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[Bug 216205] GNOME: The CPU frequency scaler seems to work in an opposite way
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Mon, 30 Oct 2006 13:22:10 -0700 (MST)
  • Message-id: <20061030202210.51CEEF32@xxxxxxxxxxxxxxxxxxxxxx>
https://bugzilla.novell.com/show_bug.cgi?id=216205





------- Comment #8 from mboman@xxxxxxxxxx 2006-10-30 13:22 MST -------
Some more information. I've warm booted my machine several times. I'm getting
different results when checking files in /sys/devices/system/cpu/cpu0/cpufreq.
I also see a crash_notes file in /sys/devices/system/cpu/cpu0. Not sure if it's
relevant.
I know for a fact that when I made the first output (where the CPU max is
800000) that HAL wasn't running.
Output of results (attaching a file as well incase it's difficult to read from
here)

-- This output is taken when the frequency does not change at all. It always
sits at 35%.

mblxws01:/sys/devices/system/cpu/cpu0/cpufreq # grep "" *
affected_cpus:0
cpuinfo_cur_freq:800000
cpuinfo_max_freq:2266000
cpuinfo_min_freq:800000
scaling_available_frequencies:2266000 1866000 1600000 1333000 1066000 800000
scaling_available_governors:conservative ondemand userspace powersave
performance
scaling_cur_freq:800000
scaling_driver:centrino
scaling_governor:performance
scaling_max_freq:800000
scaling_min_freq:800000


mblxws01:/sys/devices/system/cpu/cpu0/cpufreq # cpufreq-info
cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to http://bugs.opensuse.org, please.
analyzing CPU 0:
driver: centrino
CPUs which need to switch frequency at the same time: 0
hardware limits: 800 MHz - 2.27 GHz
available frequency steps: 2.27 GHz, 1.87 GHz, 1.60 GHz, 1.33 GHz, 1.07 GHz,
800 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave,
performance
current policy: frequency should be within 800 MHz and 800 MHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 800 MHz (asserted by call to hardware).



-- This output is taken after switching to user space and everything is working

mblxws01:/sys/devices/system/cpu/cpu0/cpufreq # grep "" *
affected_cpus:0
cpuinfo_cur_freq:800000
cpuinfo_max_freq:2266000
cpuinfo_min_freq:800000
scaling_available_frequencies:2266000 1866000 1600000 1333000 1066000 800000
scaling_available_governors:conservative ondemand userspace powersave
performance
scaling_cur_freq:800000
scaling_driver:centrino
scaling_governor:userspace
scaling_max_freq:2266000
scaling_min_freq:800000
scaling_setspeed:800000


mblxws01:/sys/devices/system/cpu/cpu0/cpufreq # cpufreq-info
cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to http://bugs.opensuse.org, please.
analyzing CPU 0:
driver: centrino
CPUs which need to switch frequency at the same time: 0
hardware limits: 800 MHz - 2.27 GHz
available frequency steps: 2.27 GHz, 1.87 GHz, 1.60 GHz, 1.33 GHz, 1.07 GHz,
800 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave,
performance
current policy: frequency should be within 800 MHz and 2.27 GHz.
The governor "userspace" may decide which speed to use
within this range.
current CPU frequency is 800 MHz (asserted by call to hardware).


-- This output is taken when it's working the opposite way (ie: idle=100%,
busy=35%)

mblxws01:/sys/devices/system/cpu/cpu0/cpufreq # grep "" *
affected_cpus:0
cpuinfo_cur_freq:2266000
cpuinfo_max_freq:2266000
cpuinfo_min_freq:800000
scaling_available_frequencies:2266000 1866000 1600000 1333000 1066000 800000
scaling_available_governors:conservative ondemand userspace powersave
performance
scaling_cur_freq:2266000
scaling_driver:centrino
scaling_governor:performance
scaling_max_freq:2266000
scaling_min_freq:800000

mblxws01:/sys/devices/system/cpu/cpu0/cpufreq # cpufreq-info
cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to http://bugs.opensuse.org, please.
analyzing CPU 0:
driver: centrino
CPUs which need to switch frequency at the same time: 0
hardware limits: 800 MHz - 2.27 GHz
available frequency steps: 2.27 GHz, 1.87 GHz, 1.60 GHz, 1.33 GHz, 1.07 GHz,
800 MHz
available cpufreq governors: conservative, ondemand, userspace, powersave,
performance
current policy: frequency should be within 800 MHz and 2.27 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 2.27 GHz (asserted by call to hardware).


-- Every time my computer has been started, this file is created. Not sure if
it's relevant

mblxws01:/sys/devices/system/cpu/cpu0 # cat crash_notes
1fc32800


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