cpufreq pb

[promeneur]

with all mib kernel nrj pae desktop cpufreq-info says profile list is users,performance.

but the pb is : the profile list must be powersave, conservative, ondemand, users,
performance because :
- cool and quiet feature is enable in the bios for my amd x2 64 cpu
- with old kernel as mandriva 2.6.33.7 desktop the profile list is powersave,
ondemand, conservative, users, performance

i assume something is not well set in the kernel source settings (before
compilation)
i assume in the kernel source settings powersave, conservative and ondemand are not activated

what do you think of this :

[root@localhost ~]# zgrep CPU_FREQ /proc/config.gz
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=m
CONFIG_CPU_FREQ_STAT=m
CONFIG_CPU_FREQ_STAT_DETAILS=y
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=m
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=m
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m
[root@localhost ~]#

[promeneur]

is there a way (command line) to activate powersave and conservative, ondemand ?

[serma]

<For options set to m, load the modules when you need them. You must manually load them after each boot if they are not loaded automatically by the distribution configuration >
modprobe cpufreq_powersave

Kernel options related to CPUFreq
http://publib.boulder.ibm.com/infocente ... PUFreq.htm

[NicCo]

So, did you find a solution for your problem?

You must manually load them after each boot if they are not loaded automatically by the distribution configuration
modprobe cpufreq_powersave

Surely it should better if these modules were loaded on each boot, instead of manual way
Perhaps you can load in the KDE Control Center, where there is the setup for Power Management

bye, NicCo

[serma]

So, did you find a solution for your problem?
Surely it should better if these modules were loaded on each boot, instead of manual way
Perhaps you can load in the KDE Control Center, where there is the setup for Power Management
bye, NicCo

i dont find it

@localhost ~]$ 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
maximum transition latency: 10.0 us.
hardware limits: 933 MHz - 2.13 GHz
available frequency steps: 2.13 GHz, 2.00 GHz, 1.87 GHz, 1.73 GHz, 1.60 GHz, 1.47 GHz, 1.33 GHz, 1.20 GHz, 1.07 GHz, 933 MHz
available cpufreq governors: ondemand, userspace, performance
current policy: frequency should be within 933 MHz and 2.13 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 933 MHz.
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: 1
maximum transition latency: 10.0 us.
hardware limits: 933 MHz - 2.13 GHz
available frequency steps: 2.13 GHz, 2.00 GHz, 1.87 GHz, 1.73 GHz, 1.60 GHz, 1.47 GHz, 1.33 GHz, 1.20 GHz, 1.07 GHz, 933 MHz
available cpufreq governors: ondemand, userspace, performance
current policy: frequency should be within 933 MHz and 2.13 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 933 MHz.
analyzing CPU 2:

[serma]

add the desired governor(s) to the MODULES array in /etc/modules and reboot ??

# /etc/modules: kernel modules to load at boot time.
#
# This file should contain the names of kernel modules that are
# to be loaded at boot time, one per line. Comments begin with
# a `#', and everything on the line after them are ignored.
coretemp

https://wiki.archlinux.org/index.php/CP ... ncy_driver

[promeneur]

/etc/modules is for kernel < 2.6

we must use /etc/modprobe.preload

[promeneur]

we must put in /etc/syconfig/cpufreq file the statement

GOVERNOR=ondemand

[NicCo]

upto 2010 we have mkinird
from 2011 we have systemd

the boot inits scripts start in different ways...
so what you did with 2012 could be not fine for 2011 or 2012,

and I can see "serma", differently than you, has 2011 and 2012

[promeneur]

the solution does not work !

randomly
- system freezes
- system restarts by itself !

i think a good solution is to set correctly the kernel source and to compile it again.

is the netbook flavour well set ?

for netbook i assume power management is activated and at least "ondemand" or "powersave" profile is set to "y"

[NicCo]

I could set, for the next time, these values on all -netbook flavours

CONFIG_CPU_FREQ_GOV_PERFORMANCE=m
CONFIG_CPU_FREQ_GOV_POWERSAVE=m
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m

but I have a doubt... we must do the best things for the most people,

I remember that some kernel with some rare hardware could freeze when ONDEMAND
especially when the ACPI support is NOT so good or so stable for the own hardware...

in the meawhile, can you try enabling other profiles manually (Powersave & Conservative)?


Could you test a newer kernel than 3.1.x trunk?
Kernel 3.2 is LTS and has a long support for updates (latest is 3.2.27)

[promeneur]

1. it's not only for netbook kernel we must set the missing profiles

2.
i face to this pb since 2 years with my 2010.2
no pb with 2.6.37 i586 desktop mandriva

the pb occurs since i use kernel that can use 4 Gb and more:

for kernel 2.6.37 i586 server mandriva and all mib nrj pae i586 kernels till 3.1.6 only performance and userspace profiles are supplied.
perhaps there is a reason for this, a kernel developper reason ?

this is not only mandriva 2010.2 that freezes but also mageia 1 and 2 and mandriva 2011

no doubt that nrj pae desktop 3.2.x freezes.

i will try

[NicCo]

I can study with you the problem, searching a solution,
we must discuss a lot, probably make many attempts

To begin:

The problem happens only with -server or -pae enabled?

The problem is not present in other kernels NOT PAE?
are you sure? can you try again?

I remember having read something about:
In new kernel developers preferred not using ONDEMAND because recent kernel are enabled by default with
High-Res Timers (HZ=1000) and Tickless Kernel
so changing cpu frequency speed using ONDEMAND can lead only to problems and not real energy saving...

[serma]

Kernel: 3.5.1-nrj-desktop-1rosa

@localhost ~]$ inxi -Fixz
System: Host: localhost.localdomain Kernel: 3.5.1-nrj-desktop-1rosa.lts x86_64 (64 bit, gcc: 4.6.1)
Desktop: KDE 4.8.4 (Qt 4.8.0) Distro: MandrivaLinux 2012.0 turtle

@localhost ~]$ zgrep CPU_FREQ /proc/config.gz
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=m
CONFIG_CPU_FREQ_STAT=m
CONFIG_CPU_FREQ_STAT_DETAILS=y
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=m
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=m
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m

@localhost ~]$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
ondemand
ondemand
ondemand
ondemand

[promeneur]

i resolved "freeze-reboot" pb.

it's a harware pb : a memory card

i took it away then no more pb, just 1 GB less

but it remains the question : is it useful to save energy and to decrease the temperature of the cpu, using ondemand profile with 3.2.27 ?

Theoretiically it's too techie for me and i have not a tool to record temperature with or without.

Practically with gkrell i see the temperature of the cpu decreases when frequency decreases then i conlude "yes"

note : i read also that bios can cause such a freeze. updating bios solves pb (in my case bios was updated for a long time)