>
>> But any of the newer kernel versions I've tested only give me
>> performance and powersave.
>
>I don't use any Fedora kernel, so I can't tell which governors are
>enabled in those. You should check the value of "CONFIG_CPU_FREQ_GOV"
>in the respective .config file for your installed kernel.
>
>In short: It seems that only "performance" and "powersave" are
>compiled in.
No, I used the same .config in all versions that I tested. I've also
tried setting them as modules rather than built-in. This is the stock
slackware .config:
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=m
CONFIG_CPU_FREQ_GOV_COMMON=y
CONFIG_CPU_FREQ_STAT=m
CONFIG_CPU_FREQ_STAT_DETAILS=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=m
CONFIG_CPU_FREQ_GOV_POWERSAVE=m
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=m
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
And modprobing any governor module does not change the output of
scaling_available_governors.
-Dave
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Problem with cpufreq and i5 since post 3.9.0
2013-12-27 19:53 ` David Woodfall
@ 2013-12-28 0:09 ` David Woodfall
2013-12-28 0:50 ` Rafael J. Wysocki
0 siblings, 1 reply; 6+ messages in thread
From: David Woodfall @ 2013-12-28 0:09 UTC (permalink / raw)
To: linux-kernel
On (27/12/13 19:53), Dave Woodfall <dave@dawoodfall.net> put forth the proposition:
>On (27/12/13 20:44), Heinz Diehl <htd@fancy-poultry.org> put forth the proposition:
>>On 27.12.2013, David Woodfall wrote:
>>
>>>But any of the newer kernel versions I've tested only give me
>>>performance and powersave.
>>
>>I don't use any Fedora kernel, so I can't tell which governors are
>>enabled in those. You should check the value of "CONFIG_CPU_FREQ_GOV"
>>in the respective .config file for your installed kernel.
>>
>>In short: It seems that only "performance" and "powersave" are
>>compiled in.
>
>No, I used the same .config in all versions that I tested. I've also
>tried setting them as modules rather than built-in. This is the stock
>slackware .config:
>
>CONFIG_CPU_FREQ=y
>CONFIG_CPU_FREQ_TABLE=m
>CONFIG_CPU_FREQ_GOV_COMMON=y
>CONFIG_CPU_FREQ_STAT=m
>CONFIG_CPU_FREQ_STAT_DETAILS=y
># CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
>CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
># CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
># CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
>CONFIG_CPU_FREQ_GOV_PERFORMANCE=m
>CONFIG_CPU_FREQ_GOV_POWERSAVE=m
>CONFIG_CPU_FREQ_GOV_USERSPACE=y
>CONFIG_CPU_FREQ_GOV_ONDEMAND=m
>CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
>
>And modprobing any governor module does not change the output of
>scaling_available_governors.
>
>-Dave
I'm also experiencing this with a Intel G640 dual core machine.
Exactly the same effect.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Problem with cpufreq and i5 since post 3.9.0
2013-12-28 0:09 ` David Woodfall
@ 2013-12-28 0:50 ` Rafael J. Wysocki
2013-12-28 1:23 ` David Woodfall
0 siblings, 1 reply; 6+ messages in thread
From: Rafael J. Wysocki @ 2013-12-28 0:50 UTC (permalink / raw)
To: David Woodfall; +Cc: linux-kernel, Viresh Kumar, linux-pm
CC: +Viresh and linux-pm
On Saturday, December 28, 2013 12:09:01 AM David Woodfall wrote:
> On (27/12/13 19:53), Dave Woodfall <dave@dawoodfall.net> put forth the proposition:
> >On (27/12/13 20:44), Heinz Diehl <htd@fancy-poultry.org> put forth the proposition:
> >>On 27.12.2013, David Woodfall wrote:
> >>
> >>>But any of the newer kernel versions I've tested only give me
> >>>performance and powersave.
> >>
> >>I don't use any Fedora kernel, so I can't tell which governors are
> >>enabled in those. You should check the value of "CONFIG_CPU_FREQ_GOV"
> >>in the respective .config file for your installed kernel.
> >>
> >>In short: It seems that only "performance" and "powersave" are
> >>compiled in.
> >
> >No, I used the same .config in all versions that I tested. I've also
> >tried setting them as modules rather than built-in. This is the stock
> >slackware .config:
> >
> >CONFIG_CPU_FREQ=y
> >CONFIG_CPU_FREQ_TABLE=m
> >CONFIG_CPU_FREQ_GOV_COMMON=y
> >CONFIG_CPU_FREQ_STAT=m
> >CONFIG_CPU_FREQ_STAT_DETAILS=y
> ># CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
> >CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
> ># CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
> ># CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
> >CONFIG_CPU_FREQ_GOV_PERFORMANCE=m
> >CONFIG_CPU_FREQ_GOV_POWERSAVE=m
> >CONFIG_CPU_FREQ_GOV_USERSPACE=y
> >CONFIG_CPU_FREQ_GOV_ONDEMAND=m
> >CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
> >
> >And modprobing any governor module does not change the output of
> >scaling_available_governors.
> >
> >-Dave
>
> I'm also experiencing this with a Intel G640 dual core machine.
> Exactly the same effect.
Do you have CONFIG_X86_INTEL_PSTATE set?
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Problem with cpufreq and i5 since post 3.9.0
2013-12-28 0:50 ` Rafael J. Wysocki
@ 2013-12-28 1:23 ` David Woodfall
0 siblings, 0 replies; 6+ messages in thread
From: David Woodfall @ 2013-12-28 1:23 UTC (permalink / raw)
To: Rafael J. Wysocki; +Cc: linux-kernel, Viresh Kumar, linux-pm
On (28/12/13 01:50), Rafael J. Wysocki <rjw@rjwysocki.net> put forth the proposition:
>CC: +Viresh and linux-pm
>
>On Saturday, December 28, 2013 12:09:01 AM David Woodfall wrote:
>> On (27/12/13 19:53), Dave Woodfall <dave@dawoodfall.net> put forth the proposition:
>> >On (27/12/13 20:44), Heinz Diehl <htd@fancy-poultry.org> put forth the proposition:
>> >>On 27.12.2013, David Woodfall wrote:
>> >>
>> >>>But any of the newer kernel versions I've tested only give me
>> >>>performance and powersave.
>> >>
>> >>I don't use any Fedora kernel, so I can't tell which governors are
>> >>enabled in those. You should check the value of "CONFIG_CPU_FREQ_GOV"
>> >>in the respective .config file for your installed kernel.
>> >>
>> >>In short: It seems that only "performance" and "powersave" are
>> >>compiled in.
>> >
>> >No, I used the same .config in all versions that I tested. I've also
>> >tried setting them as modules rather than built-in. This is the stock
>> >slackware .config:
>> >
>> >CONFIG_CPU_FREQ=y
>> >CONFIG_CPU_FREQ_TABLE=m
>> >CONFIG_CPU_FREQ_GOV_COMMON=y
>> >CONFIG_CPU_FREQ_STAT=m
>> >CONFIG_CPU_FREQ_STAT_DETAILS=y
>> ># CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
>> >CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
>> ># CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
>> ># CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
>> >CONFIG_CPU_FREQ_GOV_PERFORMANCE=m
>> >CONFIG_CPU_FREQ_GOV_POWERSAVE=m
>> >CONFIG_CPU_FREQ_GOV_USERSPACE=y
>> >CONFIG_CPU_FREQ_GOV_ONDEMAND=m
>> >CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
>> >
>> >And modprobing any governor module does not change the output of
>> >scaling_available_governors.
>> >
>> >-Dave
>>
>> I'm also experiencing this with a Intel G640 dual core machine.
>> Exactly the same effect.
>
>Do you have CONFIG_X86_INTEL_PSTATE set?
I did and unsetting it solves the problem.
Thanks for that pointer.
-Dave
^ permalink raw reply [flat|nested] 6+ messages in thread
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2013-12-27 18:59 Problem with cpufreq and i5 since post 3.9.0 David Woodfall
2013-12-27 19:44 ` Heinz Diehl
2013-12-27 19:53 ` David Woodfall
2013-12-28 0:09 ` David Woodfall
2013-12-28 0:50 ` Rafael J. Wysocki
2013-12-28 1:23 ` David Woodfall
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