[ltp] Thinkpad T61, Ubuntu, cpu scaling

Schoap D linux-thinkpad@linux-thinkpad.org
Wed, 15 Jun 2011 17:04:41 +0200


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Hi,

Afaik my system is capable of handling 2GHz, but when I set cpu scaling on
performance it displays only 1.20GHz. What is going wrong here?


$ cpufreq-info
cpufrequtils 006: 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
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 10.0 us.
  hardware limits: 800 MHz - 2.00 GHz
  available frequency steps: 2.00 GHz, 2.00 GHz, 1.60 GHz, 1.20 GHz, 800 MHz
  available cpufreq governors: conservative, ondemand, userspace, powersave,
performance
  current policy: frequency should be within 800 MHz and 1.20 GHz.
                  The governor "performance" may decide which speed to use
                  within this range.
  current CPU frequency is 1.20 GHz.
  cpufreq stats: 2.00 GHz:0.00%, 2.00 GHz:0.00%, 1.60 GHz:0.00%, 1.20
GHz:99.42%, 800 MHz:0.58%  (5)
analyzing CPU 1:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 0 1
  CPUs which need to have their frequency coordinated by software: 1
  maximum transition latency: 10.0 us.
  hardware limits: 800 MHz - 2.00 GHz
  available frequency steps: 2.00 GHz, 2.00 GHz, 1.60 GHz, 1.20 GHz, 800 MHz
  available cpufreq governors: conservative, ondemand, userspace, powersave,
performance
  current policy: frequency should be within 800 MHz and 1.20 GHz.
                  The governor "userspace" may decide which speed to use
                  within this range.
  current CPU frequency is 800 MHz.
  cpufreq stats: 2.00 GHz:0.00%, 2.00 GHz:0.00%, 1.60 GHz:0.00%, 1.20
GHz:10.23%, 800 MHz:89.77%  (5)

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Hi,<br><br>Afaik my system is capable of handling 2GHz, but when I set cpu =
scaling on performance it displays only 1.20GHz. What is going wrong here?<=
br><br><br>$ cpufreq-info <br>cpufrequtils 006: cpufreq-info (C) Dominik Br=
odowski 2004-2009<br>
Report errors and bugs to <a href=3D"mailto:cpufreq@vger.kernel.org">cpufre=
q@vger.kernel.org</a>, please.<br>analyzing CPU 0:<br>=A0 driver: acpi-cpuf=
req<br>=A0 CPUs which run at the same hardware frequency: 0 1<br>=A0 CPUs w=
hich need to have their frequency coordinated by software: 0<br>
=A0 maximum transition latency: 10.0 us.<br>=A0 hardware limits: 800 MHz - =
2.00 GHz<br>=A0 available frequency steps: 2.00 GHz, 2.00 GHz, 1.60 GHz, 1.=
20 GHz, 800 MHz<br>=A0 available cpufreq governors: conservative, ondemand,=
 userspace, powersave, performance<br>
=A0 current policy: frequency should be within 800 MHz and 1.20 GHz.<br>=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 The governor &quot;perform=
ance&quot; may decide which speed to use<br>=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0 within this range.<br>=A0 current CPU frequency is 1.=
20 GHz.<br>
=A0 cpufreq stats: 2.00 GHz:0.00%, 2.00 GHz:0.00%, 1.60 GHz:0.00%, 1.20 GHz=
:99.42%, 800 MHz:0.58%=A0 (5)<br>analyzing CPU 1:<br>=A0 driver: acpi-cpufr=
eq<br>=A0 CPUs which run at the same hardware frequency: 0 1<br>=A0 CPUs wh=
ich need to have their frequency coordinated by software: 1<br>
=A0 maximum transition latency: 10.0 us.<br>=A0 hardware limits: 800 MHz - =
2.00 GHz<br>=A0 available frequency steps: 2.00 GHz, 2.00 GHz, 1.60 GHz, 1.=
20 GHz, 800 MHz<br>=A0 available cpufreq governors: conservative, ondemand,=
 userspace, powersave, performance<br>
=A0 current policy: frequency should be within 800 MHz and 1.20 GHz.<br>=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 The governor &quot;userspa=
ce&quot; may decide which speed to use<br>=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0 within this range.<br>=A0 current CPU frequency is 800 M=
Hz.<br>
=A0 cpufreq stats: 2.00 GHz:0.00%, 2.00 GHz:0.00%, 1.60 GHz:0.00%, 1.20 GHz=
:10.23%, 800 MHz:89.77%=A0 (5)<br><br>

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