Public bug reported:
Binary package hint: cpufrequtils
When you enter a governor into /etc/defaults/cpufrequtils , this governor is
only applied to cpu 0, as indicated in the manpage of cpufrequtils ("Omitting
the -c or --cpu argument is equivalent to setting it to zero.").
This causes, especially in multicore-cpus, such as a core2duo, that no scaling
of the cpu frequency is done anyway.
A modified init-script fixes this issue by applying the supplied
parameters to ALL cpus, which fixes this issue. Please see attachment.
Please include in a future version of this package.
** Affects: cpufrequtils (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
Binary package hint: cpufrequtils
When you enter a governor into /etc/defaults/cpufrequtils , this governor is
only applied to cpu 0, as indicated in the manpage of cpufrequtils ("Omitting
the -c or --cpu argument is equivalent to setting it to zero.").
This causes, especially in multicore-cpus, such as a core2duo, that no
scaling of the cpu frequency is done anyway.
A modified init-script fixes this issue by applying the supplied
- parameters to ALL cpus, which fixes this issue.
-
- *snip*
- #!/bin/bash
- ### BEGIN INIT INFO
- # Required-Start: $local_fs
- # Required-Stop:
- # Default-Start: 2 3 4 5
- # Default-Stop: 0 1 6
- # Short-Description: set CPUFreq kernel parameters
- # Description: utilities to deal with CPUFreq Linux
- # kernel support
- ### END INIT INFO
- #
-
- DESC="CPUFreq Utilities"
-
- PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
- PROGRAM=/usr/bin/cpufreq-set
- CPUFREQ_OPTIONS=''
-
- # use lsb-base
- . /lib/lsb/init-functions
-
- [ -x $PROGRAM ] || exit 0
-
- if [ -f /etc/default/cpufrequtils ] ; then
- . /etc/default/cpufrequtils
- else
- ENABLE="false"
- fi
-
- # if not enabled then exit gracefully
- [ "$ENABLE" = "true" ] || exit 0
-
- if [ $MAX_SPEED -gt 0 ] ; then
- CPUFREQ_OPTIONS="$CPUFREQ_OPTIONS --max $MAX_SPEED"
- fi
-
- if [ $MIN_SPEED -gt 0 ] ; then
- CPUFREQ_OPTIONS="$CPUFREQ_OPTIONS --min $MIN_SPEED"
- fi
-
-
- case "$1" in
- start|force-reload|restart|reload)
- log_action_begin_msg "$DESC: Setting $GOVERNOR CPUFreq
governor"
-
- if [ -n $GOVERNOR ] ; then
-
- COUNTER=0
-
- while [ $COUNTER -lt `grep -c "^processor"
/proc/cpuinfo` ]; do
- $PROGRAM -c $COUNTER --governor $GOVERNOR
$CPUFREQ_OPTIONS 2>&1 > /dev/null
- let COUNTER=COUNTER+1
- done
-
- fi
-
- log_action_end_msg $?
- ;;
- stop)
- ;;
- *)
- echo "Usage: $0 {start|stop|restart|reload|force-reload}"
- exit 1
- esac
-
- exit 0
- *snap*
+ parameters to ALL cpus, which fixes this issue. Please see attachment.
Please include in a future version of this package.
--
cpufrequtils init script lacks multi-cpu support - fix included
https://bugs.launchpad.net/bugs/135155
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