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Michael Vasseurvmcj
Michael Vasseur
authored andcommittedOct 25, 2024
Convert script from tab to spaces
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‎provision-contest/disable-turboboost_ht

+46-46
Original file line numberDiff line numberDiff line change
@@ -7,57 +7,57 @@ declare -A core_ids
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# shellcheck disable=SC2012
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for cpu in $(ls -1d /sys/devices/system/cpu/cpu* | sort --version-sort) ; do
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[[ $(basename $cpu) =~ ^cpu[0-9]+$ ]] || continue
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# Reenable stuff in case we are rerunning this script.
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[ -f $cpu/online ] && echo 1 > $cpu/online
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if [ -f $cpu/cpufreq/scaling_governor ]; then
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chmod u+w $cpu/cpufreq/scaling_governor
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fi
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# Set governor to performance and do not allow changes later on.
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if [ -f $cpu/cpufreq/scaling_governor ]; then
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echo performance > $cpu/cpufreq/scaling_governor
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chmod a-w $cpu/cpufreq/scaling_governor
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fi
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# Disable all but one thread on each core. Both core_id and physical_package_id are
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# numbers it must be ensured that for the following examples are seen as distinct:
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# - core_id=1, physical_package=11
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# - core_id=11, physycal_package=1
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# Simple concatenation would result in the string '111' for both cores. Though `cat`
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# adds a newline after each file, we do not want to rely on `cat` to always add this
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# 'delimiter'.
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core_id=$(cat $cpu/topology/core_id | tr -d '\n')'-'$(cat $cpu/topology/physical_package_id | tr -d '\n')
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if [[ ${core_ids[$core_id]:-} ]]; then
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echo 0 > $cpu/online
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else
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core_ids[$core_id]=1
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fi
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[[ $(basename $cpu) =~ ^cpu[0-9]+$ ]] || continue
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# Reenable stuff in case we are rerunning this script.
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[ -f $cpu/online ] && echo 1 > $cpu/online
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if [ -f $cpu/cpufreq/scaling_governor ]; then
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chmod u+w $cpu/cpufreq/scaling_governor
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fi
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# Set governor to performance and do not allow changes later on.
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if [ -f $cpu/cpufreq/scaling_governor ]; then
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echo performance > $cpu/cpufreq/scaling_governor
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chmod a-w $cpu/cpufreq/scaling_governor
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fi
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# Disable all but one thread on each core. Both core_id and physical_package_id are
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# numbers it must be ensured that for the following examples are seen as distinct:
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# - core_id=1, physical_package=11
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# - core_id=11, physycal_package=1
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# Simple concatenation would result in the string '111' for both cores. Though `cat`
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# adds a newline after each file, we do not want to rely on `cat` to always add this
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# 'delimiter'.
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core_id=$(cat $cpu/topology/core_id | tr -d '\n')'-'$(cat $cpu/topology/physical_package_id | tr -d '\n')
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if [[ ${core_ids[$core_id]:-} ]]; then
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echo 0 > $cpu/online
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else
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core_ids[$core_id]=1
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fi
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done
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DIR_INTEL=/sys/devices/system/cpu/intel_pstate
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DIR_AMD=/sys/devices/system/cpu/cpufreq
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if [ -d $DIR_INTEL ]; then
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# now disable turbo boost
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FILE=$DIR_INTEL/no_turbo
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echo -n 1 > $FILE || echo "Could not write to '$FILE', ignoring for now..."
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if [ $(cat $FILE) -ne 1 ]; then
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echo "Error: turboboost still enabled!"
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exit 1
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fi
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# increase freq from powersaving to normal, but don't overclock
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echo 100 > $DIR_INTEL/min_perf_pct
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echo 100 > $DIR_INTEL/max_perf_pct
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# now disable turbo boost
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FILE=$DIR_INTEL/no_turbo
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echo -n 1 > $FILE || echo "Could not write to '$FILE', ignoring for now..."
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if [ $(cat $FILE) -ne 1 ]; then
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echo "Error: turboboost still enabled!"
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exit 1
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fi
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# increase freq from powersaving to normal, but don't overclock
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echo 100 > $DIR_INTEL/min_perf_pct
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echo 100 > $DIR_INTEL/max_perf_pct
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elif [ -d $DIR_AMD ]; then
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# now disable boosting
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FILE=$DIR_AMD/boost
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echo -n 0 > $FILE || echo "Could not write to '$FILE', ignoring for now..."
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if [ $(cat $FILE) -ne 0 ]; then
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echo "Error: turboboost still enabled!"
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exit 1
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fi
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# now disable boosting
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FILE=$DIR_AMD/boost
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echo -n 0 > $FILE || echo "Could not write to '$FILE', ignoring for now..."
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if [ $(cat $FILE) -ne 0 ]; then
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echo "Error: turboboost still enabled!"
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exit 1
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fi
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else
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echo "Warning: kernel (turbo) boost config not found in '$DIR_INTEL' or '$DIR_AMD'."
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echo "Warning: kernel (turbo) boost config not found in '$DIR_INTEL' or '$DIR_AMD'."
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fi

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