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Bug 151761 - cpuspeed init script should allow user setting minimum and maximum frequency
cpuspeed init script should allow user setting minimum and maximum frequency
Product: Fedora
Classification: Fedora
Component: cpuspeed (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Jarod Wilson
: FutureFeature
Depends On:
  Show dependency treegraph
Reported: 2005-03-21 22:08 EST by Behdad Esfahbod
Modified: 2007-11-30 17:11 EST (History)
1 user (show)

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Fixed In Version:
Doc Type: Enhancement
Doc Text:
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Last Closed: 2007-01-08 11:32:52 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Behdad Esfahbod 2005-03-21 22:08:19 EST
Description of problem:
The init scipt for cpuspeed should allow user to set minimum and maximum
frequency.  Pentium 4 CPUs allow scaling down to 12%, which makes them a bit
unresponsive in GUI.  I wish to be able a minimum like 500MHz for scaling.

Additional info:
This can be done by adding something like the follwoing lines before starting
the daemon:

echo MIN_FREQ > /sys/class/system/cpu/cpu0/cpufreq/scaling_min_freq
echo MAX_FREQ > /sys/class/system/cpu/cpu0/cpufreq/scaling_max_freq

or taylored a bit to support multiple CPU systems, but IIRC cpufreq does not
support SMP yet, so this sould be enough.
Comment 1 Matthew Miller 2006-07-10 18:54:09 EDT
Fedora Core 3 is now maintained by the Fedora Legacy project for security
updates only. If this problem is a security issue, please reopen and
reassign to the Fedora Legacy product. If it is not a security issue and
hasn't been resolved in the current FC5 updates or in the FC6 test
release, reopen and change the version to match.

Thank you!
Comment 2 Behdad Esfahbod 2006-07-10 19:02:57 EDT
Still relevant.
Comment 3 Jarod Wilson 2007-01-08 11:32:52 EST
Latest rawhide builds enable this functionality.

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